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AudioCodes Mediant 1000 MSBG Configuration Note

Interfacing between pbx t1 line & skype
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AudioCodes Mediant™ 1000 MSBG 
interfacing between
PBX T1 Line & Skype™ 
Configuration Note
October 2010 
Document # LTRT‐26300 

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  • Page 1 AudioCodes Mediant™ 1000 MSBG  interfacing between PBX T1 Line & Skype™  Configuration Note October 2010  Document # LTRT‐26300 ...

  • Page 3: Table Of Contents

    Connecting to E1/T1 Trunks ....................16     2.2.6 Connecting to Power......................16     Initialization – Assigning LAN IP Address to Mediant 1000 MSBG ....... 17     Configuring Mediant 1000 MSBG ................21     4.1  Prerequisites ........................
  • Page 4 Figure 4-18: Source Phone Number Manipulation Table for Tel IP Calls ............38   List of Tables Table 2-1: Front-Panel Component Description ....................9   Table 2-2: Rear-Panel Component Descriptions ....................10   Table 3-1: Default Voice (VoIP) and Management LAN IP Address ..............17   Mediant 1000 MSBG Document #: LTRT-26300...
  • Page 5 Notices Notice This document describes the configuration of AudioCodes’ Mediant 1000 MSBG for interfacing between a legacy PBX with T1 lines and Skype. Information contained in this document is believed to be accurate and reliable at the time of printing.
  • Page 6 PBX T1 & Skype Reader’s Notes Mediant 1000 MSBG Document #: LTRT-26300...

  • Page 7: Introduction

    MSBG and the Skype Business account. This setup includes Skype on the IP side and a legacy PBX using a T1 interface on the other side, with Mediant 1000 MSBG interfacing between these two entities. This architecture is illustrated in the figure below:...
  • Page 8 PBX T1 & Skype Reader’s Note Mediant 1000 MSBG Document #: LTRT-26300...

  • Page 9: Hardware Installation

    Physical Description This section provides a physical description of the Mediant 1000 MSBG. 2.1.1 Front-Panel Description The Mediant 1000 MSBG chassis’ front panel is displayed in the figure below and described Table 2-1. Figure 2-1: Front-Panel Components Table 2-1: Front-Panel Component Description...

  • Page 10: Rear-Panel Description

    PBX T1 & Skype 2.1.2 Rear-Panel Description The Mediant 1000 MSBG chassis’ rear panel is displayed in the figure below and described Table 2-2. Figure 2-2: Rear-Panel Components Table 2-2: Rear-Panel Component Descriptions Item # Label Description Protective earthing screw.

  • Page 11: Cabling

    On the CPU module, connect the first Ethernet port (labeled I) directly to the Ethernet network, using a straight-through RJ-45 Ethernet cable. Optionally, for Ethernet redundancy, connect the second Ethernet port (labeled II) to the Ethernet network. Mediant 1000 MSBG October 2010...

  • Page 12: Crmx Module

    UTP) cable to the module's WAN port (labeled GE WAN). Figure 2-6: Connecting the GbE WAN Port Attach the other end of the cable directly to the WAN network (e.g., to a ADSL or Cable modem). Mediant 1000 MSBG Document #: LTRT-26300...

  • Page 13: 2.2.2.2.2 Optical Fiber Cabling

    - Ensure the minimum bending radius recommended by the Fiber Optic Cable supplier. - Maximum Fiber Optic cable length for multimode fiber is 550 m. • Preserve the minimum-bending ratio indicated by the cable manufacturer. Mediant 1000 MSBG October 2010...

  • Page 14: 2.2.2.2.3 T1 Wan Dsu/Csu Cabling

    Connect the RJ-48c T1 trunk cable to the device’s T1 WAN port (labeled T1 WAN). Figure 2-9: Connecting the T1 WAN DSU/CSU Port Connect the other end of the cable to the T1 line. Mediant 1000 MSBG Document #: LTRT-26300...

  • Page 15: Connecting To The Lan

    FXS: connect the FXS module's ports to fax machines, modems, and/or telephones. • FXO: connect the FXO module's ports to telephone exchange analog lines or PBX extensions. The RJ-11 connector pinouts are shown in the figure below: Figure 2-12: RJ-11 Connector Pinouts Mediant 1000 MSBG October 2010...

  • Page 16: Connecting To E1/T1 Trunks

    If both power units are used (for load sharing - failure protection / redundancy), ensure that you connect each power supply unit to a different AC supply circuit. • The two AC power sources must have the same ground potential. Mediant 1000 MSBG Document #: LTRT-26300...

  • Page 17: Initialization - Assigning Lan Ip Address To Mediant 1000 Msbg

    Initialization – Assigning LAN IP Address to Mediant 1000 MSBG For the Skype environment, you need to assign an IP address to the Mediant 1000 MSBG LAN (voice and management - OAMP, Media, and Control) interface only. WAN interface is not required for the Skype environment.

  • Page 18: Figure 3-2: Multiple Interface Table Page

    Configure the Gateway as the default router IP so that it corresponds to your network IP scheme. Click Apply. Click Done to apply and validate settings. If validation fails, Mediant 1000 MSBG does not reboot. Save your settings to flash memory and reset Mediant 1000 MSBG.

  • Page 19: Figure 3-3: Disabling Embedded Dhcp Server

    Configuration Note 3. Initialization – Assigning LAN IP Address to Mediant 1000 MSBG To disable the embedded DHCP server: Open the ‘DHCP Server’ page (Configuration tab > Data Settings menu > Services submenu > DHCP Server). Verify that both WAN and LAN interface DHCP servers are in disabled status. If not, click on the relevant interface and disable it.
  • Page 20 PBX T1 & Skype Reader’s Notes Mediant 1000 MSBG Document #: LTRT-26300...

  • Page 21: Configuring Mediant 1000 Msbg

    This section provides step-by-step procedures for configuring AudioCodes Mediant 1000 MSBG for connecting to a PBX using T1 and to the Skype environment. The procedures described in this section are performed using the Mediant 1000 MSBG’s Web-based management tool (i.e., embedded Web server).

  • Page 22: Prerequisites

    • Control Protocols: SIP To view the current features available on Mediant 1000 MSBG, open the ‘Software Upgrade Key Status’ page (Management tab > Software Update menu > Software Upgrade Key). If you notice that the above mentioned features are missing, please contact your sales representative in order to verify that all required features were purchased correctly.

  • Page 23: Defining Domain Name Server

    Configuration Note 4. Configuring Mediant 1000 MSBG Defining Domain Name Server The following procedure describes how to configure the Domain Name Server (DNS). To configure the DNS: Open the Application Settings' page (Configuration tab > System menu > Application Settings).

  • Page 24: Defining T1 Trunk Settings

    PBX T1 & Skype Defining T1 Trunk Settings This section describes how to enable the Mediant 1000 MSBG T1 trunk, which is connected to the legacy PBX. This is done by assigning the trunk channels with telephone numbers and other attributes (e.g., Trunk Groups and Profiles).

  • Page 25: Defining Trunk Group Settings

    Configuration Note 4. Configuring Mediant 1000 MSBG 4.3.1.1 Defining Trunk Group Settings The procedure below describes how to define the Trunk Group’s setting. This defines the method for which IP-to-Tel calls are assigned to the Trunk Group’s channel. To define the Trunk Group settings: Open the 'Trunk Group Settings' page (Configuration tab >...

  • Page 26: Figure 4-6: Trunk Settings Page

    On the top of the page, a bar with Trunk number icons displays the status of each trunk, according to the following color codes: • Grey: Disabled • Green: Active • Yellow: RAI alarm • Red: LOS / LOF alarm • Blue: AIS alarm • Orange: D-channel alarm (ISDN only) Mediant 1000 MSBG Document #: LTRT-26300...
  • Page 27 Apply to All Trunks to apply the changes to all trunks); the Stop Trunk button replaces Apply Trunk Settings and the ‘Trunk Configuration State’ displays 'Active'. Save (burn) the configuration and reset Mediant 1000 MSBG using the ‘Maintenance Actions’ page (Management tab > Management Configuration menu > Maintenance Actions).

  • Page 28: Defining Tdm Bus

    Typically, A-Law is used for E1 spans and Mu-Law for T1/J1 spans. • TDM Bus Clock Source – determines the clock source to which Mediant 1000 MSBG synchronizes - generate clock from local source (Internal) or recover clock from PBX line (Network).

  • Page 29: Defining Isdn Trunk Termination Side

    Configuration Note 4. Configuring Mediant 1000 MSBG 4.3.1.4 Defining ISDN Trunk Termination Side The procedure below describes how to change the ISDN termination side (User or Network side). To define the Trunk ISDN termination side: Open the ‘Trunk Settings’ page (Configuration tab > PSTN Settings menu > Trunk Settings).

  • Page 30: Defining Voice Coders

    PBX T1 & Skype Defining Voice Coders Mediant 1000 MSBG communicates with the Skype environment using G.711 μ-law (Mu-Law) voice coder. The procedure below describes how to change the default coder. The Skype environment supports the G.729 coder. If you setup your account to support G.729, then setup Mediant 1000 MSBG accordingly, as described in the procedure below.

  • Page 31: Figure 4-10: Defining Nat Ip Address

    Configuration Note 4. Configuring Mediant 1000 MSBG Figure 4-10: Defining NAT IP Address Verify that the ‘SIP Transport Type' drop-down list is set to 'UDP'. Verify that the ‘SIP UDP Local Port' drop-down list is set to '5060'. Verify that the ‘SIP Destination Port' drop-down list is set to '5060'.

  • Page 32: Defining Proxy & Registration Parameters

    In the 'Password' field, enter the password as defined for the Skype SIP Profile in Section 5.1. Ensure that the ‘Registration Mode’ is set to ‘Per Gateway’. Figure 4-12: Defining SIP Proxy and Registration (1) Mediant 1000 MSBG Document #: LTRT-26300...

  • Page 33: Figure 4-13: Defining Sip Proxy And Registration (2)

    Configuration Note 4. Configuring Mediant 1000 MSBG Figure 4-13: Defining SIP Proxy and Registration (2) Figure 4-14: Defining SIP Proxy and Registration (3) Open the 'Proxy Sets Table' page (Configuration tab > VoIP menu > Proxies, Registration, IP Groups submenu > Proxy Sets Table).

  • Page 34: Figure 4-15: Proxy Sets Table

    Business account, there are two domain names (for example, “1.sip.skype.com” and “2.sip.skype.com”) which are presented on the Skype account to use as destination IP addresses for SIP communication from Mediant 1000 MSBG. From the 'Enable Proxy Keep Alive' drop-down list, select 'Using Options' to discover whether a particular Skype Server in the cluster is available.

  • Page 35: Defining Ip-To-Tel Routing Rules

    Configuration Note 4. Configuring Mediant 1000 MSBG Defining IP-to-Tel Routing Rules The procedure below describes how to define IP-to-Tel routing rules. To define IP-to-Tel routing rules: Open the 'Inbound IP Routing Table' page (Protocol Configuration menu > VoIP > Routing Table submenu > IP to Trunk Group Routing).

  • Page 36: Defining Tel-To-Ip Phone Number Manipulation

    Source number must be the Skype Account User Name. This is obtained when your Skype Business Account is opened (9905XXXXXXXXXX) Destination number configuration can be done on the PBX side or on Mediant 1000 MSBG, by using manipulation tables. This section describes how to manipulate the Tel-to-IP phone number and is based on the following scenario example for destination number manipulation for E.164...

  • Page 37: Figure 4-17: Destination Phone Number Manipulation Table For Tel Ip Calls

    'Prefix to Add': enter the Skype Account User Name. ♦ ‘Number of Digits to Leave’: enter 0 – Mediant 1000 MSBG first deletes the source number received from the PBX and then adds the Skype Account User Name. Mediant 1000 MSBG...

  • Page 38: Figure 4-18: Source Phone Number Manipulation Table For Tel Ip Calls

    PBX T1 & Skype Figure 4-18: Source Phone Number Manipulation Table for Tel IP Calls Save (burn) the configuration and reset Mediant 1000 MSBG, using the Web interface’s ‘Maintenance Actions’ page (Management Configuration menu > Maintenance Actions). Mediant 1000 MSBG...

  • Page 39: Configuring Skype

    If you don’t have an account, create one using the following Web address: https://login.skype.com/bcp/signup-form?application=bcp • If you do have an account, sign in at https://login.skype.com/bcp/login. Once signed in, the Dashboard page appears: On the menu bar, click the Features icon. Mediant 1000 MSBG October 2010...
  • Page 40 PBX T1 & Skype On the left pane, click Skype Connect. No SIP Profiles currently exist. Click the Create a new profile button to create a SIP Profile. Mediant 1000 MSBG Document #: LTRT-26300...
  • Page 41 Enter a SIP Profile name, and then click Next. The SIP User and Password of the SIP Profile must also be defined at AudioCodes Mediant 1000 MSBG in the ‘User Name’ and ‘Password’ fields (in Section 4.6) to allow registration with the Skype and allow outgoing calls from the PBX to the PSTN via Skype.

  • Page 42: Skype Manager Account Configuration

    PBX T1 & Skype Skype Manager Account Configuration Mediant 1000 MSBG Document #: LTRT-26300...

  • Page 43: Buying Skype Credit

    Paypal). Note the price (as for September 2010) is: • Channel: $6.50 per channels per month • Number: $6.95 per number per month • Calls: depends on destination Thus, ensure the credit purchased is sufficient to apply to all required services. Mediant 1000 MSBG October 2010...
  • Page 44 PBX T1 & Skype Once you have purchased the credit and applied it to your account, you can complete the configuration. Mediant 1000 MSBG Document #: LTRT-26300...

  • Page 45: Buying Channel Subscription To Activate Sip Profile

    Buying Channel Subscription to Activate SIP Profile The procedure below describes how to purchase channel subscription. To buy channel subscription to activate SIP Profile: Click buy a channel subscription to activate this profile. The following window appears: Mediant 1000 MSBG October 2010...
  • Page 46 It can be used to make the outgoing Skype calls only. Once the channel subscription is purchased, the following is displayed in the SIP Profile: After channel subscription is applied, it is reflected in the SIP Profile. Mediant 1000 MSBG Document #: LTRT-26300...
  • Page 47 Configuration Note 5. Configuring Skype Once the purchase is complete and the SIP Profile activated, the successful registration from AudioCodes Mediant 1000 MSBG is displayed in the SIP Skype account. Mediant 1000 MSBG October 2010...
  • Page 48 PBX T1 & Skype An example of an outgoing SIP REGISTER message from AudioCodes Mediant 1000 MSBG to Skype and a subsequent 200 OK confirmation from Skype is shown below. A 200 OK message (in network trace) is shown from the Skype SIP server, confirming that the registration was OK: REGISTER sip:sip.skype.com SIP/2.0...

  • Page 49: Setting Up Outgoing Calls

    Click Set up outgoing calls and apply credit to the SIP Profile. The Profile details will be as follows and you will be allowed to make the calls from the PBX to any PSTN number through AudioCodes Mediant 1000 MSBG. Mediant 1000 MSBG...
  • Page 50 PBX T1 & Skype Notes: To test the outbound calls for free, please use the free telco number (from Skype): +17606604690. An example of an incoming SIP INVITE message to AudioCodes Mediant 1000 MSBG from the PBX: INVITE sip:17606604690@192.168.1.30 SIP/2.0   Via: SIP/2.0/UDP 192.168.1.10:52808;branch=z9hG4bK‐d8754z‐53790912af64c408‐ 1‐‐‐d8754z‐  ...
  • Page 51 Configuration Note 5. Configuring Skype   Example of an outgoing SIP INVITE message from AudioCodes Mediant 1000 MSBG to Skype: INVITE sip:+17606604690@sip.skype.com   SIP/2.0 Via: SIP/2.0/UDP 96.253.242.43:5070;branch=z9hG4bKac1896975513   Max‐Forwards: 70   From: Marc <sip:9905XXXXXXXXXX@sip.skype.com>;tag=1c1896592937   To: 17606604690 <sip:+17606604690@sip.skype.com>   Call‐ID: 189654791241200062511@96.253.242.43    CSeq: 1 INVITE   Contact: <sip:9905XXXXXXXXXX@96.253.242.43:5070>   Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE,  INFO   User‐Agent: Audiocodes‐Sip‐Gateway‐/v.6.00AL.017.001 Content‐Length: 0    Content‐Type: application/sdp Content‐Length: 233 v=0 o=‐ 1896336268  1896319161 IN IP4 96.253.XXX.XXX s=CounterPath X‐Lite 3.0 c=IN IP4  96.253.XXX.XXX t=0 0 m=audio 6850 RTP/AVP 107 0 8 101 a=fmtp:101 0‐15  a=rtpmap:107 BV32/16000 a=rtpmap:101 telephone‐event/8000 a=sendrecv  Mediant 1000 MSBG October 2010...

  • Page 52: Configuring Outgoing Calls From Skype To Pbx (Incoming Calls For Skype Account)

    The procedure below describes how to configure outgoing calls from Skype to the PBX (incoming calls for Skype Account). To configure outgoing calls from Skype to PBX: Click Set up Incoming calls. The Setup incoming calls page is displayed below: Mediant 1000 MSBG Document #: LTRT-26300...
  • Page 53 Business account associated with the Profile. Click Add a number or business account. The Incoming call setup page appears and the Add Online Number tab is selected (the second tab is to use Business account to activate incoming calls – see after number activation part). Mediant 1000 MSBG October 2010...
  • Page 54 PBX T1 & Skype To buy a number, click the Buy a new Number button. Make sure you have enough credit in your account. Choose the country. Mediant 1000 MSBG Document #: LTRT-26300...
  • Page 55 SIP Skype user to ring. Calls from existing SIP Skype user to the PBX causes the office phone to ring. The second option, as was mentioned above, is to use the Business account to make incoming calls. Click Create a new account and follow the instructions. Mediant 1000 MSBG October 2010...
  • Page 56 PBX T1 & Skype Click the Create accounts button. Mediant 1000 MSBG Document #: LTRT-26300...
  • Page 57 Return to the Features menu and then to Skype Connect and SIP Profile. Click the Set up incoming calls link and then choose the Add Business Account tab. The page below is displayed and allows you to add the created account to the SIP Profile. Mediant 1000 MSBG October 2010...
  • Page 58 PBX T1 & Skype In the ‘Add an existing business account’ field, enter the created account name and then click Confirm. The SIP Profile is created an account added to SIP Profile. Mediant 1000 MSBG Document #: LTRT-26300...
  • Page 59 Log in to the Skype client with the main user for the Business account and add the contact of the created additional account. By making a call from the main account to the additional account, the call will be forwarded to AudioCodes Mediant 1000 MSBG registered Skype account and then sent to the PBX.
  • Page 60 Configuration Note www.audiocodes.com...

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