[Asterisk-Users] Qs about FXO/FXS cards

[Victor Rini]

Jim Van Meggelen wrote:
> Frankly, what is most interesting is the fact that your systems are
> trouble-free. Certainly if you were to ask if such systems could be put
> into production, you would probably be advised not to expect much.

One last thing. I have a somewhat special PSTN connection. I subscribe 
to comcast digital phone which is dial-tone through the cable tv 
network! Every installation includes an APC unit that is plugged into 
the subcriber's power to maintain dial-tone in case of a power outage 
but I'd also venture that the subscriber's power is tapped to drive 
ringing as well. Isn't that convenient? Instead of the cable company 
paying the electric utility for driving ring voltage you the subscriber 
do that directly.

> 
> There seem to be a lot of variables with these TDM400s.
> 
> Cheers,
> 
> Jim.
>