I have about 15 different fax machines connected to a VG224 (various models). For some reason only the Brother 3800 models can not send (but they can receive).
The VG224 is configured with MGCP and the PSTN gateway is running H323. I've tried setting the fax rate in the MGCP config and pass-though on the H323 config. Does anyone have any other suggestions? Here are the configs.
voice-port range 2/0 - 23
ccm-manager redundant-host 10.10.10.1
ccm-manager config server 10.10.10.1
ccm-manager config dialpeer-prefix
mgcp call-agent 10.10.10.2 2427 service-type mgcp version 0.1
We see a lot of issues on later model faxes defaulting to a mode called SuperG3, which uses some T30 fax signaling modes, V8 modem call control signaling and V34bis modem tones to pass fax traffic at 33.6Kbps. It tends to mess up T38 fax relay for starters (on all brands of gear ... not just Cisco!).
Often the best thing is to go into config mode on the fax and find the config settings for "ECM - Error Correction Mode" and/or "V34/SuperG3 mode" and set them both to OFF. These have the effect of forcing the fax to go back to 'normal' T30 fax mode, which interoperates with the majority of fax machines.
Might be worth giving this a try on the Brother fax machine.
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...