[Asterisk-Users] SER Asterisk and NAT

[Adrian A]

I have been trying to setup Asterisk in combination with SER on the
same box as a PBX with SIP clients.  I would like to have it available
for both external and internal users so I have the box setup with
external and internal IP address.  I am running into all kinds of
troubles with this configuration, specifically with forwarding
voicemail to Asterisk from SER.

Does anyone have a similar setup that is working?