[cisco-voip] SIP disposition after 488 to T.38

[Fedorov, Konstantin]

Hi,

Can you provide full capture of SIP signaling.
Because now its difficult to say what is the reason jf 488 message.

488 message mean - Not applicable here.  So SIP box doesn't like
re-invite

-----------------------
Sincerely Yours,
Konstantin Fedorov
-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of roy
Sent: Thursday, June 28, 2007 8:36 AM
To: cisco-voip
Subject: [cisco-voip] SIP disposition after 488 to T.38

Hi List,

Here's a setup and packet capture flow:

SIP box				Cisco
[a at b.com]			[x at y.com]
INVITE	x at y.com	--------->	
		<---------	100 TRYING
		<---------	183 Session Progress
		<---------	200 OK
ACK	x at y.com	--------->
		<---------	re-INVITE a at b.com to t.38
488		--------->
		<---------	ACK
...
...

Given that only available codec of g.729 at Asterisk side, what messages
are to be expected after the T.38 re-invite has been made and was
rejected with 488?

Thanks,

Roy

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