Assume a connection between a sip endpoint and a POTS peer, AB connection. The access to the POTS is through a cisco gateway.
A (pots) ----------- GW (3620)-------------- B sipEndpoint.
| | (Transfer the AB connection to AC) |
C sipEndpoint
Whenever we try to transfer the AB connection to AC, the GW responses with just a 202 Accepted Message.
Enabling debugging in the cisco router we get the following messages.
cause i = 0x82E0981C Mandatory information Element Missing. Call State i=0x0A
The version of the router is:
Cisco Internetwork Operating System Software
IOS (tm) 3600 Software (C3620-IS-M), Version 12.2(13)T, RELEASE SOFTWARE (fc1)
Compiled Sat 16-Nov-02 09:30 by ccai Image text-base: 0x6000891C, data-base: 0x61848000
System image file is "flash:c3620-is-mz.122-13.T.bin"
The dial peers are correctly configured. The transfer with Cisco 7960 and ATA188 has no problem. I wonder if someone could help. What is the mandatory element missing?
Thanks in advance.
The messages flow is following:
Request line: REFER sip:[EMAIL PROTECTED]:5060 SIP/2.0
Message Header
Max-Forwards: 69
Via: SIP/2.0/UDP 146.124.120.212;branch=z9hG4bKf08e.ecd768c1.0
Via: SIP/2.0/UDP 146.124.120.94:5060
From: <sip:[EMAIL PROTECTED]>;tag=58912
To: <sip:[EMAIL PROTECTED]>;tag=240DD5C8-2B8
Call-ID: [EMAIL PROTECTED]
CSeq: 3 REFER
Refer-To: <sip:[EMAIL PROTECTED]>
Referred-By: <sip:[EMAIL PROTECTED]>
Contact: <sip:[EMAIL PROTECTED]:5060>
User-Agent: netPhone-2.9
Content-Length: 0Status line: SIP/2.0 202 Accepted
Message Header
Via: SIP/2.0/UDP 146.124.120.212;branch=z9hG4bKf08e.ecd768c1.0,SIP/2.0/UDP 146.124.120.94:5060
From: <sip:[EMAIL PROTECTED]>;tag=58912
To: <sip:[EMAIL PROTECTED]>;tag=240DD5C8-2B8
Date: Mon, 08 Mar 1993 00:01:36 GMT
Call-ID: [EMAIL PROTECTED]
Server: Cisco-SIPGateway/IOS-12.x
CSeq: 3 REFER
Content-Length: 0
_______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
