[asterisk-users] New thread - SIP over VPN

[Cary Fitch]

Last week I did a Microsoft VPM from one XP computer to another via Verizon
broadband wireless.

SIP worked ok, but BLF on a Grand Stream 2010 didn't work. 

In addition to the VPN the phone was behind a NAT router.  The phone was
already set up behind the NAT Router, the only difference was to get the
connectivity via Wireless VPN.  There could have been some missing ports in
the VPN environment.

The audio was good, but there were times it lost clarity, likely to wireless
bandwidth/lag/jitter issues.  I decided that couldn't be my main business
phone.

Cary Fitch