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Contents

 
  1. Introduction
  2. About Mediatrix 41xx Series FXS Gateways
  3. Application Scenario
  4. Versions Supported
  5. Mediatrix FXS (41xx) Units Configuration
  6. Mediatrix FXO (1204) Unit Configuration
  7. Advanced Settings
  8. References

Introduction

This document outlines the configuration steps to set up Mediatrix 41xx series FXS gateway and the Mediatrix 1204 FXO gateways in a remote office environment. It assumes that you have a softswitch (or SIP server) properly installed in the network.

About Mediatrix 41xx Series FXS Gateways

The Mediatrix® 41xx Series products are high-quality and cost-efficient VoIP gateways connecting larger branch offices and multi tenant buildings to an IP network, while preserving investment in analog telephones and faxes.
The Mediatrix® 41xx access devices allow Service Providers to deploy rapidly and economically their solutions in medium-size premises and they are the ideal solution for branch office connectivity to larger private networks. The following Mediatrix 41xx models are available:

  • 4108 – Enterprise 8-port FXS gateway
  • 4116 – Enterprise 16-port FXS gateway
  • 4124 – Enterprise 24-port FXS gateway

Benefits of using the Mediatrix 41xx FXS gateways over other FXS solutions:

  • Superior Voice quality with dedicated DSP hardware
  • Adaptive Jitter Buffer, G.168 Echo Cancellation
  • T.38 Fax Relay support
  • Easy-to-use web interface

CN286 P3 1.png

Application Scenario

This is a typical deployment scenario of Mediatrix FXS and FXO gateway in a remote office VoIP environment. The gateways provide the following functionalities:
FXS Gateway (41xx) – connectivity to analog phones and fax machines, analog trunking to legacy PBX/KSU
FXO gateway (1204) – PSTN access, local 911
Softswitch or IP PBX – 3rd Party device (or the Mediatrix IP Communication Server IPCS, which has lesser functionalities than a full-blown softswitch) that provides:

  • Call routing, Dial Plan
    • Including routes to local PSTN gateways
  • Telephony services (voicemail, call forwarding etc)
  • SIP Endpoints management
  • Auto-Attendant

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Versions Supported

This configuration note was written and validated using the following platforms and versions.

  • Mediatrix 1204: SIP 5.0.17.104
  • Mediatrix 41xx: SIP 5.0.18.113

The following configuration notes are not a substitute for the Mediatrix Administration Documentation for Mediatrix analog products. Please have the following manuals available for reference:

  • Mediatrix 1204, 4108, 4116, and 4124 SIP Reference Manual
  • Mediatrix 1204, 4108, 4116, and 4124 SIP Quick Start
  • Mediatrix Unit Manager Network Administration Manual
  • All relevant Softswitch Manuals

Mediatrix FXS (41xx) Units Configuration

  • View the status of the Mediatrix 41xx.
  • Set numerous parameters of the Mediatrix 41xx.

Mediatrix recommends that you use the latest version of the Microsoft® Internet Explorer web browser to properly access the web interface. To use the web interface configuration:
1. In the web browser’s address field, type the IP address of the Mediatrix 41xx (if you have performed a recovery mode, this is 192.168.0.1) The unit’s IP address can be found by dialing *#*0 from a phone connected to port 2 or above
2. Enter the default login name admin and password 1234.
CN286 P5 1.png

3. The system information screen then appears, giving information about the firmware version, hardware revision, system up-time and MAC address.
CN286 P6 1.png

Network Parameters Configuration

Network parameters are located in the Management. – Network Settings page.
1. Click Management and Network Settings to go the Network Settings web page.
CN286 P6 2.png

2. In the IP Address Source option, select DHCP or Static.
DHCP is the default selection
3. If you are using a Static IP address, select Static and enter the IP address, subnet mask, default router and DNS server IP in the proper fields.
4. If SNTP is required, set the SNTP Enable option to Enable and enter the appropriate SNTP server IP address in the SNTP Host field.
5. Click Submit to apply the changes.

SIP Configuration

The SIP Configuration usually includes two portions:

  • Information about the signalling servers, e.g., SIP proxy, SIP registrar, port number, etc.
  • SIP account setting (aka phone number) for each port; the account should be configured on the softswitch first.

The following are the steps to configure the SIP parameters:
1. Click SIP and Configuration to go the SIP Configuration web page.
CN286 P7 1.png

2. Choose Static as the SIP Server Source.
3. In the Registrar Host and Proxy Host fields, enter the address of the softswitch signalling server.
4. In the User Name (equivalent to the phone number) column, enter a user name as defined in the softswitch. The port will use this as the username to register with the softswitch.
5. You can also enter a Friendly Name for each port.
6. Click Submit to apply the changes.

SIP Authentication
The next step is to enter SIP authentication information for each port.
1. Click SIP and Authentication to go to the SIP Authentication web page.
You can enter up to 5 credentials for each port, but only one is needed in most cases.
CN286 P8 1.png


2. Type the proper information the Realm field; the Realm can be found from the softswitch vendor. In this example, enter asterisk.
3. Enter the Username 101 and Password num101 for port 1.
4. Click Submit to save the changes.
CN286 P8 2.png

Codec and DTMF Configuration
1. Click Telephony and Codec to go to the Codec page.
Codec and DTMF settings are configured on a port-by-port basis.
CN286 P9 1.png

2. Set the DTMF Transport drop-down menu according to the DTMF transport mode you have defined in the softswitch.

  • If you are using rfc2833: set the parameter to outOfBandUsingRtp.
  • If you are using SIP Info, set the parameter to outOfBandUsingSignalingProtocol.
  • If you are sending DTMF inband, set the parameter to inBand (default). Inband is not recommended if you are intending to use a codec other than G.711.

In this case, OutOfBandUsingRTP is used.
CN286 P10 1.png

3. Set the Payload type field to match your setting in the softswitch and other VoIP devices. In this example, the payload type101 is used.
4. Set your preferred codec. G.711 PCMU is the default codec.
5. Set your codec-specific parameters, e.g., Comfort noise, Silence Suppression/Voice Activity Detection (VAD), packetization time, etc.
6. Enable (default) / Disable T.38 Fax if you are not using it in your VoIP setup.
CN286 P10 2.png

7. Click Submit to apply the changes.

Done!
Reboot the gateway.
1. Click Advanced and Reboot to go to the Reboot page.
CN286 P11 1.png

2. Click the Reboot button on the page that displays.
CN286 P11 2.png

The changes you just made will become effective after the unit reboots.
After the unit comes back, observe that the Ready LED should now light up (or blink if not all the ports are configured and registered with the SIP server). You can then hook up a telephone and make some test calls with the Mediatrix 41xx.

Mediatrix FXO (1204) Unit Configuration

Similar to the 41xx series, the Mediatrix 1204 FXO gateway also features an embedded Web server. Most of the commonly used parameters are accessible from the web interface. The Mediatrix Unit Manager Network (UMN) software is needed if access to full unit configuration is required. The UMN can be downloaded from the Unit Manage Page
 
It has a default 3-units limit upon installation. This will suffice for most configurations. Additional unit license can be purchased. Please contact your Mediatrix reseller for more details.

Using the Web interface
The web interface may be used to:

  • View the status of the Mediatrix 1204.
  • Set numerous parameters of the Mediatrix 1204.

Mediatrix recommends that you use the latest version of the Microsoft® Internet Explorer web browser to properly access the web interface. To use the web interface configuration:
1. In the web browser’s address field, type the IP address of the Mediatrix 1204 (if you have performed a recovery mode, this is 192.168.0.1).
2. Enter the default login name admin and password 1234.
CN286 P12 1.png

3. The system information screen then appears, giving information about the firmware version, hardware revision, system up-time and MAC address.
CN286 P13 1.png

Network Parameters Configuration
Network parameters are located in the Management – Network Settings page.
1. Click Management and Network Settings to go the Network Settings web page.
CN286 P13 2.png

2. In the IP Address Source option, select DHCP or Static.
DHCP is the default selection.
3. If you are using a Static IP address, select Static and enter the IP address, subnet mask, default router and DNS server IP in the proper fields.
4. If SNTP is required, set the SNTP Enable option to Enable and enter the appropriate SNTP server IP address in the SNTP Host field.
5. Click Submit to apply the changes.

SIP Configuration
The SIP Configuration usually includes information about the signalling servers, e.g. SIP proxy, port number, etc. Note that unlike the 41xx FXS gateway, SIP Registration is not needed for the 1204.
1. Click SIP and Configuration in the top menu to go the SIP Configuration web page.
CN286 P14 1.png

2. In the SIP Configuration section, choose Static as the SIP Server Source.
3. In the Proxy Host field, enter the address of the softswitch signalling server.
4. In the User Name (equivalent to the phone number) column, enter the phone number of the POTS line to which the port is connected. This is optional.
5. Click Submit to save the changes.

Codec and DTMF Configuration
1. Click Telephony and Codec to go to the Codec page.
Codec and DTMF settings are configured on a port-by-port basis.
CN286 P15 1.png

2. Set the DTMF Transport drop-down menu according to the DTMF transport mode you have defined in the softswitch:

  • If you are using rfc2833, set the parameter to outOfBandUsingRtp.
  • If you are using SIP Info, set the parameter to outOfBandUsingSignalingProtocol.
  • If you are sending DTMF inband, set the parameter to inBand (default). Inband is not recommended if you are intending to use codec other than G.711.

In this example, OutOfBandUsingRTP is used
3. Set the Payload Type field to match your setting in the softswitch and other VoIP devices. In this example, the payload type 101 is used.
4. Set your preferred codec. G.711 PCMU is the default codec.
5. Set your codec-specific parameters, e.g,. Comfort noise, Silence Suppression/Voice Activity Detection (VAD), packetization time, etc.
6. Enable (default) / Disable T.38 Fax if you are not using it in your VoIP setup.
CN286 P16 1.png

7. Click Submit to apply the changes.

Done!
Reboot the gateway.
1. Click Advanced and Reboot to go to the Reboot page.
CN286 P16 2.png

2. Click the Reboot button on the page that displays.
CN286 P16 3.png

The changes you just made will become effective after the unit reboots.
After the unit comes back, you can then hook up the PSTN lines and make some test calls with the Mediatrix FXO 1204 gateway. When you dial into the 1204 from the PSTN, you’ll get a second dial tone. You can then dial any IP extension numbers to reach internal phones. If you want to forward all inbound calls into an auto-attendant, please check out Automatic Call Forwarding in the Advanced Setting section.

Advanced Settings

* Star Code and # Key Dial Map
By default, the Mediatrix 41xx dial map does not allow * and # keys. To do that, you must add the following dial map:

  • x.# - for speed dialling, e.g. 267#, call will be dialled right away once the # key is hit
  • *xx – for * code, e.g. *69
  • #xx – for # code, e.g. #21

Here the first dial map is (*xx|#xx). The second dial map is x.# with # removed before the number is sent to Asterisk.
CN286 P17 1.png

Local 911 Call Using the Mediatrix Emergency Gateway Feature
The Emergency Call service (also called urgent gateway) allows a “911”-style service on the Mediatrix 41xx. It allows a user to dial a special digit map resulting in a message being sent to a specified urgent gateway (the Mediatrix 1204 in this case), bypassing the softswitch and any other intermediaries.
If enabled, whenever the user dials the specified digit map, a message is sent to the target address.
In this example, when the user dials 911 or *60, a 911call is dialled out of the PSTN gateway (a Mediatrix 1204 with IP address 192.168.1.102). All the configuration is done on the 41xx only:
1. Click Advanced and select Emergency.
2. Set the Emergency Call Activation choice to Enable.
3. Enter the Emergency Call Target. This is the destination SIP URI; it is in the format sip:911@192.168.1.102, with 911 being the number intended to be dialled out to the PSTN, and 192.168.1.102 being the local PSTN gateway.
4. Enter the Emergency Call Digit Map. These are the digits the user dials in order to trigger the emergency call; in this example, the user can either dial 911 or *60 to call emergency. If only 911 is needed, just put 911.
5. Click Submit to complete the process.
CN286 P18 1.png

Automatic Call Forwarding to an Auto-Attendant for all Inbound PSTN Calls via the 1204
You’ll need the Mediatrix Unit Manager Network in order to access the Automatic Call feature on the 1204. The Automatic Call function allows all inbound PSTN calls to the 1204 being automatically forwarded to a pre-defined number. Without this being set, the caller will hear a second dial tone instead.
1. In the UMN, right-click Telephony Attributes and select Edit.
CN286 P19 1.png

2. The Telephony Attributes window pops up. Set the Automatic Call field to Enable and put your auto-attendant phone number in the Automatic Call Address field. Click OK to complete the process.
CN286 P19 2.png

Syslog Server for Troubleshooting
For troubleshooting purpose, syslog of various levels can be enabled on the Mediatrix 41xx. In this example, Syslog messages are sent to the syslog server at 192.168.1.100, the syslog level is set to Debug.
CN286 P20 1.png