27 Dec
2004
27 Dec
'04
11:12 a.m.
PIX firewalls cant reroute using the same interface, dunno if it helps but
is one difference with routers....
----- Original Message -----
From: "sekchye goh" <sekchye(a)gmail.com>
To: <serusers(a)lists.iptel.org>
Sent: Monday, December 27, 2004 4:54 AM
Subject: [Serusers] problem for Cisco 7912 ip phone behind pix firewall
Hi there!
We have two cisco 7912 ip phone using SIP firmware behind Cisco PIX
firewall. These two phone is configured to register to a SER proxy which
is on
the public Internet. These two Cisco 7912 ip phones
are PATor NAPT
to a single IP.
The problem we have is when these two phones call each other, the
two party cannot hear each other's voice.
If we replace the PIX firewall with a Cisco router, there is no such
problem.
Does anyone encounter this problem before? I am clueless on how to
resolve this problem. Any pointers will be much appreciated.
Thank you very much!
Best regards
sekchye
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