What about a line voltage change.  Judging by British systems this is the
standard:
Ring is on audio in line and is capacitive coupled to bell line
When the phone is picked up, BT must know when and thus sense a line voltage
change.

Tim


At 15:42 03/02/97 -0200, you wrote:
>How about detect when the ringing signal stops ?
>
>
>>At 02:55 PM 2/3/97 PST, Clewer,Brian wrote:
>>>Hi all,
>>>     I am making a project which will ring me up if a certain condition is
>>>met.  My problem is, how do you tell (electronically) when someone picks up
>>>the phone at the other end after placing a call?
>>>Thanks for any info,
>>>Brian.
>


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