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New Member

CME SIP phones no outbound calls / SCCP phones fine

Hi,

This is a new deployment on CMEv10. We are using 8945 phones in SCCP and 8831's in SIP mode (not offically supported - check the attached config to get 8831's registered to your CME). We are using SIP trunks here in the Uk.

My 8945's can make and receive calls through the SIP trunks and locally to the 8831's no problem.

My 8831's can make on-net calls to the 8945's and to each other fine. They can not make or receive calls through the SIP trunks.

Please see attached debugs - 'debug voice dial-peer all' & 'debug ccsip message'

I attach debugs for a working outbound call from an 8945 and a failed outbound call from an 8831. Also a sh run.

I noticed in the dialpeer debugs that the call appears to be only sending one digit to the Telco - i was dialing 907777777777 but only the 9 is sent to the telco.

Any help appreciated.

Thanks

Paul.

2 REPLIES

Paul,When you make a

Paul,

When you make a successful call from one of the SCCP phones over the SIP trunk, what codec is being negotiated? 

My thought is it is going to be g.729. 

In the SIP trace you are seeing this:
Apr 24 12:53:02.711: //121/2B931E5B8174/SIP/Msg/ccsipDisplayMsg:
Received: 
SIP/2.0 488 Not Acceptable Here
Via: SIP/2.0/UDP 10.50.0.82:5060;branch=z9hG4bK3140C
To: <sip:07777777777@10.128.0.57>;tag=3607332896-607526
From: "Kitchen" <sip:01568592281@213.218.197.240>;tag=317CCC-17AC
Call-ID: 3440CB21-CAE611E3-817BC1AA-9CC01F93@10.50.0.82
CSeq: 101 INVITE
Allow: CANCEL, ACK, INVITE, BYE, OPTIONS, NOTIFY, INFO, REFER, SUBSCRIBE, PRACK, UPDATE, MESSAGE, PUBLISH
Contact: <sip:07777777777@10.128.0.57:5060>
Reason: Q.850;cause=65
Content-Length: 0

A 488 response usually points to a codec mismatch. You would be seeing this because your 8831 phones are hard-coded to use g.711u

HTH,

Adam

New Member

Hi, Did you resolve this

Hi, Did you resolve this issue . do you remember . We are facing the same problem.

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