[cisco-voip] ata 186 using SIP

[Hering, Marc]

I don't know how, but it is possible.  A service called Vonage does it
all the time (the ATA behind the NAT part, but inbound calling works
fine)

<M> 

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Edgar Almonte
Sent: Friday, November 05, 2004 9:28 AM
To: cisco-voip forum
Subject: [cisco-voip] ata 186 using SIP

Hello,

Does anyone know how I can configure a ata186 behind a NAT router to
make and receive calls thru a cisco gateway with a public IP address. I
was able to make outgoing calls thru the ata 186 but I have a PRI on the
gateway and  I would like to assign one of the DID numbers on the PRI to
the Ata186. The ATA is behind a NAT router and the NAT router has a
dynamic public IP on the internet side. I need a way for the ata to
register on the cisco and sennd some kind of keepalive to indicate when
its IP has changed.

Thanks in advance!
Edgar

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