If an outbound call fails to local numbers or any other number out of the Public Switched Telephone Network (PSTN) gateway, it can be because the gateway sends a bearer capability with Unrestricted Digital. For example:
Bearer Capability i = 0x8890A3 Standard = CCITT Transfer Capability = Unrestricted Digital Transfer Mode = Circuit Transfer Rate = 64 kbit/s Channel ID i = 0xA9839F Exclusive, Channel 31
Telco disconnects with the Cause i = 0x84EF - Protocol error; unspecified error message.
This capability is sent when the IP phone has video capability enabled. If Telco does not support this capability, the call is rejected.
In order to resolve this issue, complete this configuration on the primary rate interface (PRI) voice-port, on the PSTN gateway:
voice-port x/y:z bearer-cap 3100Hz
This changes the bearer capability in the setup message to 3100Hz (for voice).
Hello, we are unable to call numbers in US because our telco is saying we are sending 11 digits to them (instead of 10). My senior staff is away so I am trying to figure this out. We are using e164 dial plan----and using mask with +1XXXXXXXXXX numbe...
I was alerted an issue the other day from a UCCX Subscriber node of the NonVoice Subsystem in partial service. When I checked the CCX Engine service and sub service, it showed fully up and had been up for several weeks since it was last rebooted. Not...
Hi Team,I am trying to fix audio issues by collecting different data metrics that can be used for analysis. Since onset of sudden transition from work from home , I am sure many customers like us will be dealing with sudden transition from office to work ...
Not sure under which category should I post this for best match so I am posting it underCisco Community Technology and Support Collaboration, Voice and Video IP Telephony and Phonesand will be posting under :Cisco Community Technology and Support Collabor...
Hi everyone, I recently have started updating our 8800 series phones (specifically 8851s) to 12.8(1) from 12.1(1) and it seems that this breaks the last line remembered. I think I need guidance, because from what I have been able to find this is the...