[asterisk-users] SIP over VPN -- no audio to other remote/VPN connected phones

[Ryan McCormack]

Hello,

I am having a problem with my current SIP over VPN setup.

We have a server running asterisk at our office.  All the phones in the 
office are on the same network / local to this server.  We also have two 
employees with home offices using SIP phones over VPN to connect to the 
asterisk server.  These phones have no problem with calls to the phones 
in the office, however there is no audio when trying to place a call 
from one remote phone to the other.

I'm assuming this is a routing issue, but I have no been able to come up 
with a solution.

Thanks for any advice.