Need help with Fax relay for ccm 4.1 mgcp and 3825 fxs port
I have a 3825 Router with CallManager 4.13 with MGCP.
I'm having an issue with my 1 fax machine. I can receive fax, but cannot sent out fax. Getting fast busy. It feels like it is a route pattern issue, but I cannot figure it out. I have a default 9.@ pattern. The fax machine is connected to an fxs port 0/0/0. I have a translation pattern with 777 to go to this fax machine port vie H.323 gatway pointing to the router itself. From the fax machine, I can call internal numbers without any issue, just external numbers that it is having issue. I've also tried using the T.38 fax relay, but it only address receiving fax, not sending.
Re: Need help with Fax relay for ccm 4.1 mgcp and 3825 fxs port
Cisco IOS Software Release 12.2(11)T2 makes the mgcp fax t38 gateway force command available. This provides a way to enable gateway controlled T.38 fax relay between a MGCP gateway and another gateway, even if the capability to use T.38 and Named Signaling Events (NSEs) cannot be negotiated by the MGCP call agent at call setup time. For more information on this command, refer to Update to mgcp fax t38 Command.
Unfortunately, this command is not available on the MRP since the Cisco IOS T-train is not supported. Therefore, make use of T.38 by putting this configuration on the MRP:
voice service voip
fax protocol t38 ls-redundancy 0 hs-redundancy 0
h323 call start fast This configuration forces the fax relay to use T.38 standards. However, it requires the use of H.323 rather than MGCP.
If you want to continue using MGCP, Cisco proprietary fax relay is required and works fine for Cisco CallManager and Cisco gateways.
Note: The mgcp fax t38 inhibit command is required for operation with Cisco CallManager version 3.1.2c, but is optional for version 3.1.3a and later. This command prevents the MRP or Analog Station Interface (ASI) from sending T.38 fax gateway information to the Cisco CallManager. This command is also required for Cisco Base Transceiver Station (BTS) 10200 versions earlier than 3.0.
For more information on resolving fax relay, refer to Fax Relay Troubleshooting Guide.
Cisco AVVID Gateway Support for Fax Relay and Fax Pass-Through
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
CUCM Database Replication is an area in which Cisco customers and
partners have asked for more in-depth training in being able to properly
assess a replication problem and potentially resolve an issue without
involving TAC. This document discusses the bas...