PBX (or something) for modem testing

[Jim Brain]

To continue validating modem functionality, I think it makes sense to 
set up a closed loop phone system in my lab that will function well 
enough to allow modems to connect to each other (dial tone, ringing, 
busy signal, etc.).

I know I can probably whip something up with a 9 v battery and a piece 
of cable with rj11s, but I think that will fall short.

That said, I went out to eBay to see if I could source a 2-8 line 
something to help, and got smacked around with my lack of telephone 
system knowledge.

So, any ideas (or links to eBay auctions) of brands/models/etc. I should 
focus on?

Also, if anyone has any modems lying around gathering dust, I probably 
should source a few more models. tcpser handles Hayes "+++" spec 
correctly, but I should probably support TIES as well, to cite one example.

Jim

-- 
Jim Brain
brain at jbrain.com
www.jbrain.com