Bob Chiodini wrote:
You might put 600 ohm/600 ohm matching transformer to isolate the port
and the amp. Should also maintain loop current if needed.
Bob...
FXO ports do not generate loop current, they detect loop current from
the Central office.
Think of an FXO as a controllable switch and matching transformer.
An FXO port will give Asterisk/Zaptel a red alarm without loop current,
so that probably won't work for a PA system that doesn't supply battery.
What's wrong with using the (usually) unused sound card built into many
machines?
John Novack
Jerry Jones wrote:
use an fxo interface and 600ohm input on amp
On Jun 11, 2006, at 9:53 AM, Thomas Kenyon wrote:
Doug Lytle wrote:
Thomas Kenyon wrote:
I need to be able to connect an old PA system to an asterisk box,
which
basically works as a couple of amplifiers taking an analogue phone
signal and playing whatever it produces out of some speakers.
There is
Does the connection use 2 screws for analog inputs?
Yup.
If this is the case, you could get a cheap Grand Stream BT102 and pull
the speaker leads off and connect it to that box. The GS can be setup
to auto answer.
Doug
I'm going to try the suggestion in the Bat Phone thread above, bringing
one of the PAP2s out of retirement.
Wish me luck.
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