Hi,
the problem is that Cisco 7905G do not support STUN servers so it is not
able to know on which port the request is sent out after NAT. It is a stupid
SIP phone, in my opinion, to be used as SIP phone behind nat. Eventually you
need a router that make symmetric nat so the 5060 internal port will be
translated as 5060 out port but you will need in any case to open ports for
RTP and 5060 fr incoming calls.
Bye,
Marcello
----- Original Message -----
From: "Alberto" <alberto.ipt(a)telefonica.net>
To: <serusers(a)lists.iptel.org>
Sent: Tuesday, September 27, 2005 11:00 AM
Subject: [Serusers] cisco 7905G
Hi,
I have the next scheme:
7905G ------- NAT ------- Internet ------ SER+mediaproxy
When the 7905G sends a INVITE the ser responds:
Status: 407 Proxy Authentication Required.
This is right, but the destination port this packet not is right because
the ser sends the packet with
destination port 5060 (private port) and not the (public port). If I open
this port all it is right, I do not
want to open no port.
This single problem happens to me with 7905G (no linksys, no X-Ten, ...).
I do not understand what it is happening.
Thanks for your aid.
--
Alberto
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