We would like to get to a point where t.38 faxing is supported on all of our MGCP gateways. We seem to keep hiting bugs that make such a deployment difficult at best.
Two problems we have run into:
causes mgcp configuration be be cleared anytime a new config is pulled from Call Manager via either a reload or the ccm-manager config command. Bug was supposed to be resolved by CUCM 7.1.2 but still seeing issue with 18.104.22.16800-5 and CME IOS 12.4(24)T2.
Second major issue:
CSCsy29533 - MGCP T38 Fax Relay is disabled even when it is configured.
have not been able to retest with CME IOS 12.4(24)T2 or 15.0.1M.
Does anyone have a environment where T.38 is working reliably?
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.