[Asterisk-Users] Nat, SIP, Realtime problem

[Hall, Eric M.]

Group:
 I have a customer that is running the following

Asterisk CVS-HEAD dated 2005-08-18
WhitBox Linux respin 2 
mysql  Ver 11.18 Distrib 3.23.58
Cisco 7960G

We are using the real-time drivers for sip and everything is working
great.
They have a few employees that use the phones from home on a RR or DSL
line.
The problem is if they make a call everything works great they hang up
and are able to get inbound calls. If they do not make a call for 5 or
10 mins they are unable to get inbound calls. If they dial out again its
all working for another 5 or 10 mins. This does not happen to all remote
people just a few.


Anyone have any ideas what the heck is going on with this?

Thanks for your time.