406 Not Acceptable on inbound calls using extension dialing from digital receptionist

[mikegillespie]

Inbound calls using extension dialing from digital receptionist fail.

Analog lines through Patton SN4114 FXO gateway
Cisco SPA504G phones provisioned by 3CX

IVR answers the call, the extension can be dialed, the caller hears hold music for a short time (less than a second), then the caller hears the prompt "Call Transfer Failed" and the IVR repeats.

Here are the logs;


01/21/2020 3:45:20 PM - Leg L:35.3[Extn:1000] is terminated: Cause: 406 Not Acceptable/INVITE from 192.168.5.100:5060
01/21/2020 3:45:20 PM - [Flow] No office hours set, office hours assumed
01/21/2020 3:45:20 PM - L:35.1[Line:10002<<anonymous] failed to reach Extn:1000, reason Reason Unknown
01/21/2020 3:45:20 PM - Call to T:Extn:1000@[Dev:sip:[email protected]:5060] from L:35.1[Line:10002<<anonymous] failed, cause: Cause: 406 Not Acceptable/INVITE from 192.168.5.100:5060
01/21/2020 3:45:20 PM - [CM503003]: Call(C:35): Call to <sip:[email protected]:0> has failed; Cause: 406 Not Acceptable/INVITE from 192.168.5.100:5060
01/21/2020 3:45:20 PM - [CM503025]: Call(C:35): Calling T:Extn:1000@[Dev:sip:[email protected]:5060] for L:35.1[Line:10002<<anonymous]
01/21/2020 3:45:20 PM - [CM503027]: Call(C:35): From: Line:10002<<anonymous (<sip:[email protected]3cx.ca:5060>) to T:Extn:1000@[Dev:sip:[email protected]:5060]
01/21/2020 3:45:20 PM - [CM503004]: Call(C:35): Route 1: from L:35.1[Line:10002<<anonymous] to T:Extn:1000@[Dev:sip:[email protected]:5060]
01/21/2020 3:45:20 PM - [Flow] No office hours set, office hours assumed
01/21/2020 3:45:20 PM - [Flow] Call(C:35): has built target endpoint: Extn:1000 for call from L:35.1[Line:10002<<anonymous]
01/21/2020 3:45:20 PM - [Flow] Target endpoint for 1000 is Extn:1000
01/21/2020 3:45:20 PM - [CM503010]: Call(C:35): Making route(s) from Line:10002<<anonymous to <sip:[email protected]:5060/UDP>
01/21/2020 3:45:20 PM - [Flow] Refer: RefTo=<sip:[email protected]:5060>; was call from=<sip:[email protected]:0> to=<sip:[email protected]:5060>
01/21/2020 3:45:12 PM - [CM503007]: Call(C:35): Ivr:8001 has joined, contact <sip:[email protected]:5483/UDP>
01/21/2020 3:45:12 PM - [CM503007]: Call(C:35): Line:10002<<anonymous has joined, contact <sip:[email protected]:5060/UDP>
01/21/2020 3:45:12 PM - L:35.2[Ivr:8001] has joined to L:35.1[Line:10002<<anonymous]
01/21/2020 3:45:12 PM - [CM505001]: Endpoint Ivr:8001: Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [3CX IVR] PBX contact: [sip:[email protected]:5060]
01/21/2020 3:45:12 PM - [CM503002]: Call(C:35): Alerting Ivr:8001 by contact <sip:[email protected]:5483/UDP>


Thanks

Mike

 

[Zol]

Maybe you're hitting the same issue?
https://www.3cx.com/community/threads/incoming-calls-failing-with-a-406-error-code.50423/

 

[eddv123]

I would have to agree, to check the results in that string first failing that work your way through the call process Gateway >> PBX >> Phone and ensure each element is passing the call correctly.

We still have some sites with Cisco's on however we are slowly migrating them across to Yealinks (and have been for some time now).