1. Is this possible? Can Asterisk serve as a man-in-the-middle
between a
traditional PBX and the telco loops?
Yes, Asterisk can be a PRI client to the telco and a PRI server to
your internal PBX
2. If it's possible, which of the two possibilities above is
better? For us,
rack space and power should not be an issue, we're interested in
what will
be most workable.
I would go for multiple low end servers handling 1 or 2 T1s at a
time. You have g.711 coming in and going out so recording in g.711
won't be too CPU intensive. 23 voice calls at 64kbps would be
2.944mbps (23 ^* 64000 * 2) so you'll need a hard drive/filesystem
that can sustain at least 3mbps writes per T1 in the machine.
3. Once you have the calls recorded, how do you access them? Is it
possible
to use asterisk's logs to correlate calls recordings with specific
information? We're willing to do some custom programming here if
need be.
You should be able to tie the cdr information stored in a mysql
database with the .wav file of the recording. It is all setup in the
extensions.conf file so you can choose the recording naming scheme
there and make it work. You would probably need to develop a web
based app to handle the front end stuf.
4. Has anyone done anything like this before? If so, would you be
interested
in a consulting gig?
I haven't.
One thing to watch out for is the new digium T1 cards that can bridge
bearer traffic in firmware. If that happens the voice doesn't leave
the card and may not be recordable. I'm not sure how Asterisk would
handle that.
Thanks in advance for your responses!
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