[cisco-voip] Inbound PSTN call to SIP Gateway

Brian Schultz bms314 at gmail.com
Mon Apr 26 20:37:23 EDT 2010


It turned out to be a dial-peer issue.  My outbound dial-peer was
misconfigured causing this problem.

Thanks,
Brian

On Mon, Apr 26, 2010 at 5:44 PM, Brian Schultz <bms314 at gmail.com> wrote:

> I'm getting a strange behavior on our SIP Gateway.  Not sure if this is a
> SIP problem or an ISDN problem.  Topology is PRI to 2921 (15.0.M1.12) SIP
> Gateway to CUCM 8.0(2).  On at least half of inbound calls, I do not see SIP
> setup messages immediately.  I get a 'No route to destination' ISDN
> message.  Then, as soon as the call is released, I immediately see SIP
> invite message and my phone begins to ring.  I can reproduce this
> consistently, although it only happens on about 60% of calls.  On the calls
> that don't work properly, I see a strange second ISDN setup message.  On the
> calls that do work properly, I do not see this second setup message.  Here
> is a debug of a bad call.  Any ideas?
>
>
> 002311: Apr 26 17:20:49 Central: ISDN Se0/0/0:23 Q931: RX <- SETUP pd = 8
> callref = 0x0001
>         Bearer Capability i = 0x8090A2
>                 Standard = CCITT
>                 Transfer Capability = Speech
>                 Transfer Mode = Circuit
>                 Transfer Rate = 64 kbit/s
>         Channel ID i = 0xA98381
>                 Exclusive, Channel 1
>         Calling Party Number i = 0x2183, '9528183360'
>                 Plan:ISDN, Type:National
>         Called Party Number i = 0xC1, '7715'
>                 Plan:ISDN, Type:Subscriber(local)
> 002312: Apr 26 17:20:49 Central: ISDN Se0/0/0:23 Q931: Received SETUP
> callref = 0x8001 callID = 0x0052 switch = primary-5ess interface = User
> 002313: Apr 26 17:20:49 Central: ISDN Se0/0/0:23 Q931: Applying typeplan
> for sw-type 0x3 is 0x2 0x1, Calling num 9528183360
> 002314: Apr 26 17:20:49 Central: ISDN Se0/0/0:23 Q931: Sending SETUP
> callref = 0x00A3 callID = 0x8024 switch = primary-5ess interface = User
> 002315: Apr 26 17:20:49 Central: ISDN Se0/0/0:23 Q931: TX -> CALL_PROC pd =
> 8  callref = 0x8001
>         Channel ID i = 0xA98381
>                 Exclusive, Channel 1
> 002316: Apr 26 17:20:49 Central: ISDN Se0/0/0:23 Q931: TX -> SETUP pd = 8
> callref = 0x00A3
>         Bearer Capability i = 0x8090A2
>                 Standard = CCITT
>                 Transfer Capability = Speech
>                 Transfer Mode = Circuit
>                 Transfer Rate = 64 kbit/s
>         Channel ID i = 0xA98397
>                 Exclusive, Channel 23
>         Calling Party Number i = 0x2183, '9528183360'
>                 Plan:ISDN, Type:National
>         Called Party Number i = 0xC1, '7715'
>                 Plan:ISDN, Type:Subscriber(local)
> 002317: Apr 26 17:20:49 Central: ISDN Se0/0/0:23 Q931: RX <- CALL_PROC pd =
> 8  callref = 0x80A3
>         Channel ID i = 0xA98397
>                 Exclusive, Channel 23
> UHD.EAST.RTR1#
> 002318: Apr 26 17:20:49 Central: ISDN Se0/0/0:23 Q931: RX <- PROGRESS pd =
> 8  callref = 0x80A3
>         Cause i = 0x8283 - No route to destination
>         Progress Ind i = 0x8288 - In-band info or appropriate now available
> 002319: Apr 26 17:20:49 Central: ISDN Se0/0/0:23 Q931: TX -> ALERTING pd =
> 8  callref = 0x8001
>         Progress Ind i = 0x8288 - In-band info or appropriate now available
> UHD.EAST.RTR1#
> 002320: Apr 26 17:20:56 Central: ISDN Se0/0/0:23 Q931: RX <- DISCONNECT pd
> = 8  callref = 0x80A3
>         Cause i = 0x8290 - Normal call clearing
> 002321: Apr 26 17:20:56 Central: ISDN Se0/0/0:23 Q931: TX -> RELEASE pd =
> 8  callref = 0x00A3
> 002322: Apr 26 17:20:56 Central: ISDN Se0/0/0:23 Q931: RX <- RELEASE_COMP
> pd = 8  callref = 0x80A3
> 002323: Apr 26 17:20:56 Central: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
> Sent:
> INVITE sip:7715 at 172.21.20.10:5060 SIP/2.0
> Via: SIP/2.0/UDP 172.21.20.254:5060;branch=z9hG4bK5F116B5
> Remote-Party-ID: <sip:9528183360 at 172.21.20.254<sip%3A9528183360 at 172.21.20.254>
> >;party=calling;screen=yes;privacy=off
> From: <sip:9528183360 at 172.21.20.254 <sip%3A9528183360 at 172.21.20.254>
> >;tag=338EFDD0-0
> To: <sip:7715 at 172.21.20.10 <sip%3A7715 at 172.21.20.10>>
> Date: Mon, 26 Apr 2010 22:20:56 GMT
> Call-ID: D173E402-50B811DF-81B6FADB-42390B at 172.21.20.254
> Supported: 100rel,timer,resource-priority,replaces,sdp-anat
> Min-SE:  1800
> Cisco-Guid: 3443953355-1354240479-2151450691-3779644176
> User-Agent: Cisco-SIPGateway/IOS-12.x
> Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE,
> NOTIFY, INFO, REGISTER
> CSeq: 101 INVITE
> Max-Forwards: 70
> Timestamp: 1272320456
> Contact: <sip:9528183360 at 172.21.20.254:5060>
> Expires: 180
> Allow-Events: telephone-event
> Content-Type: application/sdp
> Content-Disposition: session;handling=required
> Content-Length: 330
> v=0
> o=CiscoSystemsSIP-GW-UserAgent 6890 9465 IN IP4 172.21.20.254
> s=SIP Call
> c=IN IP4 172.21.20.254
> t=0 0
> m=audio 18282 RTP/AVP 0 18 9 101
> c=IN IP4 172.21.20.254
> a=rtpmap:0 PCMU/8000
> a=rtpmap:18 G729/8000
> a=fmtp:18 annexb=no
> a=rtpmap:9 G722/8000
> a=fmtp:9 bitrate=64
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-16
> 002324: Apr 26 17:20:56 Central: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
> Received:
> SIP/2.0 100 Trying
> Via: SIP/2.0/UDP 172.21.20.254:5060;branch=z9hG4bK5F116B5
> From: <sip:9528183360 at 172.21.20.254 <sip%3A9528183360 at 172.21.20.254>
> >;tag=338EFDD0-0
> To: <sip:7715 at 172.21.20.10 <sip%3A7715 at 172.21.20.10>>
> Date: Mon, 26 Apr 2010 22:21:15 GMT
> Call-ID: D173E402-50B811DF-81B6FADB-42390B at 172.21.20.254
> CSeq: 101 INVITE
> Allow-Events: presence
> Content-Length: 0
>
> 002325: Apr 26 17:20:56 Central: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
> Received:
> SIP/2.0 180 Ringing
> Via: SIP/2.0/UDP 172.21.20.254:5060;branch=z9hG4bK5F116B5
> From: <sip:9528183360 at 172.21.20.254 <sip%3A9528183360 at 172.21.20.254>
> >;tag=338EFDD0-0
> To: <sip:7715 at 172.21.20.10 <sip%3A7715 at 172.21.20.10>
> >;tag=fc6aef00-fcb6-4e1c-a8c0-e38242535154-20774958
> Date: Mon, 26 Apr 2010 22:21:15 GMT
> Call-ID: D173E402-50B811DF-81B6FADB-42390B at 172.21.20.254
> CSeq: 101 INVITE
> Allow: INVITE, OPTIONS, INFO, BYE, CANCEL, ACK, PRACK, UPDATE, REFER,
> SUBSCRIBE, NOTIFY
> Allow-Events: presence
> Contact: <sip:7715 at 172.21.20.10:5060>
> Supported: X-cisco-srtp-fallback
> S
> UHD.EAST.RTR1#upported: Geolocation
> P-Asserted-Identity: "PNetworks" <sip:7715 at 172.21.20.10<sip%3A7715 at 172.21.20.10>
> >
> Remote-Party-ID: "PNetworks" <sip:7715 at 172.21.20.10<sip%3A7715 at 172.21.20.10>
> >;party=called;screen=yes;privacy=off
> Content-Length: 0
>
> 002326: Apr 26 17:20:58 Central: ISDN Se0/0/0:23 Q931: RX <- DISCONNECT pd
> = 8  callref = 0x0001
>         Cause i = 0x8290 - Normal call clearing
> 002327: Apr 26 17:20:58 Central: ISDN Se0/0/0:23 Q931: TX -> RELEASE pd =
> 8  callref = 0x8001
> 002328: Apr 26 17:20:58 Central: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
> Sent:
> CANCEL sip:7715 at 172.21.20.10:5060 SIP/2.0
> Via: SIP/2.0/UDP 172.21.20.254:5060;branch=z9hG4bK5F116B5
> From: <sip:9528183360 at 172.21.20.254 <sip%3A9528183360 at 172.21.20.254>
> >;tag=338EFDD0-0
> To: <sip:7715 at 172.21.20.10 <sip%3A7715 at 172.21.20.10>>
> Date: Mon, 26 Apr 2010 22:20:56 GMT
> Call-ID: D173E402-50B811DF-81B6FADB-42390B at 172.21.20.254
> CSeq: 101 CANCEL
> Max-Forwards: 70
> Timestamp: 1272320458
> Reason: Q.850;cause=16
> Content-Length: 0
>
> 002329: Apr 26 17:20:58 Central: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
> Received:
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP 172.21.20.254:5060;branch=z9hG4bK5F116B5
> From: <sip:9528183360 at 172.21.20.254 <sip%3A9528183360 at 172.21.20.254>
> >;tag=338EFDD0-0
> To: <sip:7715 at 172.21.20.10 <sip%3A7715 at 172.21.20.10>>
> Date: Mon, 26 Apr 2010 22:21:16 GMT
> Call-ID: D173E402-50B811DF-81B6FADB-42390B at 172.21.20.254
> CSeq: 101 CANCEL
> Content-Length: 0
>
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