what is SIP/2.0 481 Call Leg/Transaction Does Not Exist means ?

Answered Question
Jun 2nd, 2010
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Hello,


when call cme from sip trunk and hangup the call from the calling phone debug ccsip show :


Jun  2 08:52:40.541: //-1/xxxxxxxxxxxx/SIP/Info/ccsip_new_msg_preprocessor: Checking Invite Dialog
Jun  2 08:52:40.541: //-1/xxxxxxxxxxxx/SIP/Error/sipSPISipIncomingMsg: Invalid method for (STATE_IDLE): CANCEL
Jun  2 08:52:40.545: //-1/xxxxxxxxxxxx/SIP/Transport/sipSPISendErrorRespNoCCB: Sending Error Response No CCB to the transport layer
Jun  2 08:52:40.545: //-1/xxxxxxxxxxxx/SIP/Transport/sipSPITransportSendMessage: msg=0x88D771A0, addr=172.19.1.78, port=5060, sentBy_port=5060, is_req=0, transport=1, switch=0, callBack=0x00000000
Jun  2 08:52:40.545: //-1/xxxxxxxxxxxx/SIP/Transport/sipConnectionManagerGetConnectionIfExists: Connection Holder for addr=172.19.1.78 not found
CME(config-sip-ua)#
Jun  2 08:52:40.545: //-1/xxxxxxxxxxxx/SIP/Transport/sipTransportPostSendMessage: Posting send for msg=0x88D771A0, addr=172.19.1.78, port=5060, connId=0 for UDP
Jun  2 08:52:40.553: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Sent:
SIP/2.0 481 Call Leg/Transaction Does Not Exist
Via: SIP/2.0/UDP 77.72.169.134:5060;branch=z9hG4bK49b6543463d947caa1e4b81bf0267d24;received=172.19.1.78
From: <sip:[email protected]:5060>;tag=4e0113ac4c050c86452e9
To: <sip:my [email protected] add:5060>
Call-ID: 4c4d940ab840442cb123a51a893cf5f5
CSeq: 3 CANCEL
Content-Length: 0

Correct Answer by Abu Hadee about 6 years 11 months ago

Hi


This means that the gateway does not have any record of the call. Either there wasn't any call or it has deleted the information.


Looking at the snippet, that particular msg was sent in reponse of cancel event. Without seeing the whole debug, I am assuming that GW received cancel earlier and deleted the call and send reponse. But caller side sent another cancel msg so gw gives above msg


Hope this helps


thanks

- abu

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Correct Answer
Abu Hadee Wed, 06/02/2010 - 03:00
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Hi


This means that the gateway does not have any record of the call. Either there wasn't any call or it has deleted the information.


Looking at the snippet, that particular msg was sent in reponse of cancel event. Without seeing the whole debug, I am assuming that GW received cancel earlier and deleted the call and send reponse. But caller side sent another cancel msg so gw gives above msg


Hope this helps


thanks

- abu

Abu Hadee Wed, 06/02/2010 - 03:32
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You have connectivity issue. The response that the CME is sending, is not received by the caller side. That is why it kept sending.


And same happens when caller side cancels the call, GW sends response and delete from its memory, but caller proxy keep sending it, so gw sends 487 msg.



All response will be sent to 77.72.169.134. Can you check if there is anything that could drop the packet or not?



Thank you

samer.sabeeh Wed, 06/02/2010 - 03:56
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thanks for you quick response


all i can tell you regarding connectivity that cme router has public ip address from ISP directly connected to its fa0/1


i can ping this ip address from the router


CME#ping 77.72.169.134

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 77.72.169.134, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/32 ms




but i can not trace route it


CME#traceroute 77.72.169.134

Type escape sequence to abort.
Tracing the route to 77.72.169.134

  1 82-168-191-254.ip.telfort.nl (82.168.191.254) 16 msec 16 msec 16 msec
  2 172.26.42.33 16 msec 16 msec 16 msec
  3  *  *  *
  4 195.190.227.223 20 msec 20 msec 20 msec
  5 ffm-s1-rou-1022.DE.eurorings.net (134.222.229.18) 36 msec
    obl-rou-1021.NL.eurorings.net (134.222.229.137) 20 msec
    obl-rou-1021.NL.eurorings.net (134.222.229.129) 16 msec
  6 ffm-s1-rou-1022.DE.eurorings.net (134.222.231.138) 36 msec 36 msec 36 msec
  7 ffm-s1-rou-1006.DE.eurorings.net (134.222.227.10) 56 msec 52 msec *
  8  *  *  *
  9  *  *  *
10  *  *  *
11  *  *  *
12  *  *  *
13  *  *  *
14  *  *  *
15  *  *  *
16  *  *  *
17  *  *  *
18  *  *  *
19  *  *  *
20  *  *  *
21  *  *  *
22  *  *  *
23  *  *  *
24  *  *  *
25  *  *  *
26  *  *  *
27  *  *  *
28  *  *  *
29  *  *  *
30  *  *  *


CME#show ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route

Gateway of last resort is 0.0.0.0 to network 0.0.0.0


C    192.168.10.0/24 is directly connected, FastEthernet0/0
     82.0.0.0/32 is subnetted, 1 subnets
S       82.168.191.254 [254/0] via *my ip address*, FastEthernet0/1
S*   0.0.0.0/0 is directly connected, FastEthernet0/1
C    195.240.*.0/21 is directly connected, FastEthernet0/1


is th there any debug output you would like to see ??? kindly advice



thank you

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