I would LOVE to see a howto.
Specifically i wish to use an SME gateway with 3 remote VPN sites (remotes have a hardware VPN router).
I would love to have Asterisk on the VPN gateway machine, with maybe 2 or 4 inbound analogue lines with a small number range, with voip handsets at each of the remote sites.
Is it possible to use this over the VPN? I want the remote sites COMPLETELY secured to only use VPN traffic to and from the SME gateway, they have no web access etc, the VPN will be over adsl - is 256kb adsl to each remote site sufficient for this?
Does anyone have any expereince in running the VPN network an thre PBX network together? could you post your experriences? or links to furher info?
I have posted some questions on the topic here
http://forums.contribs.org/index.php?topic=20662.msg81486#msg81486