1 - Can anyone recommend a SIP to PSTN Gateway?
(I'd like to connect using a
T1.) Preferably Freeware on Linux. Any comments on Asterisk? I came across
it, but have not really looked into it yet.
We use asterisk together with ser here and it works fine. Also the T1/E1
cards for asterisk from digium are very inexpensive.
(Of course you can use any other PRI hardware supported by linux too)
It's quite easy to use and quite powerful as a PBX.
Have a look at it
Rainer
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http://graphics.cs.uni-sb.de/VoIP/