cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Announcements

435
Views
0
Helpful
2
Replies
joshuaprom
Beginner

Single Region SIP Error 503

Hello all,

Currently I am experiencing an issue where calls from endpoints (skinny or SIP) in a particular region on CUCM are getting a 503 response when trying to seize a SIP trunk to a non-cisco SBC. Few housekeeping items below:

1.) Every other region tested so far on CM is functioning as hoped, codec negotiation between the two regions is set to use G.729

2.) In SDP message from my endpoint, G.729 is shown in available codecs for use, SBC is configured to negotiate G.711u/alaw and G.729

3.) Moving phones into other regions resolves issue, moving phones into region recreates issue on devices that were previously working. All partitions and CSS are configured correctly.

4.)Intended route would be as follows:

Phone dials 3365 > 3365 matches route pattern in CUCM that seizes SIP trunk to non-cisco SBC > SBC routes call to UM on office 365

5.) Not a master on SIP, but I believe to have done my due diligence here and am at a loss, case is open with TAC but they're taking exceptionally long time for first contact.

6.) I know this is involving non-cisco hardware, but since region settings appear to be affecting my outcomes should still be able to resolve. (moving this to CUBE very soon.)

TCP Stream from wireshark:

INVITE sip:2365@10.193.0.18;user=phone SIP/2.0
Via: SIP/2.0/TCP 10.1.42.7:50598;branch=z9hG4bK3393afb2
From: "Josh Prom - 6702" <sip:6702@10.193.0.18>;tag=00af1f9dab710505067afe4e-63bb9002
To: <sip:2365@10.193.0.18>
Call-ID: 00af1f9d-ab71004c-5c355cd1-0ae0dfc5@10.1.42.7
Max-Forwards: 70
Session-ID: 70adbe5f00105000a00000af1f9dab71;remote=00000000000000000000000000000000
Date: Wed, 20 Jul 2016 14:58:54 GMT
CSeq: 101 INVITE
User-Agent: Cisco-CP8811/11.0.1
Contact: <sip:0c7e26bb-f96e-5935-63d9-917b3d94a08c@10.1.42.7:50598;transport=tcp>;+u.sip!devicename.ccm.cisco.com="SEP00AF1F9DAB71"
Expires: 180
Accept: application/sdp
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,OPTIONS,REFER,REGISTER,UPDATE,SUBSCRIBE,INFO
Remote-Party-ID: "Josh Prom - 6702" <sip:6702@10.193.0.18>;party=calling;id-type=subscriber;privacy=off;screen=yes
Supported: replaces,join,sdp-anat,norefersub,resource-priority,extended-refer,X-cisco-callinfo,X-cisco-serviceuri,X-cisco-escapecodes,X-cisco-service-control,X-cisco-srtp-fallback,X-cisco-monrec,X-cisco-config,X-cisco-sis-7.0.0,X-cisco-xsi-8.5.1
Allow-Events: kpml,dialog
Recv-Info: conference
Recv-Info: x-cisco-conference
Content-Length: 396
Content-Type: application/sdp
Content-Disposition: session;handling=optional

v=0
o=Cisco-SIPUA 5335 0 IN IP4 10.1.42.7
s=SIP Call
b=AS:4064
t=0 0
m=audio 22342 RTP/AVP 9 124 0 8 116 18 101
c=IN IP4 10.1.42.7
b=TIAS:64000
a=rtpmap:9 G722/8000
a=rtpmap:124 ISAC/16000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:116 iLBC/8000
a=fmtp:116 mode=20
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=yes
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv
SIP/2.0 100 Trying
Via: SIP/2.0/TCP 10.1.42.7:50598;branch=z9hG4bK3393afb2
From: "Josh Prom - 6702" <sip:6702@10.193.0.18>;tag=00af1f9dab710505067afe4e-63bb9002
To: <sip:2365@10.193.0.18>
Date: Wed, 20 Jul 2016 14:58:51 GMT
Call-ID: 00af1f9d-ab71004c-5c355cd1-0ae0dfc5@10.1.42.7
CSeq: 101 INVITE
Allow-Events: presence
Content-Length: 0

SIP/2.0 180 Ringing
Via: SIP/2.0/TCP 10.1.42.7:50598;branch=z9hG4bK3393afb2
From: "Josh Prom - 6702" <sip:6702@10.193.0.18>;tag=00af1f9dab710505067afe4e-63bb9002
To: <sip:2365@10.193.0.18>;tag=1987314~360efc56-84b9-4e97-9213-478549571729-45493109
Date: Wed, 20 Jul 2016 14:58:51 GMT
Call-ID: 00af1f9d-ab71004c-5c355cd1-0ae0dfc5@10.1.42.7
CSeq: 101 INVITE
Allow: INVITE, OPTIONS, INFO, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY
Allow-Events: presence
Call-Info: <urn:x-cisco-remotecc:callinfo>; security= NotAuthenticated; orientation= to; ui-state= ringout; gci= 2-3414275; call-instance= 1
Send-Info: conference, x-cisco-conference
Remote-Party-ID: <sip:2365@10.193.0.18>;party=called;screen=no;privacy=off
Remote-Party-ID: <sip:2365@10.193.0.18;user=phone>;party=x-cisco-original-called;privacy=off
Contact: <sip:2365@10.193.0.18:5060;transport=tcp>
Content-Length: 0

UPDATE sip:0c7e26bb-f96e-5935-63d9-917b3d94a08c@10.1.42.7:50598;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 10.193.0.18:5060;branch=z9hG4bK68c8a3c2569de
From: <sip:2365@10.193.0.18>;tag=1987314~360efc56-84b9-4e97-9213-478549571729-45493109
To: "Josh Prom - 6702" <sip:6702@10.193.0.18>;tag=00af1f9dab710505067afe4e-63bb9002
Date: Wed, 20 Jul 2016 14:58:51 GMT
Call-ID: 00af1f9d-ab71004c-5c355cd1-0ae0dfc5@10.1.42.7
User-Agent: Cisco-CUCM9.1
Max-Forwards: 70
Supported: timer,resource-priority,replaces
Allow: INVITE, OPTIONS, INFO, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY
CSeq: 101 UPDATE
Call-Info: <urn:x-cisco-remotecc:callinfo>; security= NotAuthenticated; orientation= to; ui-state= ringout; gci= 2-3414275; call-instance= 1
Remote-Party-ID: <sip:2365@10.193.0.18>;party=calling;screen=yes;privacy=off
Contact: <sip:2365@10.193.0.18:5060;transport=tcp>
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/TCP 10.193.0.18:5060;branch=z9hG4bK68c8a3c2569de
From: <sip:2365@10.193.0.18>;tag=1987314~360efc56-84b9-4e97-9213-478549571729-45493109
To: "Josh Prom - 6702" <sip:6702@10.193.0.18>;tag=00af1f9dab710505067afe4e-63bb9002
Call-ID: 00af1f9d-ab71004c-5c355cd1-0ae0dfc5@10.1.42.7
Session-ID: 70adbe5f00105000a00000af1f9dab71;remote=00000000000000000000000000000000
Date: Wed, 20 Jul 2016 14:59:00 GMT
CSeq: 101 UPDATE
Server: Cisco-CP8811/11.0.1
Contact: <sip:0c7e26bb-f96e-5935-63d9-917b3d94a08c@10.1.42.7:50598;transport=tcp>;+u.sip!devicename.ccm.cisco.com="SEP00AF1F9DAB71"
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,OPTIONS,REFER,REGISTER,UPDATE,SUBSCRIBE,INFO
Content-Length: 0

SIP/2.0 503 Service Unavailable
Via: SIP/2.0/TCP 10.1.42.7:50598;branch=z9hG4bK3393afb2
From: "Josh Prom - 6702" <sip:6702@10.193.0.18>;tag=00af1f9dab710505067afe4e-63bb9002
To: <sip:2365@10.193.0.18>;tag=1987314~360efc56-84b9-4e97-9213-478549571729-45493109
Date: Wed, 20 Jul 2016 14:58:51 GMT
Call-ID: 00af1f9d-ab71004c-5c355cd1-0ae0dfc5@10.1.42.7
CSeq: 101 INVITE
Allow-Events: presence
Reason: Q.850;cause=47
Remote-Party-ID: <sip:2365@10.193.0.18;user=phone>;party=x-cisco-original-called;privacy=off
Content-Length: 0

ACK sip:2365@10.193.0.18;user=phone SIP/2.0
Via: SIP/2.0/TCP 10.1.42.7:50598;branch=z9hG4bK3393afb2
From: "Josh Prom - 6702" <sip:6702@10.193.0.18>;tag=00af1f9dab710505067afe4e-63bb9002
To: <sip:2365@10.193.0.18>;tag=1987314~360efc56-84b9-4e97-9213-478549571729-45493109
Call-ID: 00af1f9d-ab71004c-5c355cd1-0ae0dfc5@10.1.42.7
Session-ID: 70adbe5f00105000a00000af1f9dab71;remote=00000000000000000000000000000000
Max-Forwards: 70
Date: Wed, 20 Jul 2016 14:59:00 GMT
CSeq: 101 ACK
Content-Length: 0

NOTIFY sip:6702@10.193.0.18 SIP/2.0
Via: SIP/2.0/TCP 10.1.42.7:50598;branch=z9hG4bK2016e838
To: "Josh Prom - 6702" <sip:6702@10.193.0.18>
From: "Josh Prom - 6702" <sip:6702@10.193.0.18>;tag=00af1f9dab71050f21e5e14d-07e23a5d
Call-ID: 0ed54087-4ce3407b@10.1.42.7
Session-ID: ebc3e59300105000a00000af1f9dab71;remote=00000000000000000000000000000000
Date: Wed, 20 Jul 2016 14:59:05 GMT
CSeq: 72 NOTIFY
Event: dialog
Subscription-State: active
Max-Forwards: 70
Contact: <sip:0c7e26bb-f96e-5935-63d9-917b3d94a08c@10.1.42.7:50598;transport=tcp>
Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,OPTIONS,REFER,REGISTER,UPDATE,SUBSCRIBE
Content-Length: 353
Content-Type: application/dialog-info+xml
Content-Disposition: session;handling=required

<?xml version="1.0" encoding="UTF-8" ?>
<dialog-info xmlns:call="urn:x-cisco:parmams:xml:ns:dialog-info:dialog:callinfo-dialog" version="13" state="partial" entity="sip:6702@10.1.42.7">
<dialog id="67" call-id="00af1f9d-ab71004c-5c355cd1-0ae0dfc5@10.1.42.7" local-tag="00af1f9dab710505067afe4e-63bb9002"><state>terminated</state></dialog>
</dialog-info>SIP/2.0 200 OK
Via: SIP/2.0/TCP 10.1.42.7:50598;branch=z9hG4bK2016e838
From: "Josh Prom - 6702" <sip:6702@10.193.0.18>;tag=00af1f9dab71050f21e5e14d-07e23a5d
To: "Josh Prom - 6702" <sip:6702@10.193.0.18>;tag=1068170891
Date: Wed, 20 Jul 2016 14:59:02 GMT
Call-ID: 0ed54087-4ce3407b@10.1.42.7
CSeq: 72 NOTIFY
Content-Length: 0

2 REPLIES 2
Chris Deren
Hall of Fame Master

Please provide "debug ccsip messages" for the bad and good call.

Compare your video configuration between the regions and locations (if different).

Mohammed al Baqari
VIP Advisor

Can you use RTMT to connect to CUCM and generate Real Time Session Trace. Save all SIP messages for a particular none working call and share the snapshot for ladder diagram and SIP messages.

Content for Community-Ad