Hi,
we are configuring a third-party SIP device (EXTRON DMP 128 Plus - the Extron guide for CUCM side configuration attached) but we encounter problems in internal calls coming into this device, while outgoing calls work regularly. We have 2 CUCM platforms one version is CUCM 10.0 and another 11.5 on both there is the same problem, the logs of this device in the incoming calls are the following
2018-06-22T16:27:25Z
--- SIP-MESSAGE ( IN) ---
INVITE sip:7770@172.17.80.91:5060 SIP/2.0
Via: SIP/2.0/UDP 172.17.0.35:5060;branch=z9hG4bKc387be331f6da2
Max-Forwards: 22
Contact: <sip:03356936381@172.17.0.35:5060>
To: <sip:7770@172.17.0.35:5060>
From: <sip:03356936381@172.17.0.35>;tag=138770598~02b651c0-ca69-4ef4-b5d2-7f6506ffcd7d-50367657
Call-ID: 4eea6700-b2d1072f-48c249-230011ac@172.17.0.35
CSeq: 101 INVITE
Expires: 180
Min-SE: 3600
Alert-Info: <file://Bellcore-dr2/>
Allow: INVITE, OPTIONS, INFO, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY
Date: Fri, 22 Jun 2018 14:26:55 GMT
Supported: timer, resource-priority, replaces
User-Agent: Cisco-CUCM10.0
Allow-Events: presence
Remote-Party-ID: <sip:03356936381@172.17.0.35;x-cisco-callback-number=03356936381>;party=calling;screen=yes;privacy=off
Send-Info: conference, x-cisco-conference
Content-Length: 0
2018-06-22T16:27:25Z
--- SIP-MESSAGE (OUT) ---
SIP/2.0 501 Not Implemented
Via: SIP/2.0/UDP 172.17.0.35:5060;branch=z9hG4bKc387be331f6da2
To: <sip:7770@172.17.0.35:5060>;tag=652c643d
From: <sip:03356936381@172.17.0.35>;tag=138770598~02b651c0-ca69-4ef4-b5d2-7f6506ffcd7d-50367657
Call-ID: 4eea6700-b2d1072f-48c249-230011ac@172.17.0.35
CSeq: 101 INVITE
User-Agent: EESB 1.03.0009
Content-Length: 0
their guide, in the configuration of the Device SIP Profile, specifies the following:
When configuring the Trunk, Early Offer Support must be set to Mandatory. An MTP should be used if required.
we actually configure ourselves as required but their engineering tells us that incoming calls do not use the Early Offer.
below are the logs of a call generated by the DMP 128 Plus in which the early generated offer can be clearly seen
2018-06-22T16:26:29Z
--- SIP-MESSAGE (OUT) ---
INVITE sip:03356936381@172.17.0.35:5060 SIP/2.0
Via: SIP/2.0/ 172.17.80.91:5060;branch=z9hG4bK-524287-1---8ce5fe704a6c8d64;rport
Max-Forwards: 70
Contact: <sip:7770;ob>;+sip.instance="<urn:uuid:229239d7-4aa4-4cb0-b5d8-2ab8a2b01ea9>"
To: <sip:03356936381@172.17.0.35>;tag=138769876~02b651c0-ca69-4ef4-b5d2-7f6506ffcd7d-43592825
From: "Sala CDA NPU"<sip:7770@172.17.0.35:5060>;tag=02d51c37
Call-ID: s63q4WiyxlxP1OQyGd0s1g..
CSeq: 2 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, UPDATE, INFO
Content-Type: application/sdp
Supported: outbound, path
User-Agent: EESB 1.03.0009
Content-Length: 218
v=0
o=user 1792 1793 IN IP4 172.17.80.91
s=-
c=IN IP4 172.17.80.91
t=0 0
m=audio 50050 RTP/AVP 18 110
c=IN IP4 172.17.80.91
a=ptime:20
a=rtpmap:18 G729/8000
a=rtpmap:110 telephone-event/8000
a=fmtp:110 0-16
What should be done to get the callmanager to use the early offer ?
Thanks for the help,
Francesco
