asterisk users - Aug 2007 - Asterisk, PAP2T and 2Wire DSL router

Here is Mexico the phone company uses a DSL router from 2Wire which in
my opinion is quite bad.  I am having problems getting PAP2T adapters
connected to Asterisk using these routers.  They connect fine but after
about 5 minutes I get a message on the Asterisk console that the ATA is
unreachable.  So far the only way I have found for the ATA to stay
connected more than five minutes is to put it in the DMZ but this is not
always possible either because the DMZ is already in use by some other
computer, they do not use DHCP and this router cannot assign a DMZ if
you do not use DHCP or simply because you have more than one ATA on the
network.

	Does anyone know of a tweak to this router that will allow the ATA to
remain connected to Asterisk?  This only seems to affect Linksys and
Sipura ATAs because when you have phones on the same network
(Grandstream) those do not lose the connection to the server.

-- 
Telecomunicaciones Abiertas de M?xico S.A. de C.V.
Carlos Ch?vez Prats
Director de Tecnolog?a
+52-55-91169161 ext 2001
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Carlos,

Do you have the NAT keepalive options enabled on the PAP2T?  It sounds
like the router is timing out the connection and dropping the port
mapping.

--
Eric Chamberlain, CISSP
Chief Technical Officer
Voxilla - http://voxilla.com/
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of Carlos Chavez
> Sent: Thursday, August 16, 2007 9:09 AM
> To: Asterisk
> Subject: [asterisk-users] Asterisk, PAP2T and 2Wire DSL router
> 
> 	Here is Mexico the phone company uses a DSL router from 2Wire
which
> in
> my opinion is quite bad.  I am having problems getting PAP2T adapters
> connected to Asterisk using these routers.  They connect fine but
after
> about 5 minutes I get a message on the Asterisk console that the ATA
is
> unreachable.  So far the only way I have found for the ATA to stay
> connected more than five minutes is to put it in the DMZ but this is
not
> always possible either because the DMZ is already in use by some other
> computer, they do not use DHCP and this router cannot assign a DMZ if
> you do not use DHCP or simply because you have more than one ATA on
the
> network.
> 
> 	Does anyone know of a tweak to this router that will allow the
ATA
> to
> remain connected to Asterisk?  This only seems to affect Linksys and
> Sipura ATAs because when you have phones on the same network
> (Grandstream) those do not lose the connection to the server.
> 
> --
> Telecomunicaciones Abiertas de M?xico S.A. de C.V.
> Carlos Ch?vez Prats
> Director de Tecnolog?a
> +52-55-91169161 ext 2001