[Gllug] Caller ID on a POTS line

[general_email at technicalbloke.com]

On 19/01/11 17:07, James Courtier-Dutton wrote:
> On 19 January 2011 15:05, Walter Stanish
> <walter.stanish at saffrondigital.com> wrote:
>>>> I want to get caller ID info from my POTS line into my computer.
>>> Have you tried putting an old analogue modem on the line, especially one
>>> that supports inbound fax?
>>> I'm sure there was an AT command such as
>>> AT#CID=1
>> Yes, many non-ancient modems will handle this for you.
>>
> Watch out for cheap win-modems that rely on the CPU to do all the
> signal processing.
> For them to work in Linux, some of them require close source blobs
> that might not work with the latest Linux versions.
> That being said, I should not be too hard to write your own "reversal
> and tone sensor" to get caller ID for a win-modem.
> win-modems appear as ALSA sound cards mostly in Linux.
>
> I have not used modems for such a long time now.
> Have you considered VoIP instead?
>
> Kind Regards
>
> James
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This is the think, the internet abounds with tales of people trying and
failing to coax UK caller ID out of various modems, combining that with
the winmodem issue you mention above put me right off the idea. Having
said that another GLUG user reckons they have one which works so fingers
crossed.

I did wonder about voip but I'm not sure it would work out any cheaper.

Roger.
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