> b) If someone calls me, then how can I find out his phone
> number before I pick up the phone?
You will need CallerID. This info is sent between the first & second rings
(I think). You ought to be able to buy modems that recognise this info. Or
you can hunt for a CallerID unit that displays this info as the phone is
ringing.
> c) How can I record a phone conversation (that is, to act
> as an answering machine)?
Certain voice modems allow you to capture the conversation. I used to have
one which, through its built in software, captures the voice into a SND
file. I think the software also acts as a voice mail answering machine.
For a heavy duty application, you are best to get a voice mail card - most
models can handle multiple lines.
> If that is
> too difficult, then how can I at least play the conversation
> through the speakers (that is, through
> my sound card), while the conversation is taking place (live)?
There are several ways to do this, but I think the easiest is to buy a phone
magnetic pickup. This picks up the voice signals. You can connect the
output of the pickup to a preamp/amp and to speakers.
If you employ a technique that connects directly to the phone line, you will
basically need to get a telepermit for your equipment - and you will need to
be aware of the numerous regulations that govern such equipment.
Regards,
Dennis.
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