[Serusers] URGENT! AS5350 <-> SER incompatibility problem

[Ezequiel Colombo]

Hola Victor
Can you send the trace ?
ngrep at SER or debug ccsip messages at Cisco, and show sip-ua status.

----- Original Message ----- 
From: "Victor Huertas Garcia" <vhuertas at hotmail.com>
To: <serusers at lists.iptel.org>
Sent: Thursday, July 07, 2005 8:05 AM
Subject: [Serusers] URGENT! AS5350 <-> SER incompatibility problem


| 
| 
| Hi everybody!
| 
| 
| recently I have been testing calls to/from ISDN with a AS5350. My SER 
| version is 0.8.14 and when I make a call from ISDN towards a SIP UA 
| registered in the SER the problem is that the AS5350 is no aware of Call 
| Release.
| 
| I explain it in more detail...
| 
| 1. AS5350 sends an INVITE to the SER with destination number 93222222
| 2. SER forwards the INVITE to the corresponding SIP UA.
| 3. UA reponds with a 180 Ringing and it is forwarded to the AS5350 by the 
| SER
| 4. When I pick up the phone, the SIP UA sends a 200 OK message, which is 
| frowarded by the SER as well.
| 5. AS5350 replies with a ACK to the 200 OK but beware!! the AS5350 has 
| changed UDP source port!! it is different from the one set in INVITE.
| 6. The SIP UA hangs up the call  by sending a BYE message to the SER (it is 
| Record Routing)
| 7. The SER forwards the BYE to the AS5350 but with the old UDP port!!
| 8. AS5350 sends ICMP Destination Unreachable (Cause code: port unreachable) 
| every time that the SER retries the BYE.
| 
| 
| My guess is that the AS5350 expects the BYE packet through the new UDP 
| port...
| 
| Has anybody found such a problem?
| 
| Thanks
| 
| Victor
| 
| 
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