[Asterisk-Users] Possible Asterisk Notify Bug

[Kurt]

I noticed when my Cisco device sends a SUBSCRIBE message to Asterisk
for voice mail subscription.  The Asterisk server will send the wrong
call ID back.  Thus, the Cisco sends a 481 back to the Asterisk.

I believe the below section in RFC 3265 is relevant: 

3.3.4
NOTIFY requests are matched to such SUBSCRIBE requests if they
   contain the same "Call-ID", a "To" header "tag" parameter which
   matches the "From" header "tag" parameter of the SUBSCRIBE, and the
   same "Event" header field.  Rules for comparisons of the "Event"
   headers are described in section 7.2.1.  If a matching NOTIFY
request
   contains a "Subscription-State" of "active" or "pending", it creates
   a new subscription and a new dialog (unless they have already been
   created by a matching response, as described above).


Below is a portion of the trap I obtained from the Asterisk Server.  A
complete trap can be found at 
http://www.pasewaldt.com/notify.html

Sip read: 
SUBSCRIBE sip:2486 at 192.168.0.100:5060 SIP/2.0
Via: SIP/2.0/UDP  192.168.0.1:5060;branch=z9hG4bKFC2
From: "2486" <sip:2486 at 192.168.0.1>;tag=6C30-149
To: <sip:2486 at 192.168.0.100>
Date: 
Call-ID: 2C1ED0F6-2BDE11D6-80048294-A080CC2F
CSeq: 101 SUBSCRIBE
Timestamp: 1089723760
Contact: <sip:2486 at 192.168.0.1:5060>
Event: message-summary
Expires: 600
Accept: application/simple-message-summary
Content-Length: 0
13 headers, 0 lines
^Dasterick*CLI> 
Using latest SUBSCRIBE request as basis request
Sending to 192.168.0.1 : 5060 (non-NAT)
Looking for 2486 in voice-mail

Reliably Transmitting:
NOTIFY sip:2486 at 192.168.0.1 SIP/2.0
Via: SIP/2.0/UDP 192.168.0.100:5060;branch=z9hG4bK19c0b453
From: "asterisk" <sip:asterisk at 192.168.0.100>;tag=as288443e6
To: <sip:2486 at 192.168.0.1>
Contact: <sip:asterisk at 192.168.0.100>
Call-ID: 57f3d594208235d27e796fd27db42c1b at 192.168.0.100
CSeq: 102 NOTIFY
User-Agent: Asterisk PBX
Event: message-summary
Content-Type: application/simple-message-summary
Content-Length: 37
Messages-Waiting: yes
Voicemail: 7/0
 (no NAT) to 192.168.0

Kurt



		
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