I have a PRI with a small telco. When turning up, I had to change the Calling and Called number plan on the CCM gateway config from Cisco CallManager to ISND in order for outbound calls to work. (this is an MGCP gateway).
When the phones go into fallback mode, I am unable to dial out, and suspect that I need to code these calls the same as above. I have attached a visual of the mgcp settings I need to emulate in fallback mode. Please assist.