I have installed a UCM 6202 device connected to an Analog Trunk, my service provider is CLARO Telecommunications.
When I set up an IVR as a Welcome Message on the incoming call, the IP-PBX does not recognize any number as an option to transfer the call to an extension number.
It has already been tested with all the DTMF options that the system has but none works correctly.
Analog Trunk: Claro Supplier
Thank you very much for your help.