11 Apr
2005
11 Apr
'05
3:46 p.m.
Hi all,
I'm quite sure that it does not exist any command on the Cisco gws to enable symmetric
SIP signalling (neither with bind control/media command)....if you issue 'show ip
sockets', you will see that local tx sip port is a random port != 5060...
Regards,
Verbal
----- Original Message -----
From: "Juha Heinanen" <jh(a)tutpro.com>
To: "Steve Blair" <blairs(a)isc.upenn.edu>
Cc: "Miquel" <miquelcapde(a)gmail.com>om>; <serusers(a)lists.iptel.org>
Sent: Monday, April 11, 2005 3:25 PM
Subject: Re: [Serusers] phone + pstn with ser and cisco gateway
Steve Blair writes:
I've never looked into that but by default
it does not. I thought I would
need "symmtric signaling" in order to define a peer in my Asterisk sip.conf
file but that turned out not to be necessary.
i was asking because of nat detection. it turned out that nathelper
nat_uac_test("3") does not check port number whereas mediaproxy
client_nat_test("3") requires that both ip address and port in via match
source ip address and port. so if call comes from cisco gw, ...
i surfed on cisco's web pages, but could not find any command that would
make gw's signaling symmetric.
-- juha
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