Hi, I remember to have read here about a similar issue with a rural old switch and the need to configure something in a special way.
Anyway, another customer I know, e&M wink required timing wait-wink 2000 (I think) under voice port. In any case please send output of sh controllers t1, and check call progress with "debug vpm signal". I should have somewhere the traces from above customer to compare with.
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.