[asterisk-users] OT - Do analog gateways detect a phone is plugged in or out ?

[randulo]

>> > Is it usual for analog gateways to detect when an analog phone is
>> > plugged in or out ?
> It certainly would seem "possible" and would be a great feature request.
> There probably is no circuitry existing to do it, but I would assume that
> ohms, volts, or something could be measured while sending a small amount of
> voltage down the FXS lines.

I read this with interest. The geek in me finds it amazing that they
don't detect something plugged in. YOu think in the old days
especially, it'd be easy based on what Steve says and that any
proprietary system would do this to aid in setup and debugging, alarms
etc.

Nowadays, it might be a lot harder, although for SIP phones there are
ways to detect any of the common ones. Druid does this during setup,
for example.

/r