[Asterisk-Users] sip show peers - disappearing

[Alfred R. Nurnberger]

My guess would be that the NAT firewall times out and closes the port.
Reopening it from the inside is no problem, but access from the outside gets
blocked.
In order to keep the path open both ways, the client needs to send some kind
of messages with the proper IP/port in regular intervals.

Alfred.

>We have people connecting to an asterisk box over the internet.  They're
>using the x-lite client behind linksys firewalls.   The X-Lite client
>discovers the firewall no problem and connects to Asterisk without a
>problem.  After connecting the agent shows up properly in "sip show
>peers" with the IP address of their firewall, etc.  They can receive
>calls no problem.  After some time goes by... they don't show as
>registered with * any more in the sip show peers.  They can still make
>outbound calls, but can not receive the inbound ones.  Anyone have any
>ideas on this one?

>Thanks,
>Jonathan