[Serusers] HELP: 487 Request Terminated Being Retransmitted

Fri Jan 21 17:11:15 CET 2005

Hi all.

Below is the tail end of a SIP conversation whereby I dialed a PSTN telephone number and let it
ring but hung up before the PSTN phone was answered. The SER sent the PSTN gateway a CANCEL
message and it replied and all seemed well until the very end of the conversation where there are
multiple "487 Request Terminated" messages transmitted from SER to the IP phone.

Can anyone tell me if this is "normal" or if I need to worry about this?

Regards,
Paul

IP Legend:
-------------------------------------
68.84.10.10 - PUBLIC SIDE OF FIREWALL
68.84.10.20 - IP ADDRESS OF SER PROXY
68.84.10.30 - IP ADDRESS OF PSTN GATEWAY

U 2005/01/21 10:43:36.874272 68.84.10.10:63689 -> 68.84.10.20:5060
CANCEL sip:4075551212 at mycompany.com;user=phone SIP/2.0.
Via: SIP/2.0/UDP 192.168.0.83:63689;branch=z9hG4bK868145b476db8dae.
From: "Paul" <sip:3212514231 at mycompany.com;user=phone>;tag=16ec22902b85a039.
To: <sip:4075551212 at mycompany.com;user=phone>.
Call-ID: 42c962bf359504ab at 192.168.0.83.
CSeq: 30333 CANCEL.
User-Agent: Grandstream BT100 1.0.5.16.
Max-Forwards: 70.
Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
Content-Length: 0.
.

#
U 2005/01/21 10:43:36.877795 68.84.10.20:5060 -> 68.84.10.30:5060
CANCEL sip:4075551212 at 68.84.10.30;user=phone SIP/2.0.
Via: SIP/2.0/UDP 68.84.10.20;branch=z9hG4bKd753.8322b441.0.
Via: SIP/2.0/UDP 192.168.0.83:63689;received=68.84.10.10;branch=z9hG4bK868145b476db8dae.
From: "Paul" <sip:3212514231 at mycompany.com;user=phone>;tag=16ec22902b85a039.
To: <sip:4075551212 at mycompany.com;user=phone>.
Call-ID: 42c962bf359504ab at 192.168.0.83.
CSeq: 30333 CANCEL.
User-Agent: Grandstream BT100 1.0.5.16.
Max-Forwards: 16.
Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
Content-Length: 0.
.

#
U 2005/01/21 10:43:36.877884 68.84.10.20:5060 -> 68.84.10.10:63689
SIP/2.0 200 canceling.
Via: SIP/2.0/UDP 192.168.0.83:63689;branch=z9hG4bK868145b476db8dae;received=68.84.10.10.
From: "Paul" <sip:3212514231 at mycompany.com;user=phone>;tag=16ec22902b85a039.
To: <sip:4075551212 at mycompany.com;user=phone>;tag=8dfa8202461711560b5fb8c33916f682-1b42.
Call-ID: 42c962bf359504ab at 192.168.0.83.
CSeq: 30333 CANCEL.
Content-Length: 0.
.

#
U 2005/01/21 10:43:36.934535 68.84.10.30:5060 -> 68.84.10.20:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 68.84.10.20;branch=z9hG4bKd753.8322b441.0.
Via: SIP/2.0/UDP 192.168.0.83:63689;received=68.84.10.10;branch=z9hG4bK868145b476db8dae.
To: <sip:4075551212 at mycompany.com;user=phone>.
From: "Paul" <sip:3212514231 at mycompany.com;user=phone>;tag=16ec22902b85a039.
Call-ID: 42c962bf359504ab at 192.168.0.83.
CSeq: 30333 CANCEL.
User-Agent: Grandstream BT100 1.0.5.16 .
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, OPTIONS, INFO, SUBSCRIBE.
Content-Length: 0.
.

#
U 2005/01/21 10:43:36.955761 68.84.10.30:5060 -> 68.84.10.20:5060
SIP/2.0 487 Request Terminated.
Via: SIP/2.0/UDP 68.84.10.20;branch=z9hG4bKd753.8322b441.0.
Via: SIP/2.0/UDP
192.168.0.83:63689;rport=63689;received=68.84.10.10;branch=z9hG4bK868145b476db8dae.
To: <sip:4075551212 at mycompany.com;user=phone>;tag=06b020d6.
From: "Paul" <sip:3212514231 at mycompany.com;user=phone>;tag=16ec22902b85a039.
Call-ID: 42c962bf359504ab at 192.168.0.83.
CSeq: 30333 INVITE.
Record-Route: <sip:68.84.10.30:5060;lr>.
Record-Route: <sip:68.84.10.20;ftag=16ec22902b85a039;lr=on>.
Content-Length: 0.
.

#
U 2005/01/21 10:43:36.955950 68.84.10.20:5060 -> 68.84.10.30:5060
ACK sip:4075551212 at 68.84.10.30;user=phone SIP/2.0.
Via: SIP/2.0/UDP 68.84.10.20;branch=z9hG4bKd753.8322b441.0.
From: "Paul" <sip:3212514231 at mycompany.com;user=phone>;tag=16ec22902b85a039.
Call-ID: 42c962bf359504ab at 192.168.0.83.
To: <sip:4075551212 at mycompany.com;user=phone>;tag=06b020d6.
CSeq: 30333 ACK.
Content-Length: 0.
.

#
U 2005/01/21 10:43:36.956037 68.84.10.20:5060 -> 68.84.10.10:63689
SIP/2.0 487 Request Terminated.
Via: SIP/2.0/UDP
192.168.0.83:63689;rport=63689;received=68.84.10.10;branch=z9hG4bK868145b476db8dae.
To: <sip:4075551212 at mycompany.com;user=phone>;tag=06b020d6.
From: "Paul" <sip:3212514231 at mycompany.com;user=phone>;tag=16ec22902b85a039.
Call-ID: 42c962bf359504ab at 192.168.0.83.
CSeq: 30333 INVITE.
Record-Route: <sip:68.84.10.30:5060;lr>.
Record-Route: <sip:68.84.10.20;ftag=16ec22902b85a039;lr=on>.
Content-Length: 0.
.

#
U 2005/01/21 10:43:36.976267 68.84.10.10:63689 -> 68.84.10.20:5060
ACK sip:4075551212 at mycompany.com;user=phone SIP/2.0.
Via: SIP/2.0/UDP 192.168.0.83:63689;branch=z9hG4bK868145b476db8dae.
From: "Paul" <sip:3212514231 at mycompany.com;user=phone>;tag=16ec22902b85a039.
To: <sip:4075551212 at mycompany.com;user=phone>;tag=06b020d6.
Contact: <sip:3212514231 at 192.168.0.83:63689;user=phone>.
Proxy-Authorization: DIGEST username="3212514231", realm="mycompany.com", algorithm=MD5,
uri="sip:4075551212 at mycompany.com;user=phone", nonce="41f12450f15d3b4a9fb6cd05506a6030c7165718",
response="d9a2404031e7404ad89df3bef3d5dfd4".
Call-ID: 42c962bf359504ab at 192.168.0.83.
CSeq: 30333 ACK.
User-Agent: Grandstream BT100 1.0.5.16.
Max-Forwards: 70.
Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE.
Content-Length: 0.
.

#
U 2005/01/21 10:43:37.152117 68.84.10.20:5060 -> 68.84.10.10:63689
SIP/2.0 487 Request Terminated.
Via: SIP/2.0/UDP
192.168.0.83:63689;rport=63689;received=68.84.10.10;branch=z9hG4bK868145b476db8dae.
To: <sip:4075551212 at mycompany.com;user=phone>;tag=06b020d6.
From: "Paul" <sip:3212514231 at mycompany.com;user=phone>;tag=16ec22902b85a039.
Call-ID: 42c962bf359504ab at 192.168.0.83.
CSeq: 30333 INVITE.
Record-Route: <sip:68.84.10.30:5060;lr>.
Record-Route: <sip:68.84.10.20;ftag=16ec22902b85a039;lr=on>.
Content-Length: 0.
.

##
U 2005/01/21 10:43:39.172156 68.84.10.20:5060 -> 68.84.10.10:63689
SIP/2.0 487 Request Terminated.
Via: SIP/2.0/UDP
192.168.0.83:63689;rport=63689;received=68.84.10.10;branch=z9hG4bK868145b476db8dae.
To: <sip:4075551212 at mycompany.com;user=phone>;tag=06b020d6.
From: "Paul" <sip:3212514231 at mycompany.com;user=phone>;tag=16ec22902b85a039.
Call-ID: 42c962bf359504ab at 192.168.0.83.
CSeq: 30333 INVITE.
Record-Route: <sip:68.84.10.30:5060;lr>.
Record-Route: <sip:68.84.10.20;ftag=16ec22902b85a039;lr=on>.
Content-Length: 0.
.

#
U 2005/01/21 10:43:43.212328 68.84.10.20:5060 -> 68.84.10.10:63689
SIP/2.0 487 Request Terminated.
Via: SIP/2.0/UDP
192.168.0.83:63689;rport=63689;received=68.84.10.10;branch=z9hG4bK868145b476db8dae.
To: <sip:4075551212 at mycompany.com;user=phone>;tag=06b020d6.
From: "Paul" <sip:3212514231 at mycompany.com;user=phone>;tag=16ec22902b85a039.
Call-ID: 42c962bf359504ab at 192.168.0.83.
CSeq: 30333 INVITE.
Record-Route: <sip:68.84.10.30:5060;lr>.
Record-Route: <sip:68.84.10.20;ftag=16ec22902b85a039;lr=on>.
Content-Length: 0.
.

###########
U 2005/01/21 10:43:47.252508 68.84.10.20:5060 -> 68.84.10.10:63689
SIP/2.0 487 Request Terminated.
Via: SIP/2.0/UDP
192.168.0.83:63689;rport=63689;received=68.84.10.10;branch=z9hG4bK868145b476db8dae.
To: <sip:4075551212 at mycompany.com;user=phone>;tag=06b020d6.
From: "Paul" <sip:3212514231 at mycompany.com;user=phone>;tag=16ec22902b85a039.
Call-ID: 42c962bf359504ab at 192.168.0.83.
CSeq: 30333 INVITE.
Record-Route: <sip:68.84.10.30:5060;lr>.
Record-Route: <sip:68.84.10.20;ftag=16ec22902b85a039;lr=on>.
Content-Length: 0.

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