Page 2 Yealink and/or its respective suppliers are not responsible for the suitability of the information contained in this document for any reason. The information is provided “as is”, and Yealink does not provide any warranty and is subject to change without notice. All risks other than risks caused by use of the...
Page 3: End User License Agreement
The EULA for this product is available on the Yealink Support page for the product.
Page 4: Gnu Gpl Information
GNU GPL INFORMATION Yealink SIP-T48G IP phone firmware contains third-party software under the GNU General Public License (GPL). Yealink uses software under the specific terms of the GPL. Please refer to the GPL for the exact terms and conditions of the license.
Page 5: About This Guide
This guide provides everything you need to quickly use your new phone. First, verify with your system administrator that the IP network is ready for phone configuration. Also be sure to read the Packaging Contents in this guide before you set up and use the SIP-T48G IP phone. Yealink Products Regulatory Notices guide See the for all regulatory and safety guidance.
Page 6: Changes For Release 81, Guide Version 81.90
User Guide for the SIP-T48G IP Phone Changes for Release 81, Guide Version 81.70 Major updates have occurred to the following sections: Entering Data and Editing Fields on page  Configuring an Access URL on page  DSS Keys on page ...
Page 7 About This Guide Call Transfer on page  Call Park on page  Busy Lamp Field (BLF) on page  Intercom on page  Call Recording on page  Multicast Paging on page  Major updates have occurred to the following sections: Icon Instructions on page ...
Page 8 User Guide for the SIP-T48G IP Phone The following section is new: Phone Lock on page  Emergency Number on page  Short Message Service (SMS) on page  Major updates have occurred to the following sections: Icon Instructions on page ...
Page 9 About This Guide Major updates have occurred to the following sections: Documentations on page  Packaging Contents on page  Phone Installation on page  Contact Management on page  Placing Calls on page ...
Page 10 User Guide for the SIP-T48G IP Phone...
Page 11: Table Of Contents
Table of Contents Table of Contents About This Guide ................v In This Guide ................................v Summary of Changes ............................. v Changes for Release 81, Guide Version 81.90 ..................v Changes for Release 81, Guide Version 81.70 ..................vi Changes for Release 81, Guide Version 81.20 ..................vi Changes for Release 81, Guide Version 81.10 ..................
Page 12 User Guide for the SIP-T48G IP Phone Phone Initialization ............................... 22 Phone Status ................................23 Basic Network Settings ............................24 Wireless Network Settings ..........................26 Activating the Wi-Fi Mode ..........................27 Connecting to the Wireless Network ......................27 Viewing the Wireless Network Information ................... 31 Managing the Saved Wireless Network ....................
Page 13: Table Of Contents
Table of Contents Search Source List in Dialing ..........................96 System Customizations............................98 Headset Use ................................ 98 Bluetooth................................100 DSS Keys ................................108 Account Management ..........................120 Dial Plan ................................123 Emergency Number ............................129 Live Dialpad ............................... 130 Hotline ................................. 130 Basic Call Features ..............
Page 14 User Guide for the SIP-T48G IP Phone Anonymous Call Rejection ..........................181 Advanced Phone Features ............183 Busy Lamp Field (BLF) ............................183 Configuring the BLF Feature on the IP Phone ..................183 Using BLF Feature on the IP Phone ......................188 BLF List ..................................
Page 15: Overview
 User Interfaces  Documentations  If you require additional information or assistance with your new phone, contact your system administrator. Hardware Component Instructions The main hardware components of the SIP-T48G IP phone are the touch screen and the keypad.
Page 16 User Guide for the SIP-T48G IP Phone Hardware component instructions of the SIP-T48G IP phone are: Item Description Indicates call status, message status and phone’s system status. ① Power Indicator LED • Receives an incoming call—Fast-flashing • Receives a voice mail or text message—Slow-flashing The screen is touch-sensitive.
Page 17: Icon Instructions
Overview Item Description Installation Guide for Yealink IP Phones • Picking up the handset from the handset cradle, the hookswitch bounces and the phone connects to the line. ⑮ Hookswitch • Laying the handset down on the handset cradle, the phone disconnects from the line.
Page 18: Line Key Icons
User Guide for the SIP-T48G IP Phone Icons Description Recording is paused (Using a USB flash drive) Bluetooth mode is on Bluetooth headset is both paired and connected Bluetooth-Enabled mobile phone is both paired and connected Wi-Fi connection is successful...
Page 19 Overview Icons Description Forward Transfer ReCall Record URL Record Recording starts successfully (Record/URL Record) Multicast Paging Group Listening Paging List Hot Desking Zero Touch Phone Lock Directory Speed Dial Icon indicator (associated with line) Icons Description The private line registers successfully The shared/bridged line registers successfully Register failed Registering...
Page 20 User Guide for the SIP-T48G IP Phone Icon indicator (associated with call park/retrieve park) Icons Description Call Park (Park successfully; Call park idle state) Call Park (Park failed) Call Park (Call park ringing state) Retrieve Park Icon indicator (associated with BLF/BLF List)
Page 21 Overview Icons Description Intercom talking state Talking Intercom failed state Icon indicator (associated with ACD) Icon Description Log in the ACD system The ACD status is available The ACD state is Wrap up The ACD status is unavailable Log out of the ACD system Icon indicator (associated with a shared line) The local SCA phone indicates the phone is involved in an SCA call, while the monitoring SCA phone indicates the phone is not involved in the SCA call.
Page 22 User Guide for the SIP-T48G IP Phone Icon Description (for local SCA phone) (for monitoring SCA phone) The shared line conversation is barged in by the other shared line party. For a multi-party call, all the shared line parties participating in this call place the shared line conversation on hold.
Page 23: Other Icons
Overview Other Icons Icons appearing when accessing features are described in the following tables: Icon indicator (associated with call recording) Icon Description Recording box is full (Using a record key) A call cannot be recorded (Using a record key) Recording starts successfully (Using a record key) Recording cannot be started (Using a record key)
Page 24: User Interfaces
The above introduces the default LED status. The status of the power indicator LED is configurable via web user interface. For more information, contact your system administrator. User Interfaces Two ways to customize configurations of your SIP-T48G IP phone: The user interface on the IP phone. ...
Page 25 Overview bar of a web browser on your PC. The default administrator user name and password are both “admin” (case-sensitive). The access to the Advanced settings of the Account or Network via web user interface may be Note blocked by the web browser (e.g., Chrome, Firebox) if you have installed “Adblock Plus plugin”. The main options you can use to customize the IP phone via phone user interface and/or via web user interface are listed in the following table: Options...
Page 26 User Guide for the SIP-T48G IP Phone Options Phone User Interface Web User Interface --Bluetooth √ √ --DSS Keys √ --Account Registration √ --Dial Plan × --Emergency Number × --Live Dialpad × --Hotline √ Basic Call Features --Recent Call In Dialing ×...
Page 27: Documentations
√ Note The table above lists most of the feature options. Please refer to the relevant sections for more information. Documentations The following table shows documentations available for the SIP-T48G IP phone. Name Contents Where found Language Basic call features...
Page 28 User Guide for the SIP-T48G IP Phone...
Page 29: Getting Started
Navigating Menus and Fields  Entering Data and Editing Fields  If you require additional information or assistance with your new phone, contact your system administrator. Packaging Contents The following components are included in your SIP-T48G IP phone package: SIP-T48G IP Phone ...
Page 30: Optional Accessories
 Quick Start Guide  Check the list before installation. If you find anything missing, contact your system administrator. Optional Accessories The following items are optional accessories for your SIP-T48G IP phone. You need to purchase them separately if required.
Page 31 Getting Started Wall Mount Bracket  Power Adapter (5.5mm DC plug)  Headset YHS32/YHS33  Wireless Headset Adapter EHS36  Bluetooth USB Dongle BT40 ...
Page 32: Phone Installation
User Guide for the SIP-T48G IP Phone Wi-Fi USB Dongle WF40  We recommend that you use the accessories provided or approved by Yealink. The use of Note unapproved third-party accessories may result in reduced performance. Phone Installation If your phone is already installed, proceed to Phone Initialization on page 22.
Page 33 The top two slots are plugged up by silica gel. You need to pull out silica gel before attaching the wall mount bracket. For more information on how to attach the wall mount bracket, refer to Yealink Wall Mount Quick Installation Guide for Yealink IP Phones Connect the handset and optional headset Note The EXT port can also be used to connect an expansion module EXP40.
Page 34 Connect the DC plug on the power adapter to the DC5V port on the phone and connect the other end of the power adapter into an electrical power outlet. Note The IP phone should be used with Yealink original power adapter (5V/2A) only. The use of the third-party power adapter may cause the damage to the phone.
Page 35: Power Over Ethernet
Getting Started Power over Ethernet With the included or a regular Ethernet cable, the SIP-T48G IP phone can be powered from a PoE-compliant switch or hub. To connect the PoE: Connect the Ethernet cable between the Internet port on the phone and an available port on the in-line power switch/hub.
Page 36: Connecting To The Wired Network
Connecting to the Wireless Network Yealink SIP-T48G IP phone supports Wi-Fi feature. You can connect your phone to a wireless network. The wireless network is more convenient and cost-effective than wired network. The PC port is unavailable when using wireless network. For more information on how to connect to a...
Page 37: Phone Status
Getting Started DHCP (Dynamic Host Configuration Protocol) The phone attempts to contact a DHCP server in your network to obtain valid IPv4 network settings (e.g., IP address, subnet mask, default gateway address and DNS address) by default. Note If your network does not use DHCP, proceed to Basic Network Settings on page 24.
Page 38: Basic Network Settings
User Guide for the SIP-T48G IP Phone Enter the user name (admin) and password (admin) in the login page. Click Login to login. The phone status is displayed on the first page of the web user interface. If IP mode of the phone is configured as IPv4 & IPv6, you can enter either of them in the Note browser’s address bar to view the phone status.
Page 39 Getting Started To configure the IP mode via phone user interface: ->Advanced (default password: admin) ->Network->WAN Port. Tap the gray box of the IP Mode field, and then select the desired value (IPv4, IPv6 or IPv4 & IPv6) from the pull-down list. Tap the Save soft key to accept the change or to cancel.
Page 40: Wireless Network Settings
User Guide for the SIP-T48G IP Phone To configure a static IPv6 address via phone user interface: ->Advanced (default password: admin) ->Network->WAN Port->IPv6. Tap the gray box of the Type field, and then select Static IP from the pull-down list.
Page 41: Activating The Wi-Fi Mode
Getting Started Activating the Wi-Fi Mode When Wi-Fi USB dongle WF40 is connected to the USB port at the back of the IP phone, the screen will prompt “Wi-Fi adapter is added, scanning available wireless networks right now?”. You can tap OK to activate Wi-Fi mode directly and scan Wi-Fi devices automatically. To activate the Wi-Fi mode via phone user interface: ->Basic->Wi-Fi.
Page 42 User Guide for the SIP-T48G IP Phone Manually Connect to an Available Wireless Network To manually connect to a wireless network via phone user interface: ->Basic->Wi-Fi. Tap the On radio box of the Wi-Fi field. The IP phone scans the available wireless networks in your area.
Page 43 WPS can automatically configure a wireless network with a network name (SSID) and strong WPA data encryption and authentication. Two methods supported by Yealink IP phones in the Wi-Fi protected setup: Push Button Configuration (PBC): The user simply has to press WPS key on both the IP ...
Page 44 User Guide for the SIP-T48G IP Phone Push Button Configuration (PBC) To connect to the wireless network using PBC method: ->Basic->Wi-Fi. Tap the On radio box of the Wi-Fi field. The IP phone scans the available wireless networks in your area.
Page 45: Viewing The Wireless Network Information
Getting Started on the IP phone. Do the following: If you select None or WEP from the pull-down list of Security Mode: Enter the profile name, SSID and WPA shared key in the corresponding fields. If you select WPA-PSK or WPA2-PSK from the pull-down list of Security Mode: Select the desired Cipher type (TKIP, AES or TKIP AES) from the pull-down list of Cipher Type.
Page 46: Managing The Saved Wireless Network
User Guide for the SIP-T48G IP Phone If the IP phone is connected to a wireless network successfully, you can also tap Wi-Fi Status to view the connected wireless network information. Managing the Saved Wireless Network Once the IP phone has ever been connected to a wireless network successfully, the wireless network profile will be saved in Known Network(s) list.
Page 47: Disconnecting The Wireless Network Connection
Getting Started Do one of the following: To edit the wireless network profile: Tap Edit. Edit the desired wireless network information. Tap the Save soft key. To change the priority of the wireless network: Tap Move Up or Move Down to improve or lower the priority of the wireless network that the IP phone automatically connects to.
Page 48: Deactivating The Wi-Fi Mode
The SIP-T48G IP phone supports up to 16 accounts. If your phone is not registered, you may have to register it. For more information on...
Page 49: Touch Screen Display
Getting Started Touch Screen Display Idle Screen Display If the phone has successfully started up, the idle screen will be displayed. The following figure is an example of what is displayed on the touch screen. Name Description Displays the phone’s default account, icons and the Status Bar time and date.
Page 50 User Guide for the SIP-T48G IP Phone Name Description status of the assigned feature. For more information, refer to Line Keys on page 109. Tap to unfold the DSS key list. You can tap or long tap the desired line key to configure it.
Page 51: Navigating Menus And Fields
Getting Started Name Description corresponding feature configuration screen. Displays configuration items of the highlighted Configuration Area menu item in the menu tree area. You can configure feature settings in this area. Label automatically to identify their Soft Keys context-sensitive features. Navigating Menus and Fields To navigate menus and fields, you can: Tap soft keys on the touch screen.
Page 52: Entering Data And Editing Fields
User Guide for the SIP-T48G IP Phone Entering Data and Editing Fields You can enter data and edit fields using the phone keypad. Keypad on the phone provides different characters (or numbers) when using the 2aB, abc, Abc, ABC or 123 input mode. You can change the following input modes to enter data and edit fields on your phone.
Page 53 Getting Started Input Mode Keypad (initials in capitals) To enter or edit data: Tap the field. Do one of the following: If you want to Then you can Press a keypad key one or more times (depending on what input mode you’re in) to enter the characters that is displayed on the keypad key.
Page 54 User Guide for the SIP-T48G IP Phone If you want to Then you can key: It only provides the pound character #. key: If it is in the uppercase (ABC), lowercase (abc), uppercase and lowercase (Abc) or alphanumeric (2aB) input mode, it will provide the following special characters: *.,'?!\-()@/:_;+&%=<>￡$¥...
Page 55: Customizing Your Phone
General Settings Wallpaper You can customize the wallpaper of the SIP-T48G IP phone, and can change the wallpaper image via phone user interface or web user interface. You can also upload custom pictures as wallpaper images via web user interface.
Page 56 Wallpaper or Wallpaper with DSSkey unfold field. Note The SIP-T48G IP phone screen size is 7 inches (Resolution: 800x480). If the size of the custom wallpaper doesn’t meet the IP phone screen size, the wallpaper will be stretched or/and zoomed out according to the IP phone screen size.
Page 57 Customizing Your Phone , or press to select the desired wallpaper image. Tap the Save soft key to accept the change or to cancel. Wallpaper on the idle screen is configurable via web user interface at the path Settings->Preference->Wallpaper. Wallpaper with Dsskey Unfold You can change the wallpaper to display when unfolding the DSS key list.
Page 58: Transparency
User Guide for the SIP-T48G IP Phone To change the DSS key wallpaper via phone user interface: ->Basic->Display->Dsskey Wallpaper. , or press to select the desired wallpaper image. Tap the Save soft key to accept the change or to cancel.
Page 59: Screen Saver
Customizing Your Phone To change the transparency via phone user interface: ->Basic->Display->Transparency. Tap the gray box of the Transparency field, and then select the desired value from the pull-down list. Tap the Save soft key to accept the change or to cancel.
Page 60 3. You can configure the phone whether to display the time & date on the screen saver or not. You can configure the screen saver of SIP-T48G IP phone, and upload custom pictures to set up a screen saver of your picture via web user interface. You can configure the screen saver wait time, screen saver type and screen saver display clock via phone user interface or web user interface.
Page 61: Configuring The Screen Saver
Customizing Your Phone This field appears only if Screensaver Type is set to Custom. The custom picture appears in Screensaver list. You can only delete the custom picture by clicking Del in the Screensaver field. Note You can only upload one custom image at a time via web user interface. Configuring the Screen Saver To configure the screen saver via phone user interface ->Basic->Display->Screensaver.
Page 62: Power Saving
User Guide for the SIP-T48G IP Phone The IP phone will automatically set the custom pictures you upload as the screen saver, and display these pictures alternately. Tap the Save soft key to accept the change or to cancel. Screen saver is configurable via web user interface at the path Settings->Preference.
Page 63 Customizing Your Phone Enabling the Power Saving To enable the power saving feature via web user interface: Click on Settings->Power Saving. Select Enabled from the pull-down list of Power Saving. Click Confirm to accept the change. Configuring the Office Hour Office Hour specifies the starting time and ending time in the office each day.
Page 64 User Guide for the SIP-T48G IP Phone Enter the starting time and ending time respectively in the desired day field. Click Confirm to accept the change. Configuring the Idle Timeout Idle Timeout specifies the period of time before the IP phone enters power-saving mode. The following three types of idle timeout you can configure: Office Hours Idle TimeOut: Configures the idle timeout for office hours.
Page 65: Backlight
15s, 30s, 1min, 2min, 5min, 10min or 30min: Backlight is changed when the phone is  inactive after the designated time (in seconds). You can also change the intensity of the LCD screen of EXP40 connected to the SIP-T48G IP phone. To configure the backlight via phone user interface: ->Basic->Display->Backlight.
Page 66: Contrast
Backlight is configurable via web user interface at the path Settings->Preference. Contrast You can only configure the contrast of the expansion module EXP40 connected to the SIP-T48G IP phone to a comfortable level on the phone. Ensure that the expansion module has been connected to the phone before configuration.
Page 67: Language
Customizing Your Phone The default contrast level is “6”. Tap the Save soft key to accept the change or to cancel. Language The default language of the phone user interface is English. If the language of your web browser is not supported by the phone, the web user interface will use English by default. You can change the language for the phone user interface and the web user interface respectively.
Page 68: Time & Date
User Guide for the SIP-T48G IP Phone To change the language for the web user interface: Select the desired language from the pull-down list at the top-right corner of web user interface. Text displayed on the web user interface will change to the selected language.
Page 69 Customizing Your Phone This field appears only if Daylight Saving field is selected Automatic, and the default time zone name is “China(Beijing)”. Tap the Save soft key to accept the change or to cancel. Note Please refer to Appendix A – Time Zones on page for the list of available time zones on the IP phone.
Page 70 User Guide for the SIP-T48G IP Phone To configure the date and time format via phone user interface: ->Basic->Time & Date->Time & Date Format. Tap the gray box of the Date Format field, and then select the desired date format from the pull-down list.
Page 71: Administrator Password
Customizing Your Phone Administrator Password The Advanced option is only accessible to the administrator. The default administrator password is “admin”. For security reasons, you should change the default administrator password as soon as possible. To change the administrator password via phone user interface: ->Advanced (default password: admin) ->Change Password.
Page 72: Phone Lock
User Guide for the SIP-T48G IP Phone Tap the gray box of the Key As Send field, and then select # or * from the pull-down list, or select Disabled to disable this feature. Tap the Save soft key to accept the change or to cancel.
Page 73 Customizing Your Phone If it is set to other values except 0 (e.g., 5), the phone will be locked when the phone is inactive in idle screen for the designated time (in seconds). Tap the Save soft key to accept the change. When the phone is locked, the touch screen prompts “Phone locked.”...
Page 74 User Guide for the SIP-T48G IP Phone Enter the desired value in the Old PIN, New PIN and Confirm PIN field respectively. Tap the Save soft key to accept the change or to cancel. Note The unlock PIN length must be within 15 digits.
Page 75: Audio Settings
Customizing Your Phone To deactivate the phone lock via phone user interface: ->Basic->Phone Lock. Enter the desired PIN (default PIN: 123) in the Unlock PIN field, and then tap the Save soft key or press OK. Tap the gray box of the Lock Enable field, and then select Disabled from the pull-down list. Tap the Save soft key to accept the change.
Page 76 User Guide for the SIP-T48G IP Phone To adjust the ringer volume when the phone is idle: Press to adjust the ringer volume. To adjust the ringer volume when the phone is ringing: Press to adjust the ringer volume. You can also press to adjust the ringer volume when selecting a ring tone.
Page 77: Ring Tones
Customizing Your Phone To adjust the volume when the phone is during a call: Press to adjust the volume of currently engaged audio device (handset, speakerphone or headset). You can also press to adjust the volume when playing back the recording calls. For Note more information, refer to Playing Back Recorded Calls...
Page 78 User Guide for the SIP-T48G IP Phone Tap the desired ring tone. (Optional.) Press to adjust the ringer volume. Tap the Save soft key to accept the change or to cancel. A ring tone for the phone is configurable via web user interface at the path Settings->Preference->Ring Type.
Page 79: Key Tone
Customizing Your Phone To upload a custom ring tone for your phone via web user interface: Click on Settings->Preference. In the Upload Ringtone field, click Browse to locate a ring tone file (the file format must be *.wav) from your local system. Click Upload to upload the file.
Page 80: Contact Management
User Guide for the SIP-T48G IP Phone Tap the On or Off radio box of the Key Tone field. Tap the Save soft key to accept the change or to cancel. Key tone is configurable via web user interface at the path Features->Audio.
Page 81 Customizing Your Phone To remove a list from the Enabled column, select the desired list and then click To adjust the display order of the enabled lists, select the desired list and then click Click Confirm to accept the change. Note The list(s) to access for the Directory soft key is configurable via web user interface only.
Page 82: Local Directory
User Guide for the SIP-T48G IP Phone If more than one list is enabled for the directory, tap the desired list you want to view, and then tap OK. If the remote phone book and LDAP are not configured in advance, you cannot view remote Note phone book and LDAP lists on the phone user interface.
Page 83: Adding Groups
Customizing Your Phone Adding Groups To add a group to the local directory: The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default. If Local Directory is removed from the directory (refer to Directory on page 66), tap ->Directory->All Contacts to enter the local directory.
Page 84: Editing Groups
User Guide for the SIP-T48G IP Phone to scroll through the list of available ring tones. Tap the desired ring tone. If Auto is selected, this group will use the ring tone according to the priority: Contact ring tone (refer to Adding Contacts) >Account ring tone (refer to...
Page 85 Customizing Your Phone Tap the desired group. after the group name. Edit the group name in the highlighted field. to accept the change. Deleting Groups To delete a group from the local directory: The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default.
Page 86: Adding Contacts
User Guide for the SIP-T48G IP Phone The touch screen prompts the following warning: Tap OK to confirm the deletion or Cancel to cancel. Adding Contacts You can add contacts to the local directory in one of the following ways: Manually ...
Page 87 Customizing Your Phone If Local Directory is removed from the directory (refer to Directory on page 66), tap ->Directory->All Contacts to enter the local directory. Tap Add. If you want add a contact to the specified contact group, you can tap the contact group first, and then tap Add.
Page 88 User Guide for the SIP-T48G IP Phone after the desired entry. Tap Add. Edit the corresponding fields. Tap the Save soft key to accept the change. The entry is successfully saved to the local directory.
Page 89 Customizing Your Phone Adding Contacts from Remote Phone Book To add a contact to the local directory from a remote phone book: ->Directory->Remote Phone Book. If Remote Phone Book is added to the directory (refer to Directory on page 66), tap ->Remote Phone Book to enter the remote phone book.
Page 90: Editing Contacts
User Guide for the SIP-T48G IP Phone Edit the corresponding fields. Tap the Save soft key to save the contact to the local directory. If the contact already exists in the local directory, the touch screen will prompt “Overwrite the original contact?”. Tap OK to overwrite the original contact in the local directory or Cancel to cancel.
Page 91: Deleting Contacts
Customizing Your Phone If the contact was added to a specified contact group, you can tap the contact group first, and then tap after the desired contact. Tap the desired field to edit the contact information. You can tap to switch the contact you want to edit. Tap the Save soft key to accept the change or to cancel.
Page 92 User Guide for the SIP-T48G IP Phone Tap Delete. The touch screen prompts the following warning: Tap OK to confirm the deletion or Cancel to cancel. To delete all contacts: The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default.
Page 93 Customizing Your Phone The touch screen prompts the following warning: Tap OK to confirm the deletion or Cancel to cancel. Uploading Contact Photos To upload a new custom photo for a contact via web user interface: Click on Directory->Local Directory. Click Browse, and then locate a photo file from your local computer.
Page 94 User Guide for the SIP-T48G IP Phone You can click Delete Photo to delete the custom photo. The phone only supports *.png, *.jpg, *.jpeg and .bmp format files. Note You can only delete custom photos. To change the custom photo for the contact via web user interface: Click on Directory->Local Directory.
Page 95: Placing Calls To Contacts
Customizing Your Phone When you place a call to the contact or receive a call from the contact, the touch screen will display the contact photo. Placing Calls to Contacts To place a call to a contact from the local directory: The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default.
Page 96: Searching For Contacts
User Guide for the SIP-T48G IP Phone If multiple numbers for the contact are stored in the local directory, the touch screen will prompt: Tap the desired number. The selected number will be dialed out. Searching for Contacts To search for a contact in the local directory: The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default.
Page 97 Customizing Your Phone Enter a few continuous characters of the contact name or continuous numbers of the contact number (office, mobile or other number) using the keypad. The contacts whose name or phone number matches the characters entered will appear on the touch screen.
Page 98 User Guide for the SIP-T48G IP Phone Click Import XML to import the contact list. The web user interface prompts "The original contact will be covered, continue?". Click OK to complete importing the contact list. To import a CSV contact list file via web user interface: Click on Directory->Local Directory.
Page 99 Customizing Your Phone It will prevent importing the title of the contact information which is located in the first line of the CSV file. Click Import CSV to import the contact list. (Optional.) Mark the On radio box in the Del Old contact field. It will delete all existing contacts while importing the contact list.
Page 100: Blacklist
User Guide for the SIP-T48G IP Phone To export a contact list via web user interface: Click on Directory->Local Directory. Click Export XML (or Export CSV). Click Save to save the contact list to your local system. Note Importing/exporting contact lists is available via web user interface only.
Page 101 Customizing Your Phone To add a contact to the blacklist directory from the local directory: The IP phone enters the local directory directly as there is only Local Directory enabled in the directory by default. If Local Directory is removed from the directory (refer to Directory on page 66), tap ->Directory->All Contacts to enter the local directory.
Page 102: Mobile Contacts
User Guide for the SIP-T48G IP Phone Mobile Contacts You can sync mobile phone contacts temporarily when pairing and connecting your IP phone to your Bluetooth-enabled mobile phone. The mobile phone contacts will be imported to the mobile contacts directory on your IP phone. You can add a contact to the local directory or blacklist directory from mobile contacts.
Page 103 Customizing Your Phone Edit the corresponding fields. Tap the Save soft key to accept the change. The entry is successfully saved to the blacklist directory. For operating instructions on placing calls to and/or searching for contacts in the mobile contacts directory, refer to the operating instructions of Placing Calls to Contacts on page and/or...
Page 104: Remote Phone Book
User Guide for the SIP-T48G IP Phone After updating, the contacts you add, edit, delete on the mobile phone will sync to the mobile contacts directory. If you disconnect the mobile phone from IP phone when the IP phone is updating the mobile Note phone book, the touch screen will prompt “Fail to download mobile contacts!”, and the mobile...
Page 105 Customizing Your Phone Accessing the Remote Phone Book To access your remote phone book via phone user interface: ->Directory->Remote Phone Book. If Remote Phone Book is added to the directory (refer to Directory on page 66), tap ->Remote Phone Book to enter the remote phone book. Tap the desired remote phone book.
Page 106: Call History Management
User Guide for the SIP-T48G IP Phone Call History Management The SIP-T48G IP phone maintains call history lists of Missed Calls, Placed Calls, Received Calls and Forwarded Calls. Each call history list supports up to 100 entries. You can view call history, place a call, add a contact or delete an entry from the call history list.
Page 107: Adding A Contact To The Local Directory/Blacklist
Customizing Your Phone You can tap Missed Calls, Placed Calls, Received Calls or Forwarded Calls to view entries in each call list directly. Tap the desired entry. Adding a Contact to the Local Directory/Blacklist To add a contact to the local directory (or blacklist directory) from the call history list: The touch screen displays all call records.
Page 108: Deleting History Records
User Guide for the SIP-T48G IP Phone Tap the Save soft key. For more information on local directory and/or blacklist, refer to Local Directory on page and/or Blacklist on page 86. Deleting History Records To delete an entry from the call history list: The touch screen displays all call records.
Page 109: Disabling History Record
Customizing Your Phone Tap the checkbox of Select All. Tap Delete. The touch screen prompts “Delete all the call records?”. Tap OK to confirm the deletion or Cancel to cancel. Disabling History Record To disable history record via phone user interface: ->Features->General.
Page 110: Search Source List In Dialing
User Guide for the SIP-T48G IP Phone Tap the Off radio box of the History Record field. Tap the Save soft key to accept the change or to cancel. Search Source List in Dialing You can search for a contact from the desired lists when the phone is on the dialing screen. The lists can be Local Directory, History, Remote Phone Book and LDAP.
Page 111 Customizing Your Phone To adjust the display order of the enabled list, select the desired list, and click Click Confirm to accept the change. The touch screen will display search results in the adjusted order. Note Search source list in dialing is configurable via web user interface only. To search for an entry in the enabled search source lists: Pick up the handset, press the Speakerphone key or tap the line key.
Page 112: System Customizations
User Guide for the SIP-T48G IP Phone System Customizations Headset Use If you want to use a wired headset, physically connect your headset to the phone and activate the headset mode for use. For more information on physically connecting a headset, refer to Phone Installation on page 18.
Page 113: Dual Headset
Customizing Your Phone To enable headset prior via web user interface: Click on Features->General Information. Select Enabled from the pull-down list of Headset Prior. Click Confirm to accept the change. To use headset prior, you should activate the headset mode in advance: Physically connect the headset.
Page 114: Bluetooth
Dual headset is configurable via web user interface only. Bluetooth The SIP-T48G IP phone supports Bluetooth. Bluetooth enables low-bandwidth wireless connections within a range of 10 meters (32 feet). The best performance is in the 1 to 2 meters (3 to 6 feet) range.
Page 115 Customizing Your Phone Deactivate the Bluetooth mode from the IP phone.  Connect another Bluetooth device to the IP phone.  Deactivate the Bluetooth mode from Bluetooth device.  The distance between Bluetooth device and IP phone is out of the range of 10 meters. ...
Page 116 User Guide for the SIP-T48G IP Phone Pairing and Connecting the Bluetooth Headset Before you pair a Bluetooth headset, check the indicator on the Bluetooth headset to make sure that the Bluetooth headset is discoverable. For more information, refer to the documentation from the Bluetooth headset manufacturer.
Page 117 Customizing Your Phone Pairing and Connecting the Bluetooth-Enabled Mobile Phone Before you pair a Bluetooth-Enabled mobile phone, check the Bluetooth mode on the Bluetooth-Enabled mobile phone to make sure that the Bluetooth-Enabled mobile phone is discoverable. To pair and connect the Bluetooth-Enabled mobile phone with your phone: ->Basic->Bluetooth.
Page 118 User Guide for the SIP-T48G IP Phone Syncing the Mobile Contacts to the IP Phone on page 104. If you enable mobile contacts sync feature, you also need to authorize the IP phone to sync the contacts temporarily on the mobile phone.
Page 119 Customizing Your Phone first, and then the mobile contacts directory will appear in the IP phone directory list. To view your mobile contacts on the IP phone: ->Directory->Mobile Contacts. The contacts in the mobile phone will display in the Mobile Contacts list. For operating instructions on adding contact to local/blacklist directory from mobile contacts directory, update the mobile contacts directory or placing calls to and searching for contacts in the mobile contacts directory, refer to the operating instructions of...
Page 120 User Guide for the SIP-T48G IP Phone Connection: the connection status of Bluetooth headset with your phone.  Editing Device Information To edit device information via phone user interface: ->Basic->Bluetooth. Tap the Edit My Device Information field. The touch screen displays the device name and MAC address. The MAC address cannot be edited.
Page 121 Customizing Your Phone Disconnecting the Bluetooth Device You can disconnect the Bluetooth device from your phone. After you disconnect the Bluetooth device, it will still remain paired and be displayed in the Bluetooth Device(s) list. So you can easily connect it to your IP phone again. To disconnect your Bluetooth headset from your phone: ->Basic->Bluetooth.
Page 122: Dss Keys
User Guide for the SIP-T48G IP Phone The touch screen prompts the following warning “Delete selected item?”. Tap OK to confirm the deletion or Cancel to cancel. You can also delete all devices by tapping the Delete All soft key.
Page 123: Line Keys
Customizing Your Phone introduced in the following. The SIP-T48G IP phone supports 29 line keys and 13 programable keys. Line Keys You can assign predefined functionalities to line keys. You can also define a label for a line key feature which will appear on the touch screen. Line keys allow you to quickly access features such as recall and voice mail.
Page 124 User Guide for the SIP-T48G IP Phone The following figure shows an example of label display when the label length feature is set to Extended: The following figure shows an example of label display when the label length feature is set to...
Page 125 Customizing Your Phone To configure the label length via web user interface: Click on Dsskey->Line Key. Select the desired value from the pull-down list of Label Length. Click Confirm to accept the change. Note Label length feature is configurable via web user interface only. Line Key Features Line key features are explained in the following subchapters in detail: Line...
Page 126 User Guide for the SIP-T48G IP Phone Transfer  Hold   Group Listening  Zero Touch   Phone Lock  Directory  For the features not listed above, refer to Basic Call Features on page Advanced Phone Features on page 183.
Page 127 Customizing Your Phone Type (Key Event) Dependencies: Key Type (Voice Mail) Account ID (the account this feature will be applied to) Label (key label displayed on the touch screen) Value (the voice mail access code) Usage: Tap the Voice Mail key to dial out the voice mail access code. Then follow the voice prompt to listen to the voice mails.
Page 128 User Guide for the SIP-T48G IP Phone Prefix You can use this key feature to add a specified prefix number before the dialing number. Type (Key Event) Dependencies: Key Type (Prefix) Label (key label displayed on the touch screen) Value (the prefix number) Usage: Tap the Prefix key when the phone is idle, the phone will then enter the dialing screen and display the prefix number that you specified in the Value field.
Page 129 Customizing Your Phone LDAP You can use this key feature to quickly access a LDAP search screen. Type (Key Event) Dependencies: Key Type (LDAP) Label (key label displayed on the touch screen) Usage: Tap the LDAP key to access the LDAP search screen. Enter a few continuous characters of the contact name or continuous numbers of the contact number using the keypad.
Page 130 User Guide for the SIP-T48G IP Phone Key Type (Forward) Label (key label displayed on the touch screen) Value (the number you want to forward to) Usage: Tap the Forward key to forward an incoming call to the number specified in the Value field.
Page 131 Customizing Your Phone You can use this key feature to activate or deactivate DND. You can also use this key feature to access the custom DND screen. For more information, refer to Do Not Disturb (DND) on page 148. Type (Key Event) Dependencies: Key Type (DND) Label (key label displayed on the touch screen)
Page 132 User Guide for the SIP-T48G IP Phone Tap the Next soft key. Configure the auto provision parameters in the corresponding fields. Tap the Next soft key. The phone will reboot to update configurations. You can use this key feature to trigger the phone to send an HTTP GET request containing a specific URL.
Page 133 Customizing Your Phone Customize specific features for these keys. (Optional.) Enter the string that will appear on the touch screen in the Label field. Label is configurable only when customizing SoftKey (1-4). Click Confirm to accept the change. Note Programable keys are configurable via web user interface only. The MUTE key cannot be customized when keep mute feature is enabled.
Page 134: Ext Keys
For more information, refer to Account Management You can register one or multiple accounts on the SIP-T48G IP phone. You can also configure each line key to associate with an account or configure multiple line keys to associate with an account.
Page 135: Default Account
Customizing Your Phone Single account: Multiple accounts: To disable an account via phone user interface: ->Advanced (default password: admin) ->Account. Tap the desired account. Tap the gray box of the Activation field, and then select Disabled from the pull-down list. Tap the Save soft key to accept the change or to cancel.
Page 136 User Guide for the SIP-T48G IP Phone Tap the gray box of the Default Account field, and then select the desired account from the pull-down list. Tap the Save soft key to accept the change or to cancel. The label of the default account is displayed on the left of the status bar. The IP phone will use this account by default when dialing out.
Page 137: Dial Plan
Dial Plan Dial plan is a string of characters that governs the way your SIP-T48G IP phone processes the inputs received from your phone keypad. The SIP-T48G IP phone supports the following dial plan features: Replace Rule ...
Page 138: Replace Rule
User Guide for the SIP-T48G IP Phone Area Code  Block Out  The basic expression syntax you need to know: The dot "." can be used as a placeholder or multiple placeholders for any character. Example: "12." would match "123", "1234", "12345", "12abc", etc.
Page 139: Dial Now
Customizing Your Phone Enter the string (e.g., 1) in the Prefix field. Enter the string (e.g., 1234) in the Replace field. Enter the desired line ID in the Account field or leave it blank. Click Add to add the replace rule. When you enter the number “1”...
Page 140 User Guide for the SIP-T48G IP Phone number matches the dial now string, the number will be dialed out automatically. For example, a dial now rule is configured as "2xx", any entered three-digit string beginning with 2 will then be dialed out automatically on the phone.
Page 141: Area Code
Customizing Your Phone The default value is “1”. Click Confirm to accept the change. Note Time out for dial now rule is configurable via web user interface only. Area Code Area codes are also known as Numbering Plan Areas (NPAs). They usually indicate geographical areas in a country.
Page 142: Block Out
User Guide for the SIP-T48G IP Phone For more information on the valid values for the Account field, refer to Replace Rule page 124. Click Confirm to accept the change. Note The default value of minimum and maximum length is 1 and 15 respectively.
Page 143: Emergency Number
Customizing Your Phone Emergency Number Public telephone networks in countries around the world have a single emergency telephone number (emergency services number), that allows a caller to contact local emergency services for assistance when necessary. The emergency telephone number may differ from country to country.
Page 144: Live Dialpad
User Guide for the SIP-T48G IP Phone Live Dialpad You can enable live dialpad feature on the SIP-T48G IP phone, which enables the IP phone to automatically dial out a phone number without pressing the send key. You can also configure a delay, and then the phone will dial out the phone number automatically after the designated period of time.
Page 145 Customizing Your Phone To configure the hotline number via phone user interface: ->Features->Hot Line. Enter the desired number in the Hotline Number field. Enter the desired delay time in the Hotline Delay field. The valid values range from 0 to 10 (seconds) and the default value is 4. Tap the Save soft key to accept the change or to cancel.
Page 146 User Guide for the SIP-T48G IP Phone...
Page 147: Basic Call Features
Basic Call Features Basic Call Features The SIP-T48G IP phone is designed to be easily used like a regular phone on a public switched telephone network (PSTN). You can place calls, answer calls, transfer a call to someone else, or conduct a conference call.
Page 148: Placing Calls
User Guide for the SIP-T48G IP Phone Placing Calls You can place a call in one of three ways using your SIP-T48G IP phone: Using the handset  Using the speakerphone  Using the headset  You can also dial the number first, and then choose the way you want to speak to the other party.
Page 149 Basic Call Features You can also enter the number using the on-screen keypad. Press , or tap Send. The # key is configured as a send key by default. You can also set the * key as the send key, or set neither.
Page 150: Answering Calls
50 calls at one time. To place multiple calls: You can have more than one call on your SIP-T48G IP phone. To place a new call during an active call, do one of the following: Tap the line key. The active call is placed on hold.
Page 151 Basic Call Features Answering When Not in Another Call Call duration and destination will always appear on the touch screen for the active call. To answer a call using the handset: Pick up the handset. To answer a call using the hands-free (speakerphone) mode: Do one of the following: Press With the handset on-hook and the headset mode deactivated, tap the Answer soft key.
Page 152: Auto Answer
User Guide for the SIP-T48G IP Phone You can use auto answer feature to automatically answer an incoming call using the speakerphone. Auto answer is configurable on a per-line basis. You can choose to mute the local microphone when an incoming call is answered automatically.
Page 153: Ending Calls
Basic Call Features Ending Calls To end a call: Do one of the following: If you are using the handset, press , the End Call soft key or hang up the handset. If you are using the headset, press or the End Call soft key. If you are using the speakerphone, press or the End Call soft key.
Page 154 User Guide for the SIP-T48G IP Phone Select Enabled from the pull-down list of Recent Call In Dialing. Click Confirm to accept the change. Note Recent call in dialing is configurable via web user interface only. To view placed calls list when the phone is on the dialing interface: Pick up the handset, press the Speakerphone key or tap the line key.
Page 155: Auto Redial
Basic Call Features You can also enter a few continuous characters of the contact name or continuous numbers of the contact number (office, mobile or other number) to search from placed calls list. Auto Redial You can enable auto redial to automatically redial a phone number when the called party is busy. You can also configure the number of auto redial attempts and the time to wait between redial attempts.
Page 156: Call Completion
User Guide for the SIP-T48G IP Phone Auto redial is configurable via web user interface at the path Features->General Information. To use auto redial: When the called party is busy, the following prompt will appear on the touch screen of the phone: Tap the OK soft key to activate auto redial.
Page 157 Basic Call Features Tap the On radio box of the Call Completion field. Tap the Save soft key to accept the change or to cancel. Call completion is configurable via web user interface at the path Features->General Information. To use call completion: When the called party is busy, the following prompt will appear on the touch screen of the phone: Tap OK, the phone will then returns to the idle screen and call completion will be activated.
Page 158: Recall
User Guide for the SIP-T48G IP Phone When the called party becomes idle, the following prompt will appear on the touch screen of the phone: Tap OK to redial the number. Call completion is not available on all servers. For more information, contact your system Note administrator.
Page 159: Call Mute
Basic Call Features Tap the Save soft key to accept the change or to cancel. Recall key is configurable via web user interface at the path Dsskey->Line key. Call Mute You can mute the microphone of the active audio device during an active call so that the other party cannot hear you.
Page 160: Muting While Dialing
User Guide for the SIP-T48G IP Phone The mute key LED illuminates solid red. The touch screen indicates that the call is now muted. To un-mute a call: Press again to un-mute the call. The mute key LED goes out.
Page 161 Basic Call Features The touch screen indicates that the call is on hold. Note The phone will beep softly every 30 seconds to remind you that you still have a call on hold. The phone ignores engaged audio device (handset or headset) and switches to Speakerphone to play the hold tone by default.
Page 162: Do Not Disturb (Dnd)
User Guide for the SIP-T48G IP Phone Do Not Disturb (DND) You can use DND to reject incoming calls automatically on the phone. The prompt message “n New Missed Call(s)” (“n” indicates the number of missed calls, e.g., 1 New Missed Call(s)) will appear on the touch screen, and callers will receive a busy message.
Page 163 Basic Call Features There are two DND modes: Phone (default): DND is effective for the phone system.  Custom: DND can be configured for each or all accounts.  To configure the DND mode via web user interface: Click on Features->Forward&DND. In the DND block, mark the desired radio box in the Mode field.
Page 164 User Guide for the SIP-T48G IP Phone The icon appears on the status bar. When DND and busy forward are activated in phone mode, calls will be sent to the configured Note destination number. For more information on busy forward, refer to Call Forward on page 153.
Page 165 Basic Call Features If you activate DND for the default account, the associated line icon will change to , and the icon will appear on the status bar. If you activate DND for the non-default account, only the associated line icon will change...
Page 166 User Guide for the SIP-T48G IP Phone If you activate DND for all accounts, all line icons will change to and the icon will appear on the status bar. When DND and busy forward are activated for a specific account, calls from the specific account Note will be sent to the configured destination number.
Page 167: Call Forward
Basic Call Features When DND is activated on the phone, the phone can still receive incoming calls from the numbers specified in the DND Authorized Numbers field. Note DND authorized number is configurable via web user interface only. When the phone misses a call, a prompt window will pop up by default. If you want to disable the feature, contact your system administrator for more information.
Page 168 User Guide for the SIP-T48G IP Phone To configure the call forward mode via web user interface: Click on Features->Forward&DND. In the Forward block, mark the desired radio box in the Mode field. Click Confirm to accept the change. Note Call forward mode is configurable via web user interface only.
Page 169 Basic Call Features (Optional.) Enter the always forward on code or off code respectively in the On Code or Off Code field. If you tap Busy Forward: Tap the On radio box of the Busy Forward field. Enter the destination number you want to forward incoming calls to when the phone is busy in the Forward to field.
Page 170 User Guide for the SIP-T48G IP Phone (Optional.) Enter the no answer forward on code or off code respectively in the On Code or Off Code field. Tap the Save soft key to accept the change. The icon on the idle screen indicates that the call forward is activated.
Page 171 Basic Call Features (Optional.) Enter the always forward on code or off code respectively in the On Code or Off Code field. You can also activate always forward for all accounts. Do the following: Tap the All Lines soft key. The touch screen prompts “Copy to all lines?”.
Page 172 User Guide for the SIP-T48G IP Phone (Optional.) Enter the busy forward on code or off code respectively in the On Code or Off Code field. You can also activate busy forward for all accounts. Do the following: Tap the All Lines soft key.
Page 173 Basic Call Features (Optional.) Enter the no answer forward on code or off code respectively in the On Code or Off Code field. You can also activate no answer forward for all accounts. Do the following: Tap the All Lines soft key. The touch screen prompts “Copy to all lines?”.
Page 174 User Guide for the SIP-T48G IP Phone If you activate call forward for the default account, the associated line icon will change to and the icon will appear on the status bar. If you activate call forward for the non-default account, only the associated line icon will change...
Page 175 Basic Call Features If the forward on code or off code is configured, the IP phone sends the corresponding code to the server when a certain action takes place. For example, if you set the Always Forward on code to be *71 (may vary on different servers), and the target number to be 1234. When you activate Always Forward on the IP phone, the IP phone sends *711234 to the server, and then the server will activate Always Forward feature on the server side, hence being able to get the right status of the extension.
Page 176: Dynamic Forwarding
User Guide for the SIP-T48G IP Phone To deactivate call forward in phone mode: Do one of the following: Press when the phone is idle. ->Features->Call Forward. Tap the desired forwarding type. Tap the Off radio box. Tap the Save soft key to accept the change.
Page 177: Call Transfer
Basic Call Features Call Transfer You can transfer a call to another party during a call in one of three ways: Blind Transfer: Transfer a call directly to another party without consulting.  Semi-Attended Transfer: Transfer a call when the target phone is ringing. ...
Page 178: Semi-Attended Transfer
User Guide for the SIP-T48G IP Phone To perform a blind transfer to exist call: Press or tap the Transfer soft key during a call. Tap the desired hold call you want to transfer the call to on the left side.
Page 179: Attended Transfer
Basic Call Features Attended Transfer Before performing an attended transfer (except you use dial number method), make sure that the transfer mode on DSS key is configured as New Call or Attended Transfer. For more information on how to configure it, refer to Configuring Transfer Mode on DSS Key on page 188.
Page 180: Conference
Contact your server administrator for more information. Conference You can use the SIP-T48G IP phone to create a conference with other two parties using the phone’s local conference or create a conference with multiple participants which is called network conference.
Page 181 Basic Call Features When the first party answers the call, tap the Conference soft key to place a new call. The active call is placed on hold. Enter the number of the second party, and then press , or tap Conference. When the second party answers the call, tap the Conference soft key again to join all parties in the conference.
Page 182: Network Conference
Tap the End Call soft key to drop the conference call. Network Conference You can use network conference feature on the SIP-T48G IP phone to conduct a conference with multiple participants. This feature allows you to perform the following: Join two calls together into a conference call.
Page 183: Call Park/Retrieve
Basic Call Features Click Confirm to accept the change. Note Network conference is configurable via web user interface only. To set up a network conference call: Place a call to the first party. Tap the Conference soft key to place a new call. The active call is placed on hold.
Page 184 User Guide for the SIP-T48G IP Phone To configure a call park key via phone user interface: Tap Menu->Features->DSS Keys. Tap the desired DSS key. Tap the gray box of the Type field, and then select Key Event from the pull-down list.
Page 185: Fac Mode
Basic Call Features Tap the gray box of the Account ID field, and then select the desired line from the pull-down list. (Optional.) Enter the string that will appear on the LCD screen in the Label field. Enter the park retrieve code in the Value field. Tap the Save soft key to accept the change or the to cancel.
Page 186 User Guide for the SIP-T48G IP Phone It is configured for the Retrieve soft key. This park retrieve code will also apply to the retrieve park key. Click Confirm to accept the change. Note If the Park or Retrieve soft key doesn’t appear on the LCD screen, please select Disabled from the pull-down list of Custom Softkey via web user interface at path Settings->Softkey...
Page 187 Basic Call Features If the call park code is configured, the phone will dial the configured call park code shown as below: Do one of the following: If you want to park the call against the local extension. Press If the call is parked successfully, you will hear a voice prompt confirming that the call is parked.
Page 188: Transfer Mode
User Guide for the SIP-T48G IP Phone The phone will dial the configured park retrieve code and the Retrieve screen appears as below: Follow the voice prompt, do one of the following: Press on the phone where the call is parked.
Page 189 Basic Call Features It is configured for the Retrieve soft key. This park retrieve code will also apply to the retrieve park key. Click Confirm to accept the change. Note If the Park or Retrieve soft key doesn’t appear on the LCD screen, please select Disabled from the pull-down list of Custom Softkey via web user interface at path Settings->Softkey Layout.
Page 190: Call Pickup
The phone will retrieve the parked call from the shared parking lot. Call Pickup You can use call pickup to answer someone else’s incoming call on your phone. The SIP-T48G IP phone supports directed call pickup and group call pickup. Directed call pickup is used for picking up a call that is ringing at a target phone number.
Page 191 Basic Call Features Enter the directed call pickup code in the Directed Call Pickup Code field. Click Confirm to accept the change. To configure the directed call pickup code on a per-line basis via web user interface: Click on Account->Advanced. Select the desired account from the pull-down list of Account.
Page 192: Group Call Pickup
User Guide for the SIP-T48G IP Phone To pick up a call directly: Pick up the handset, tap the line key or press the Speakerphone key. The DPickup appears on the on-screen keypad. Tap DPickup on your phone when the target phone receives an incoming call.
Page 193 Basic Call Features Enter the group call pickup code in the Group Call Pickup Code field. Click Confirm to accept the change. To configure the group call pickup code on a per-line basis via web user interface: Click on Account->Advanced. Select the desired account from the pull-down list of Account.
Page 194: Anonymous Call
User Guide for the SIP-T48G IP Phone The GPickup appears on the on-screen keypad. Tap GPickup on your phone when a phone in the group receives an incoming call. The call is answered on your phone. You can also configure a DSS key as a group pickup key via phone user interface or web user interface.
Page 195: Anonymous Call Rejection
Basic Call Features (Optional.) Enter the anonymous call on code and off code respectively in the On Code and Off Code field. The phone will send the configured on code or off code depending on your selection when you enable or disable anonymous call feature on the phone. Tap the Save soft key to accept the change or to cancel.
Page 196 User Guide for the SIP-T48G IP Phone rejection on/off code to the server to activate/deactivate anonymous call rejection on the server side. To configure anonymous call rejection via phone user interface: ->Features->Anonymous. Tap the desired line. Tap the On radio box of the Local Anony Rejection field.
Page 197: Advanced Phone Features
Advanced Phone Features Advanced Phone Features This chapter provides operating instructions for the advanced features of the SIP-T48G IP phone. Topics include: Busy Lamp Field (BLF)  BLF List  Call Recording  Hot Desking  Intercom  Multicast Paging ...
Page 198 User Guide for the SIP-T48G IP Phone (Optional.) Enter the string that will appear on the touch screen in the Label field. Enter the phone number or extension you want to monitor in the Value field. (Optional.) Enter the directed call pickup code in the Extension field.
Page 199 Advanced Phone Features Select Enabled from the pull-down list of Audio Alert for BLF Pickup. Click Confirm to accept the change. Note Visual and audio alert features are configurable via web user interface only. To configure BLF ring type via phone user interface: ->Basic->Sound->BLF Ring Type.
Page 200 User Guide for the SIP-T48G IP Phone The BLF key icon flashes red.  The caller ID appears on the touch screen (if enabled).  In the following figure, the touch screen shows an incoming call from 1008 on the monitored line.
Page 201 Advanced Phone Features To configure the directed call pickup code on a global basis via web user interface: Click on Features->Call Pickup. Enter the desired pickup code in the Directed Call Pickup Code field. Click Confirm to accept the change. To configure the directed call pickup code on a per-line basis via web user interface: Click on Account->Advanced.
Page 202: Using Blf Feature On The Ip Phone
User Guide for the SIP-T48G IP Phone Configuring Transfer Mode on DSS Key When there is an active call on the IP phone, you can handle the active call differently using a BLF key. The phone behavior depends on the configuration of transfer mode via DSS key with the BLF key.
Page 203 Advanced Phone Features Transferring a Call to the Monitored User When there is already an active call on the IP phone, you can transfer the active call to the monitored user by tapping the BLF key. The phone handles the active call differently depending on the configuration of transfer mode via DSS key with the BLF key (refer to Configuring Transfer Mode on DSS...
Page 204: Blf List
User Guide for the SIP-T48G IP Phone DPickup soft key. Before picking up an incoming call, ensure that the directed call pickup code has been configured in advance. To pick up an incoming call using the BLF key or the DPickup soft key: Tap the BLF key or the DPickup soft key.
Page 205 Advanced Phone Features monitored user by tapping the BLF List key. The phone handles the active call differently depending on the configuration of transfer mode via Dsskey. For more information on the transfer mode on DSS key, refer to refer to Configuring Transfer Mode on DSS Key on page 188.
Page 206: Call Recording
Call Pickup on page 176. Call Recording The SIP-T48G IP phone supports local and server recording. If you insert a USB flash drive into the USB port on your phone, you can record active calls on your phone. The recordings are...
Page 207: Recording Using A Usb Flash Drive
Advanced Phone Features saved as *.wav files on your USB flash drive. You can also record active calls by tapping a record key on the phone (refer to Recording Using a Record Key). The recordings are saved on the server. Before recording any call, especially those involving PSTN, it is necessary to know about the rules Note and restrictions of any governing call-recording in the place you are in.
Page 208 User Guide for the SIP-T48G IP Phone The following figure shows an example: Recording using a USB flash drive is not available by default. For more information, contact your Note system administrator. The size of a single recording file should be less than 2G.
Page 209 Advanced Phone Features The LCD screen displays the icon and recording duration. During the recording, you can do the following: Tap the More soft key, and then tap the PauseREC soft key. Then appears on the touch screen and the duration stops counting. The ResumeREC soft key appears on the LCD screen.
Page 210 User Guide for the SIP-T48G IP Phone If there is insufficient free space (30 minutes left) on the USB flash drive during recording, the LCD screen prompts the following: Tap Cancel to return to the previous screen. If there is insufficient free space (10 minutes left) on the USB flash drive during recording, the LCD screen prompts the following: Tap the Cancel soft key to return to the previous screen.
Page 211: Playing Back Recorded Calls
Advanced Phone Features To stop recording while the phone records, do one of the following: Tap the More soft key, and then tap the StopREC soft key. The LCD screen prompts “Call has been successfully recorded on USB device”, the recording icon and recording duration disappear.
Page 212 User Guide for the SIP-T48G IP Phone To browse the recorded files: ->USB->Browse Audio. The touch screen shows all recorded audio files in the Browse Audio list. The filename consists of the recording time & date, the other party’s number/IP address/name (or the first person’s number/IP address/name you called).
Page 213 Advanced Phone Features Speakerphone, Headset and Handset modes. If you are playing back a recorded call and an incoming call arrives on your phone, the playback will be paused and the phone rings. You can tap again to continue to play the recording when ending the call.
Page 214: Recording Using A Record Key
To view the storage space: ->USB->Storage Space. Recording Using a Record Key You can record calls by tapping a record key on the phone. The SIP-T48G IP phone supports record and URL record. Two ways of call recording: Record: The phone sends a SIP INFO message containing a specific header “Record: on/off”...
Page 215 Advanced Phone Features Configuring a Record Key To configure a record key via phone user interface: ->Features->DSS Keys. Tap the desired line key. Tap the gray box of the Type field, and then select Key Event from the pull-down list. Tap the gray box of the Key Type field, and then select Record from the pull-down list.
Page 216: Recording A Call
User Guide for the SIP-T48G IP Phone Enter the URL (e.g., http://10.1.2.224/phonerecording.cgi) in the Value field. Tap the Save soft key to accept the change or to cancel. URL record key is configurable via web user interface at the path Dsskey->Line Key.
Page 217: Hot Desking
You can use hot desking on the SIP-T48G IP phone to log out of existing accounts and then log into a new account. As a result, many users can share the phone resource at different times. To use this feature, you need to configure a hot desking key in advance.
Page 218 User Guide for the SIP-T48G IP Phone To use hot desking: Tap the hot desking key when the phone is idle. The touch screen prompts the following warning: Tap OK Registration configurations of all accounts on the phone will be cleared immediately.
Page 219: Intercom
Advanced Phone Features Intercom Intercom is a useful feature in an office environment to quickly connect with the operator or the secretary. You can tap the intercom key to automatically connect with a preconfigured target extension for outgoing intercom calls, and the target extension will automatically answer incoming intercom calls by default.
Page 220: Incoming Intercom Calls
Intercom key is configurable via web user interface at the path Dsskey->Line Key. Incoming Intercom Calls The SIP-T48G IP phone supports to automatically answer an incoming intercom call by default. The phone automatically plays a warning tone when it receives an incoming intercom call. In addition, you can enable the phone to mute the microphone when it automatically answers an incoming intercom call.
Page 221: Using Intercom
Advanced Phone Features Intercom Barge You can enable or disable the phone to automatically answer an incoming intercom call while there is already an active call on the phone. If Intercom Barge is enabled, the phone will automatically answer the intercom call and place the active call on hold. If Intercom Barge is disabled, the phone will handle an incoming intercom call like a waiting call.
Page 222: Multicast Paging
You can specify up to 31 multicast listening addresses and channels. The following describes 31 paging channels: 0: You can broadcast audio to channel 0. Note that the Yealink IP phones running old  firmware version (old paging mechanism) can be regarded as listening to channel 0. It is the default channel.
Page 223: Sending Rtp Stream
Advanced Phone Features (new paging mechanism). The IP phones will automatically ignore all incoming multicast paging calls on the different channel. Sending RTP Stream To configure a multicast paging key via phone user interface: ->Features->DSS Keys. Tap the desired line key. Tap the gray box of the Type field, and then select Key Event from the pull-down list.
Page 224 User Guide for the SIP-T48G IP Phone To configure a paging list key via phone user interface: ->Features->DSS Keys. Tap the desired line key. Tap the gray box of the Type field, and then select Key Event from the pull-down list.
Page 225 Advanced Phone Features Tap the Edit soft key. Enter the multicast IP address and port number (e.g., 224.5.6.20:10008) in the Address field. The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255. Enter the string that will appear on the touch screen in the Label field Enter the desired channel in the Channel field.
Page 226: Receiving Rtp Stream
User Guide for the SIP-T48G IP Phone If you want to delete all paging groups, you can tap the Delete All soft key. You can also configure the phone to use a default codec for sending multicast RTP stream via web user interface.
Page 227 Advanced Phone Features How the phone handles incoming multicast paging calls depends on Paging Barge, Ignore DND and Paging Priority Active parameters configured via web user interface. Paging Barge The paging barge parameter defines the priority of the voice call in progress. If the priority of an incoming multicast paging call is lower than that of the active call, it will be ignored automatically.
Page 228: Using Multicast Paging
User Guide for the SIP-T48G IP Phone The default channel is 0. Click Confirm to accept the change. Note The priorities of listening addresses are predefined: 1 with the highest priority, 31 with the lowest. Multicast listening addresses are configurable via web user interface only.
Page 229 Advanced Phone Features The following figure shows a multicast RTP session on the phone: You can do the following: Tap the Hold soft key to place the current multicast RTP session on hold.  The sender’s phone places the multicast RTP session on hold and receiver’s phone releases the session.
Page 230: Music On Hold (Moh)
User Guide for the SIP-T48G IP Phone Your can do the following: Tap the Hold soft key to place the current multicast RTP session on hold.  The sender’s phone places the multicast RTP session on hold and receiver’s phone releases the session.
Page 231: Automatic Call Distribution (Acd)
ACD on the SIP-T48G IP phone allows the ACD system to distribute large volumes of incoming calls to the registered ACD users. To use this feature, you should configure an ACD key in advance. For...
Page 232 User Guide for the SIP-T48G IP Phone The touch screen prompts you the following information: User ID: the identity used to log into the queue. Password: the password used to log into the queue. Tap the Login soft key to log in.
Page 233: Shared Call Appearance (Sca)
Advanced Phone Features Shared Call Appearance (SCA) You can use SCA feature to share an extension which can be registered on two or more IP phones at the same time. The shared line is indicated by a different line icon. In the following figure, the first line is private and the second line is shared: If two phones share a line, an incoming call to this extension will cause both phones to ring simultaneously.
Page 234: Configuring Sca Feature On The Ip Phone
User Guide for the SIP-T48G IP Phone Configuring SCA Feature on the IP Phone You can configure a primary account on the IP phone and other alternate accounts on the other IP phones. In a SCA Hybrid Key System scenario, you can automatically assign multiple DSS keys with Line type for a registered shared line on the phone (If auto linekeys feature is enabled).
Page 235 Advanced Phone Features Auto LineKeys is you can automatically assign multiple DSS keys with Line enabled, type for a registered shared line on the phone. Click Confirm to accept the change. To configure the shared line settings and the number of line key on phone A via web user interface: Register the primary account 4603.
Page 236 User Guide for the SIP-T48G IP Phone Click on Advanced, and then select Shared Call Appearance from the pull-down list of Shared Line. Enter the desired number in the Number of line key field. This field appears only if Auto Linekeys is enabled.
Page 237 Advanced Phone Features (Enter the primary account 4603 in the Register Name field.) Click on Advanced, and then select Shared Call Appearance from the pull-down list of Shared Line. Enter the desired number in the Number of line key field. This field appears only if Auto Linekeys feature is enabled.
Page 238 User Guide for the SIP-T48G IP Phone Click Confirm to accept the change. The phone B will automatically configure the line keys from the first unused DSS key, according to the configured number in the Number of line key field.
Page 239 Advanced Phone Features Tap the gray box of the Key Type field, and then select Private Hold from the pull-down list. (Optional.) Enter the string that will appear on the touch screen in the Label field. Tap the Save soft key to accept the change or to cancel.
Page 240: Using Sca Feature On The Ip Phone
Using SCA Feature on the IP Phone This section provides you with detailed information on using the SIP-T48G IP phone in a SCA Hybrid Key System scenario. In a SCA Hybrid Key System scenario, the status of the line key icon which associates with a shared line will change.
Page 241 The icon indicators of the line key 2 on both phone A and phone B will become flashing. You can answer the incoming call on either phone A or phone B. The touch screen of phone A displays the information of the incoming call (e.g., “Incoming Call: pbx.yealink.com”). Note Make sure call waiting feature is enabled on phone A.
Page 242 User Guide for the SIP-T48G IP Phone Do one of the following on phone A: Tap the line key 2. Phone B stops ringing. Tap the Answer soft key. Phone B stops ringing. Tap the incoming call item. Press or tap the Answer soft key. Phone B stops ringing.
Page 243 Advanced Phone Features To place a call on private hold: Tap the PriHold soft key or private hold key on phone A when there is an active call on the shared line (You may need to tap the More soft key to see the PriHold soft key). The icon indicators of line key 1 on phone A will become when the shared line call is placed on private hold.
Page 244 User Guide for the SIP-T48G IP Phone The Cancel, Call Pull, New Call and Retrieve soft keys appear on the touch screen. Tap the Retrieve soft key to retrieve the call. The conversation is established between phone B and phone C, phone A disconnects the call.
Page 245 Advanced Phone Features The Cancel, Call Pull, New Call and Barge In soft keys appear on the touch screen of phone B. Tap the Barge In soft key to interrupt the active call of phone A. Party B will set up a conference call with the other parties in the active call. Press , tap the Hold soft key or the End Call soft key.
Page 246 User Guide for the SIP-T48G IP Phone The Cancel, Call Pull, New Call and Barge In soft keys appear when the active call is highlighted. Tap the Barge In soft key to interrupt the active call of phone A. Party B may hear a warning tone and then set up a conference call with the other parties of the active call.
Page 247 Advanced Phone Features The Cancel, Call Pull, New Call and Barge In soft keys appear on the touch screen of phone B. Tap the Call Pull soft key. The active call has been retrieved from the phone A successfully. If there is a held call between phone A and phone C, do the following: Long tap the desired line key on phone B.
Page 248: Bridged Line Appearance (Bla)
User Guide for the SIP-T48G IP Phone Bridged Line Appearance (BLA) BLA allows users to share a SIP line on two or more IP phones. Users can monitor the specific extension (BLA number) for status changes on each IP phone. To use this feature, a BLA group should be pre-configured on the server and one of them is specified as a BLA number.
Page 249: Configuring Bla Feature On The Ip Phone
Advanced Phone Features Configuring BLA Feature on the IP Phone You can share a BLA number on two or more phones. For example, phone A registers the account 14019833020 and assigns BLA number, phone B registers the account 10462190020 and assigns BLA number, phone C registers the account 14755608020. Phone A and phone B share the BLA number 14084588327.
Page 250 User Guide for the SIP-T48G IP Phone Click on Advanced, and then select Draft BLA from the pull-down list of Shared Line. Enter the desired number in the BLA Number field. Click Confirm to accept the change. To register an account and configure BLA feature on phone B via web user interface: Register the account 10462190020.
Page 251: Using Bla Feature On The Ip Phone
Using BLA Feature on the IP Phone This section provides you with detailed information on using the SIP-T48G IP phone in a BLA scenario. In a BLA scenario, the status of the line key icon which associates with a bridged line will change.
Page 252 User Guide for the SIP-T48G IP Phone Enter the desired number using the keypad and then press , or tap Send. The phone will dial the entered number. To place multiple calls on the bridged line: You can have more than one call on the bridged line. To place a new call when there is an active...
Page 253: Messages
Messages Short Message Service (SMS) You can send and receive text messages using the SIP-T48G IP phone. New text messages can be indicated both acoustically and visually. When receiving a new text message, the phone will play a warning tone. The power indicator LED will slowly flash red, and the touch screen will prompt “n New Text Message(s)”...
Page 254 User Guide for the SIP-T48G IP Phone You can store text messages in your phone’s Inbox, Sentbox, Outbox or Draftbox. Each of the boxes can store up to 100 text messages. If the number of the text messages in one box is more than 100, the phone will directly delete the oldest text message in the box.
Page 255 Advanced Phone Features Tap the gray box of the From field, and then select the desired account from the pull-down list. Enter the number you want to send the message to in the To field. Tap the Send soft key to send message or to cancel.
Page 256 User Guide for the SIP-T48G IP Phone Tap the desired message and then tap the Delete soft key. The touch screen prompts “Delete this message?”. Tap OK to delete this message or Cancel to cancel. You can also delete all text messages by tapping the Delete All soft key. For more information, refer to the above steps.
Page 257: Voice Mail
Voice Mail You can leave voice mails for someone else using the SIP-T48G IP phone. You can also listen to the voice mails that are stored in a voice mailbox. This feature is set up on the server side. It is not available on all servers.
Page 258 User Guide for the SIP-T48G IP Phone You can tap the IME soft key to change the input mode. Tap the Save soft key to accept the change or to cancel. Voice mail access codes must be predefined on the system server. Contact your system Note administrator for the more information.
Page 259: Message Waiting Indicator (Mwi)
LED slowly flashes red. This will be cleared when you retrieve all voice mails or delete them. The MWI service is unsolicited for some servers, so the SIP-T48G IP phone only handles the MWI messages sent from the server. But for other servers, the MWI service is solicited, so the SIP-T48G IP phone must enable subscription for MWI.
Page 260 User Guide for the SIP-T48G IP Phone Enter the period time in the MWI Subscription Period(Seconds) field. Click Confirm to accept the change. The IP phone will subscribe to the account number for MWI service by default. To enable subscribe MWI to voice mail via web user interface: Click on Account->Advanced.
Page 261 Advanced Phone Features The IP phone will subscribe to the voice mail number for MWI service using Subscribe MWI To Voice Mail. Note MWI subscription is configurable via web user interface only.
Page 262 User Guide for the SIP-T48G IP Phone...
Page 263: Appendix
Appendix Appendix Appendix A – Time Zones Time Zone Time Zone Name Samoa United States-Hawaii-Aleutian, United States-Alaska-Aleutian -9:30 French Polynesia United States-Alaska Time Canada(Vancouver,Whitehorse), Mexico(Tijuana,Mexicali), United States-Pacific Time Canada(Edmonton,Calgary), Mexico(Mazatlan,Chihuahua), United States-MST no DST, United States-Mountain Time Canada-Manitoba(Winnipeg), Chile(Easter Islands), Mexico(Mexico City,Acapulco), United States-Central Time Bahamas(Nassau), Canada(Montreal,Ottawa,Quebec), Cuba(Havana), United States-Eastern Time...
Page 264 User Guide for the SIP-T48G IP Phone Time Zone Time Zone Name +9:30 Australia(Adelaide), Australia(Darwin) Australia(Brisbane), Australia(Hobart), Australia(Sydney,Melboume,Canberra), Russia(Vladivostok) +10:30 Australia(Lord Howe Islands) New Caledonia(Noumea), Russia(Srednekolymsk Time) +11:30 Norfolk Island New Zealand(Wellington,Auckland), Russia(Kamchatka Time) +12:45 New Zealand(Chatham Islands) Tonga(Nukualofa) +13:30...
Page 265: Appendix B - Menu Structure
Appendix Appendix B – Menu Structure...
Page 266 User Guide for the SIP-T48G IP Phone...
Page 267: Index
Index Index Call Completion About This Guide Call Forward Accessing the Remote Phone Book Call History Management Account Management Call Hold/Resume Account Registration Call Mute Activating the Bluetooth Mode Call Park/Retrieve Activating the Wi-Fi Mode Call Pull Adding a Contact to the Local Call Pickup Directory/Blacklist Call Recording...
Page 268 User Guide for the SIP-T48G IP Phone Deactivating the Bluetooth Mode General Settings Deactivating the Wi-Fi Mode Getting Started Default Account Group Call Pickup Deactivating the Wireless Network Connection Declaration of Conformity Hardware Component Instructions Deleting Contacts Headset Mode Activation/Deactivation...
Page 269 Index Placing Calls to Contacts Playing Back Recorded Calls Managing the Saved Wireless Network Power Saving Manually Add a Wireless Network Programable Keys Manually Connect to an Available Wireless Network Message Waiting Indicator (MWI) Messages ReCall Mobile Contacts Receiving RTP Stream Multicast Paging Recent Call In Dialing Multiple Line Keys per Account...
Page 270 User Guide for the SIP-T48G IP Phone Using BLA Feature on the IP Phone Using BLF Feature on the IP Phone Using Intercom Using Multicast Paging Using SCA Features on the IP Phone Viewing History Records Viewing the Bluetooth Headset Information...

Yealink SIP-T48G User Manual

About this Guide

Table of Contents

Overview

Getting Started

Customizing Your Phone

Basic Call Features

Advanced Phone Features

Appendix

Appendix A - Time Zones

Appendix B - Menu Structure

Index

Quick Links

Need help?

Questions and answers

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Summary of Contents for Yealink SIP-T48G

Table of Contents