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GreaTEL GT8 User Manual

Voip gateway
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GT8 User Manual
Release 2.3
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  • Page 1 GT8 User Manual Release 2.3 www. greatel.net - 1 -...
  • Page 2 Welcome Welcome to the GT8 VoIP Gateway User manual. This document covers features, functionalities, and installation procedures for the GT8 series, and provides tested configuration examples for our gateway users. After reading this book, you will learn more about the gateway, get familiar with the installation process, and feel more comfortable in using the software to perform all administrative activities.

  • Page 3: Table Of Contents

    Temperature/Humidity ........................11 Dust Control and Air Flow ....................... 12 Interference and Lightening Hazard ....................12 Installing GT8........................... 12 Inspecting GT8 and Its Accessories ....................12 INSTALLATION.............................. 14 Installing GT8 ............................14 Connecting the Cables.......................... 14 Connecting the Ethernet Port......................14 Connecting FXS Cable ........................
  • Page 4 Quarantine Default to Loop ......................28 Default Package Don’t Send Name ....................28 Always Enable 1st Digit Timeout..................... 28 Onhook don’t Delete Connection ..................... 28 Notify Instead of 401/402......................... 29 Using L Package Handle FXO ......................29 Using Configured Digit Map ......................29 SIP Setting ..............................
  • Page 5 Do Not Disturb ..........................54 Speed Dial ............................54 Fashion Ring............................. 54 Reverse Battery..........................54 DDI Line............................55 Maintenance ............................. 55 Call Control Reset ..........................55 All Forward Number ........................55 Busy Forward ........................... 55 No answer Fwd Number........................55 Hotline Number ..........................
  • Page 6 Speech CODEC ..........................92 Echo Cancellation........................92 MGCP (Media Gateway Control Protocol) ................93 MGCP Call Agent ......................... 94 401/402 Response Code......................95 NTFY..............................95 SIP (Session Initiation Protocol)....................95 Proxy ............................. 100 Registrar............................100 Registration Expire(s)....................... 100 DNS (Domain Name System, or Service or Server）............100 PPPoE（Point-to-Point Protocol Over Ethernet）...

  • Page 7: Product Introduction

    ADSL. Enterprises can use the GT8’s traditional PBX interface to implement voice VPN solutions with their private IP or public VPN networks. GT8 can also serve as a remote SIP terminal for IP-PBX solution. GT8 has a variety of models. Each model can be customized to have different number of FXS ports and FXO ports.

  • Page 8: Features

    You need to restart GT8 using the instruction in Restart gateway. GT8 also has the capability to restore the default settings. Just click the Restore Default button. GT8 configuration parameters have brief descriptions. To find out, just point your mouse over the parameter.

  • Page 9: Hardware Platform

    • G.168 Echo Cancellation • DTMF RFC2833 and T.38 Hardware Platform Physical Figure 0-1 GT8 Front View Reset button (RST) ① Power indicator (PWR). If lit, power is on ② Ethernet port indicator. If lit, it is in operation ③...

  • Page 10: System Specifications

    PRODUCT INTRODUCTION Power plug-in ① 10/100 baseT Ethernet port ② FXS/FXO ports, a total of 8 ③ Table 0-1 GT8 Configuration Options RJ11 Port Configuration Model Number GT8-4S FXS1 FXS2 FXS3 FXS4 Null Null Null Null GT8-8S FXS1 FXS1 FXS3...

  • Page 11: Preparation For Installation

    It may also cause metal corrosion. All these will drastically shorten the life span of the GT8. It is strongly recommended that user control the environmental temperature www.greatel.net...

  • Page 12: Dust Control And Air Flow

    It may cause long term damage to GT8 will cause equipment failure and shorten equipment life span. Therefore, GT8 needs to have ample air flow in front of the GT8 air intake and outtake for proper heat exhaust. Interference and Lightening Hazard GT8 may experience various types of EMI hazards in operation and its performance may be impacted.
  • Page 13 Preparation for Installation Model Number Description GT8-4S,GT8-8S, Each GT8 may have 4 FXS ports, or 8 GT8-/4, GT8-4S/4 FXS ports, or 4 FXO ports, or 4 FXS/FXO ports. You need to examine carefully to make sure what you receive is what you paid for MX-PWR10-V01-00 GT8 DC adaptor 12V 1.5A...

  • Page 14: Installation

    NSTALLATION Installing GT8 Since GT8 is small, you can put it to a clean and flat workspace. Please make sure it is secured and has ample space for air flow. Connecting the Cables Connecting the Ethernet Port GT8 has one 10/100 Base-T Ethernet port with RJ45 connector. It is equipped with LED status display.
  • Page 15 Installation Figure 0-1 Step2： Twisted pairs. Currently, the most commonly used standard wiring scheme is EIA/TIA T568B shown in Figure 3-2. In the wiring scheme, pin 1 and 2 are a pair, pin 3 and 6 are a pair, pin 4 and 5 are a pair and pin 7 and 8 are a pair. According to the Figure 3-2, twisted pairs line up with colors (1: white orange，2: orange，3: white green，4:blue，5: white blue，...

  • Page 16: Connecting Fxs Cable

    RJ45 connector. After the Ethernet cable is ready, Connect one end of the cable to GT8’s WAN port and the other end to a switch or router. Check the Ethernet status display: light or flash means activity.

  • Page 17: Connecting The Power Supply

    Certain GT8 products, like GT8-4 or GT8-4S/4, have FXO ports that connect to PBX or PSTN. Connect one end of the RJ11 cable to the GT8 FXO port, and connect the other end to a PBX or PSTN line. Connecting the Power Supply Before plugging GT8 into the power outlet, it is suggested that tri- phase power outlet be used and grounding be properly connected.

  • Page 18: Function Description

    UNCTION ESCRIPTION Registration Step1： Power up the GT8. GT8 by default uses DHCP, and will automatically detect an IP address; if you cannot get the IP address (when you connect to the computer directly), use default IP address “192.168.2.218”. After power up (when customer line LCD stops flashing), if the gateway uses MGCP protocol，it will tell the IP address to any first off-hook...

  • Page 19: Function Description Of Most Used Buttons

    GT8 allows multiple users to log on at the same time. Only the first user logged on with highest privilege is able to change configurations. The rest can only monitor configurations.

  • Page 20: System Configurations

    Function Description At the bottom of each configuration page you will see two buttons: Submit and Default. • Submit: When you are done with configuration, click this button once so that the configuration can be saved. After each submission, you will be prompted by “Submission is successful. Please restart the gateway!”...

  • Page 21: Software Version

    If RTP has less than eight ports, four lines can not be used at the same time. GT8 supports up to 8 FXS. So it is highly recommended you set RTP to 16 ports. The default minimum value is 10010～10030.

  • Page 22: Inter Digit Timeout

    This parameter is used in conjunction with x.T in the dialing rule. After the first digit in the rule has been dialed, if within the time specified here no digit follows, GT8 will send the dialed number out. The default value is 5 seconds.

  • Page 23: Echo Cancellation

    Table 0-1 Codes supported Codec supported Time interval of RTP packets Codec mode by GT8 transmission(unit: ms) G729A/20 G.729A G723/30 G.723 PCMU/20 G.711...

  • Page 24: Hardware

    If MGCP call agent starts from “0”, then use aaln/0; if MGCP call agent starts from”1”, then use aaln/1. When you set GT8 to SIP gateway, the value of the prefix should be the first number of the serial phone number which the registry server assigns to the gateway.

  • Page 25: Mgcp Setting

    Function Description For the FXS lines, when the number is not a serial number or a serial number that is not incrementing at order, you can manually enter the number for each FXS line. This gives user more flexibility. Under MGCP mode You can set the phone numbers either like shown in Figure 4-4a or in Figure 4-4b：...

  • Page 26: Mgcp Port

    Figure 4-6. Figure 0-6 MGCP setting screen MGCP Port In the MGCP Port field enter GT8 gateway MGCP port number (example: 2427). You can use any port number as long as it is not the same as other port numbers.

  • Page 27: Domain Name

    L/HD, L/HU, and L/HF. L/HD means off-hook; L/HU means on-hook; and L/HF means hookflash. Wildcard In the Wildcard field select yes or no to indicate if GT8 will put the fixed prefix when it registers (such as ：aaln/*). All Wildcard physical endpoints, hardware installation is needed while virtual endpoint can be created using available software.

  • Page 28: End-Of-Line Using

    Function Description In the All Wildcard field select yes or no to indicate if GT8 will put the fixed prefix when it registers (such as ：*). If Wildcard and All Wildcard are yes, the gateway will deal with all wildcard.

  • Page 29: Notify Instead Of 401/402

    Function Description Notify Instead of 401/402 In the Notify Instead of 401/402 select yes or no. If you select yes, the gateway will use notification message instead of 401/402 message. Using L Package Handle FXO In the Using L Package Handle FXO field select yes or no. If you select yes, the gateway will treat FXO as FXS;...

  • Page 30: Sip Port

    Function Description Figure 0-7 SIP settings screen SIP Port In the SIP Port field enter the number of SIP local port. The default value is 5060. Local port number could be set at will, as long as it doesn’t conflict with the other port numbers in the system. SIP Proxy In the SIP Proxy field enter the address and port number of the Proxy.

  • Page 31: Registration Expires(S)

    SIP Domain Name In the SIP Domain Name field enter the SIP domain name. If the field is left empty, GT8 will use the address of the Proxy as the domain name. It is recommended that you do not use a private network IP address in this field.

  • Page 32: Network Configuration

    Function Description In the Password field enter soft-switch authentication password, which can be digits or characters. The password is case sensitive. If registered as Per Gateway Reg or Per Gateway Auth you need to set this parameter; if registered as Per Endpoint, you do not need to set this parameter.

  • Page 33: Gateway Ip Address

    In the Hostname field, enter the GT8 gateway name. You can use your own naming convention according to your network setup. Gateway IP Address In the Gateway IP Address field enter the default GT8 IP address if you have not enabled DHCP services. DHCP In the DHCP field select on or off to indicate to use DHCP or not to assign IP addresses and other network settings.

  • Page 34: Dns Primary Server

    In Time Alternate Server field enter the IP address of your alternate Time server. Timeout In the Timeout field enter the time (in minute) allowed to locate the Time server. If the server is not located within the time allowed, GT8 will try to locate it again. Interval www.greatel.net...

  • Page 35: Time Zone

    Function Description In the Interval field, enter the time interval (in minute) at which GT8 will synchronize its time with the Time server. Time Zone In Time Zone field select the GT8 location. The following is the options are available for this parameter: Midway,...
  • Page 36 Function Description Figure 0-9 Feature Code Setting Screen Enable All Forwarding This allows the customer to define and enable forwarding all calls function. The default function key is *60. To use this feature the customer must first sign up for the call forwarding service. Disable All Forwarding This feature allows the customer to disable the All Forwarding service.
  • Page 37 Function Description Go off hook → Dial *60 → Upon hearing the forwarded number dial # to end → Go on hook. c) To disable: Go off hook → Dial #60 → Go on hook. Enable Busy Forwarding This allows the customer to enable the forwarding feature when the line is busy.
  • Page 38 Function Description Go off hook → Dial *62 → On hearing the dialing tone, dial 5618881680 → Dial # to end → Go on hook. b) To verify, Go off hook → Dial *62 → On hearing the forwarded number go on hook.
  • Page 39 Function Description Go off hook → Dial *74 → On hearing the dialing tone, dial 20 plus 5613221680 → Dial # to end. b) To verify, Go off hook → Dial *74 → On hearing the dialing tone, dial 20 plus * to end →...

  • Page 40: Set Up All Forward

    Function Description b) To verify, Go off hook → Dial *80 → On hearing the distinctive ringing go on hook. c) To disenable, Go off hook → Dial #80 → Go on hook. Listen Fashion Ring The default function key is *88. To use: Go off hook →...

  • Page 41: Set Up Busy Forward

    Function Description Set up Busy Forward Click the Supplementary link on the left side of Figure 4-1. Then click Busy Forward. The Busy Forward Settings screen displays, as shown in Figure 4-11: Figure 0-11 Busy Forward Settings Screen This screen is used to enter forwarding numbers for Busy Forward feature subscribers or to display during operation the forwarding numbers entered by the end users.

  • Page 42: Set Up Fashion Ring

    Function Description sign up for the Call Forwarding services and when they enable this feature using the function key. Set up Fashion Ring Click the Supplementary link on the left side of Figure 4-1. Then click Fashion Ring. The Fashion Ring Settings screen displays, as shown in Figure 4-13: Figure 0-13 Fashion Ring Settings Screen This screen is used to enter distinctive ring serial numbers for...

  • Page 43: Dialing Plan And Routing Table

    Function Description This screen is used to enter hotline numbers for Hotline feature subscribers. End users that have singed up for Hotline or Delay Hotline services have access to this feature. For example, FXS Line 1’s hotline number is set up as1680. If the end user of Line 1 has signed up for Hotline services, when he goes off hook the phone will automatically dial 1680.

  • Page 44: Set Up The Routing Table

    Function Description GT8 has in its default Dialing Plan most of the domestic digit map rules. You do not have to re-configure them. You can add new rules when necessary. The following is an illustration of the common rules: Table 0-2 Common Digit Map Rules Any single digit between numbers 0 to 9.
  • Page 45 Function Description Figure 0-16 Routing Table Screen Routing table serves two main functions: number swapping and route exchange. The table is executed from top to bottom. Number swapping always has advantage over route exchange. A routing table can have a maximum of 100 entries. Note: The routing table is empty by default.
  • Page 46 Function Description equals all numbers; xx equals all two-digit numbers; 12x equals all three-digit numbers that start with 12 • Action defines the processing method and the actual information that has been processed. It can have three values: KEEP: Keep means to keep the number. Another number goes after it.
  • Page 47 Function Description from an FXS that starts with 88, replace it with 2682000 REPLACE: cross replacement, means to replace the number corresponding to the called number or calling number For example, 12345 REPLACE CPN-1/8621 This means remove the last one digit then add 8621 at the end of the calling number corresponding to the called number from an FXS that starts with 12345 CPN13...
  • Page 48 Function Description CPNn: n means how many digits will be replaced. If n is 0, means insert If n larger than the quantity of whole digits, means replace all. If there is no number at the end of “/”, means remove If there is no number at the front of “/”, means insert, the gateway will insert 0 automatically.
  • Page 49 Function Description CODEC means the encoding and decoding method of the CPN/CDN, followed by the actual name of the codec. For example PCMU/20/16. PCMU is the codec method; 20 meaning every 20ms; 16 is the length of echo cancellation. If echo cancellation is not enabled, a 0 will append at the end automatically (like PCMU/20/0), indicating echo cancellation is disabled.
  • Page 50 Function Description The search for a matching number follows the principle of “shortest and quickest”. For example, x equals all numbers; xx equals all two-digit numbers; 12x equals all three-digit numbers that start with 12 • Action should be ROUTE, meaning to route a call. •...

  • Page 51: Set Up The Fxs Ports

    Set up the FXS Ports This is applicable only to GT8 that have FXS ports. One GT8 can have up to eight FXS lines. Each line is configured the same way. You can customize the configuration according to real life situation.

  • Page 52: Phone Number

    Function Description Figure 0-17 FXS Settings Screen Phone Number In Phone Number field enter the phone number that is set up in section 4.3. Registration www.greatel.net - 52 -...

  • Page 53: Display Name

    Function Description In Registration field, select on (to register) or off (not to register). Display Name In Display Name field enter the content to display in the outgoing calls. You can enter up the 30 characters. FXS lines that have name display capability can display what is entered here.

  • Page 54: Cid On Call Waiting

    Function Description CID On Call Waiting Select on (enable) or off (disable). Anonymous Call Select on (enable) or off (disable). Hotline Select on (enable) or off (disable). Hotline Delay Select on (enable) or off (disable). Do Not Disturb Select on (enable) or off (disable). Speed Dial Select on (enable) or off (disable).

  • Page 55: Ddi Line

    Function Description DDI Line Select on (enable) or off (disable) to use the Direct Dialing In (DDI) function. Default is off. Maintenance Select on or off to indicate to turn the power on/off for this line. Default is off. Call Control Reset Caller Control (Calling Party Control) is to indicate that the "Calling Party"...

  • Page 56: Speed Dial List

    Set up the FXO This is applicable only to GT8 that has FXS ports. One GT8 can have up to four FXO lines. Each line is configured the same way. You can customize the configuration according to real life situation. The following is a sample configuration.

  • Page 57: Phone Number

    Function Description Figure 0-18 FXO Setting Screen Phone Number In Phone Number field enter the phone number that is set up in section 4.3. Registration In Registration field, select on (to register) or off (not to register). Display Name In Display Name field enter the content to display in the outgoing calls.

  • Page 58: Originating Restriction

    Function Description Originating Restriction In Originating Restriction field, select on (to indicate the line can only receive calls but not initiate calls) or off (no restriction). Hotline In Hotline field, select on (enable) or off (disable). Dialtone In Dialtone field, select on (enable) or off (disable). This function is disabled once the Hotline function is on.
  • Page 59 Function Description Figure 0-19 System Optional Screen Sys Log Server This is the IP address of the Event Log Server. It is used for remote debugging. You do not need to set it under normal circumstance. Debug Log Server This is the IP address of the Debug Log Server. It is used for remote debugging.
  • Page 60 Function Description In Country ID field, select the country in which the gateway is operated，and gateway will adopt different disposals according to different countries' standards. Forwarding Number Mode In Forwarding Number Mode field, use the pull down menu to select Calling Party Number or Forwarding Number.
  • Page 61 Function Description If gateway is within the private network and the network outside the is public, you can map the IP obtained from SDP message to a fixed IP. No default value Note: You can search the IP address from the following websites: www.ipchicken.com;...

  • Page 62: Advanced Fxo Options

    Function Description Advanced FXO Options Click the Advance Config link on the left side of Figure 4-1. Then click FXO Config. The FXO Optional screen displays, as shown in Figure 4-20: Figure 0-20 FXO Optional Screen FXO Gain To PSTN Enter the volume increase into the PSTN.
  • Page 63 FXO sends out digits. The default is 100ms. Busy Tone Repetition In Busy Tone Repetition field, enter a number from 2 to 5. This is the number of times GT8 keeps checking busy tone before it takes further action. Busy Tone Frequency 1 In Busy Tone Parameter 1 field, enter one of the signal frequency parameters (IS is 61485).

  • Page 64: Advanced Fxs Options

    Function Description In Busy Tone Parameter 2 field, enter another signal frequency parameter (IS is 0). The formula is: frequency=[65536*cos(2*PI*f/8000)] where the value of frequency is an integer and f is the actually frequency value. Busy Tone On Time In Busy Tone On Time field, enter the time one busy tone will last. This time should be determined by the equipment the FXO is connected to.
  • Page 65 Hook Status Change In the Hook Status Change field, enter a number from 20 to 1000. This is the hook status change time. If less than the time set here, GT8 will ignore this status change. Reverse Battery Type www.greatel.net...

  • Page 66: Advanced Ip Options

    Function Description Default value is Outgoing. Two options are available for this parameter: • Outgoing: starting the collect call billing after outgoing call is connected; • Both: starting the collect call billing after incoming or outgoing call is connected). Reverse Battery Timeout Set the delay from the ringing to sending the collect call billing signal.
  • Page 67 Function Description Figure 0-22 IP Optional screen RTP Jitter Param1 Default is 50. It is recommended that you do not change this value. RTP Jitter Param2 Default is 3. It is recommended that you do not change this value. 2833 Packet Type www.greatel.net - 67 -...
  • Page 68 Function Description In the 2833 Packet Type field enter a value from 97 to 127. This parameter is used for transmitting 2833 packet type. The default load type is 97. Reserved Payload Type Enter a value from 97 to 127. This is the RTP load type when using the iLBC codec.
  • Page 69 Function Description Set whether to apply RTP gain when sending and receiving. Default value is: Yes. • Yes: Enable. • No: Disable. Global Connection Setup whether to obtain far end IP address from SDP global connection. Default value is No. •...
  • Page 70 Function Description In the VAD Active field if you select yes, the speech packet will not be sent out in the mute of the call, and noise is added to the speech stream to replace the mute. It is recommended that you set this parameter to yes to save the network bandwidth.
  • Page 71 Function Description In the T.38 Redundancy Frame Numbers field set the number of the T.38 data frame in each T.38 data packet (the effective range is 1 to 6). T.38 Change to UDP Port In the T.38 Change to UDP Port field select yes or no to indicate if the gateway will change the UDP port when switching to T.38 mode.

  • Page 72: Advanced Sip Options

    Function Description Setup T.38 jitter buffer value. Default value is 250ms. Valid value range is 40 ~ 1000. T.38 Receive Gain This sets the T.38 receiving gain value. Default value is 1. Valid range is 0 ~ 4. • Values 0 and 1: mean -6dB and -3dB enhancement, respectively.
  • Page 73 Function Description Figure 0-23 SIP Optional screen Response Default Port Using Received Port In the Response Default Port Using Received Port field use yes or no to indicate to use received port as the response port or not. yes means to use the received port as the response port; no means to use the default port 5060.
  • Page 74 Function Description CPN From Request Line In the CPN From Request Line field select yes or no. yes means to get the called number from Request Line; no means to get the called number from To field. Response Do Not Check Via In the Response Do Not Check Via field use yes or no to indicate whether to ignore the Via field or not.

  • Page 75: Backup Agent Config

    Function Description Set whether Call ID in SIP message to use server host name or to use IP address. Default value is No. • Yes: Use host name. • No: Use an IP address. SIP PRACK The SIP PRACK is used to require the receiver to return PRACK thus to provide a reliability mechanism for provisional responses.

  • Page 76: Border Proxy Config

    Function Description • Address can be either IP address or domain name. If using domain name, the user must set DNS server parameters in Network Settings page and enable the DNS service. • Sample format of fully qualified addresses: 202.202.2.202:2727; callagent.com:2727.
  • Page 77 Function Description Set IP address and port number for border agent. No default value. Separate IP address and port number with a “:”. Local Port Local port number for border agent. Default value is: 4660. Local port number can be anything, as long as it does not conflict with port numbers for other equipments.

  • Page 78: Ems Optional

    Function Description EMS Optional After log in, click Advanced Config > EMS Config from the left pane. The following displays: Figure 0-25 EMS Optional screen Primary EMS Server Enter primary EMS Server IP address if you want to use EMS service. Secondary EMS Server Enter secondary EMS server IP address.
  • Page 79 Function Description After log in, click Advanced Config > Bill Config from the left pane. The following displays: Figure 0-25 IMSOptional screen Bill Server In Bill Server field enter the IP address and the port of the bill server. Call Flag Select Yes or No to let the gateway work or not if the gateway lose communication with bill server.
  • Page 80 Function Description Select on (to invoke) or off (not to invoke) to indicate to turn on or not the charging function of RADIUS server. RADIUS Start Select on or off to indicate whether or not to transmit the initial RADIUS record when the charging function of RADIUS client or server is invoked.

  • Page 81: Log Information

    IP address followed by RTP port number. remote local the local RTP port number. codec encoding and decoding. GT8 support the following codec: G729A/20,iLBC/30,G723/30,GSM/20,PCMU/20,PCMA/20 state call state, which indicates the current state. It can be SEND; DELIVERED;...

  • Page 82: Resources Information

    Function Description Resources Information Click Log Info link on the left of Figure 4-1. Then click Resource Info. The Resource Info page displays. In this page, you can see the logon information (including the IP address and level of the logon user) of all WEB users, SIP registration information, telephone information and RTP information.

  • Page 83: Error Information

    Function Description Error Information Click Log Info link on the left of Figure 4-1. Then click Error Log. The Log Info page displays. You can check all the errors, logons, exits and overtime web access information in this page. Figure 0-29 Error Info screen Startup Information Click Log Info link on the left of Figure 4-1.

  • Page 84: System Tools

    Figure 0-31 Restore Factory setting screen Click the Confirm button to restore default factory settings. GT8 gateway has most parameters set to commonly used default value. In most cases, customers do not have to set the parameters for themselves. See Index for details about factory default settings.

  • Page 85: Change Password

    Function Description Figure 0-32 Software Update screen FTP Server Please enter the IP address or domain name of the FTP server which is used to update the software. Filename Please enter the filename of the software version which you need to update;...

  • Page 86: Restart Gateway

    Function Description Figure 0-33 Change Password screen Only an administrator has the authority to changes password. The first three fields are used to change administrator password. Please input the old password in the Old password field, and input the new password in the New password field.

  • Page 87: Appendix

    PPENDIX Factory Default Settings Default System Parameter Settings RTP Port Min：10010 RTP Port Max：10030 Digit Timeout (Second) ：12 Inter Digit Timeout (Second) ：12 Critical Digit Timeout (Second) ：5 DTMF Transmit Mode：AUDIO Default Codec：PCMU/20, G729A/20, iLBC/30, G723/30, GSM/20, PCMA/20 Echo Cancellation：on Default MGCP Settings MGCP Port：2427 Default Package：L, D, G...
  • Page 88 Function Description SIP Port：5060 Registration Expires (Second) ：30 Authentication Mode：Per Endpoint Default Network Parameter Settings Gateway IP Address：192.168.2.1 DHCP：on Local IP Address：192.168.2.218 Subnet Mask：255.255.255.0 DNS：off PPPoE：off Preference TIME Server：192.43.244.18 Alternate TIME Server：198.60.22.240 Timeout (Minute) ：10 Query Interval (Minute) ：120 Default FXS Settings Forbid to Call：off Call Waiting：off Call Holding：off...
  • Page 89 Function Description Fashion Ring Max：20 SNMP Port：2700 SNMP Trap Port：162 NAT Keep Alive：no STUN：off RADIUS Client Side：off RADIUS Server Side：off RADIUS Start：off RADIUS Unsuccess Stop：off Timeout (Second) ：3 Retries：3 FXO Advanced Default Settings FXO Gain：-3.5 FXO Relay Time (ms) ：400 Digit on Time (ms) ：100 Digit off Time (ms) ：100 Buy Tone Repetition：2...

  • Page 90: Glossary

    Function Description SIP Advanced Default Settings Response Default Port Using Received Port：no Response Default Port Using Proxy Port：no RTP Port Mapping：no Replace 18x with 180：no CPN from Request Line：no Response Do Not Check Via：yes Use the Full Domain Name Information during Registering：yes Keep the Original Contact Information：no SIP VIA using NAT Information：yes SIP TO adopt Domain Name Information：yes...

  • Page 91: Dtmf（Dual Tone Multi-Frequency

    Function Description data delivery in a manner scalable to large multicast networks, and to provide minimal control and identification functionality. RTP and RTCP are designed to be independent of the underlying transport and network layers. The protocol supports the use of RTP-level translators and mixers.

  • Page 92: Speech Codec

    Function Description • Audio: Voice data transparent transmit mode. • 2833: A special RTP packet. PT field of the header indicates this is a DTMF packet. See FTC 2833 for details. • INFO: Information transmission mode. Optional way of DTMF transmission. As in SIP messages, use INFO to indicate a DTMF signal.

  • Page 93: Mgcp (Media Gateway Control Protocol)

    Function Description cancellation is done using either echo suppressors or echo cancellers. MGCP (Media Gateway Control Protocol) Media Gateway Control Protocol (MGCP) is used for controlling telephony gateways from external call control elements called media gateway controllers or call agents. A telephony gateway is a network element that provides conversion between the audio signals carried on telephone circuits and data packets carried over the Internet or over other packet networks.

  • Page 94: Mgcp Call Agent

    Function Description The first four commands are sent by the Call Agent to a gateway. The Notify command is sent by the gateway to the Call Agent. The gateway may also send a DeleteConnection. The Call Agent may send either of the Audit commands to the gateway. The Gateway may send a RestartInProgress command to the Call Agent.

  • Page 95: 401/402 Response Code

    Function Description Call Agent is comprised of the call control "intelligence" and a media gateway boasting the media functions, for example conversion from TDM voice to Voice over IP. Media Gateways feature endpoints for the Call Agent to create and manage media sessions with other multimedia endpoints.
  • Page 96 Function Description network. Signaling allows call information to be carried across network boundaries. Session management provides the ability to control the attributes of an end-to-end call. SIP provides the capabilities to: • Determine the location of the target end point—SIP supports address resolution, name mapping, and call redirection.
  • Page 97 Function Description UAC or a UAS depends on the UA that initiated the request. • From an architecture standpoint, the physical components of a SIP network can be grouped into two categories: clients and servers. Figure 1-1 illustrates the architecture of a SIP network.
  • Page 98 Function Description Users in a SIP network are identified by unique SIP addresses. A SIP address is similar to an e-mail address and is in the format of sip:userID@gateway.com. The user ID can be either a user name or an E.164 address. Users register with a registrar server using their assigned SIP addresses.
  • Page 99 Function Description Transfer Protocol (RTP) is used for the communication between the caller and the callee. Using a Redirect Server If a redirect server is used, the caller UA sends an INVITE request to the redirect server, the redirect server contacts the location server to determine the path to the callee, and then the redirect server sends that information back to the caller.

  • Page 100: Proxy

    Function Description Proxy Proxy is the kernel of SIP, implementing message transfer functions. Registrar When a client powers on, it will tell network its IP address in order to be found. We call this procedure “register”. The server that accepts this request is called “registrar”.

  • Page 101: Time Server

    Function Description Time Server Time Server provides time calibration, control, and synchronization for equipments running in the network. Caller ID Detecting Using FXO to detect caller ID from the PSTN and use this number as the originating number for the IP call. SNMP (Simple Network Management Protocol) The Simple Network Management Protocol (SNMP) is an application layer protocol that facilitates the exchange of management...

  • Page 102: Udp Port

    Function Description UDP Port Port has two meanings in network technology. One is the physical port, via which other equipments can be connected. The other is the logical port, interfacing with different network protocols. Logical port can be of two types as well, depending what protocols we are talking about.

  • Page 103: Radius（Remote Authentication Dial In User Service

    Function Description voice (VoIP) and videoconferencing. The STUN client sends requests to a STUN server, which is typically hosted by the service provider. Unlike application layer gateways (ALGs) and Middlebox Communications (MIDCOM), which also support two-way communications through NATs, STUN requires no changes to the NAT.

  • Page 104: Signal Mode

    Function Description to an analogous measure of resistance to an alternating effect, as the resistance to vibration of the medium in sound transmission. Signal Mode Signal mode refers to inserting a silence signal periodically into the voice stream. Standard used in China specifies “450 Hz, 350ms ON + 350ms OFF”, means signal cycle is 700ms;...

  • Page 105: Symmetric Rtp

    Function Description This is primarily used to resolve problems of accessing networks (for example, ADSL, Cable Modem, Ethernet, Proxy, etc.) using a faux/hidden IP or internal IP. It enables endpoints to access the network without having to change network settings. For IAD using public network and real IP address, voice proxy is not needed.

  • Page 106: Tos (Type Of Service)

    Function Description excitation signal for the high rate coder is Multipulse Maximum Likelihood Quantization (MP-MLQ) and for the low rate coder is Algebraic-Code-Excited Linear-Prediction (ACELP). TOS (Type of Service) TOS has 8 bits reserved to the service type in the IP datagram. 0-2 means precedence.

  • Page 107: Request Line

    Function Description Request Line Request Line and Status Line are one of the RFC 822[9] defined information formats to carry out real time transmission task. Request line uses a method field right after the URI and protocol version fields to indicate request type, and ends with CRLF (Carriage Return or Line Feed).

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