MartyConnelly
martyconnelly at shaw.ca
Mon Nov 1 13:00:11 CST 2004
From a few years back
You will have to use TAPI, your modem need's to support caller ID
Ughh, you are in Italy so you may have to check the format of caller id
North America had half a dozen standards from the various Telco's in Mid
90's
It was a mess.
It is essentially about 55 bytes of data being sent between the first
and second ring of the phone
It can be more data, there are a couple of formats some included the
callers name and blocking info in addition to the number.
I can't remember if there is now an established ISO standard
I did this back in 99.
What I would do is try the trial version of Mountain Sys on your
telephone system and modem
It is only $15 a client, but you could roll your own code via Tapi after
getting a format from your
Telco but maybe they have standardized format by now in Italy.
Companies that seem to handle callerid connections to Access.
Mountain Systems http://www.mtnsys.com
CallAudit Software has sample Access 97 & 95 database with
trial software that connects thru DDE.
There are a lot of others.
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From Mountain System FAQ buried in there
How to Test a MODEM for Caller ID Support
Caveats.
Necessary equipment
* Caller ID Service From your local telephone company
* A Voice MODEM or hardware device that supports Caller ID
Just about every MODEM disables Caller ID as the default.
For most MODEMs, the string AT#CID=1 or AT#CLS=8#CID=1 will enable
Caller ID.
If Caller ID is not working, you will only see the word RING for
each incoming ring.
The most common result, when Caller ID data works, is the following:
RING
DATE = xxxxx
TIME = xxxx
NMBR = xxxxxxxxx
NAME = xxxxxxxx
RING
RING …
There are other formats as well. The key point is that other data
generally appears between the first and second rings.
Some telephone companies, especially in Canada, ship Caller ID data in
different formats, Check the software handles this.
TAPI support for Caller ID was added after Windows 95 was released.
Microsoft has an updated version of UniModemV on their Web page that
includes Caller ID support. The .INF file for your MODEM also needs to
modified to take advantage of this support, and some modems do not
yet have this capability.
Windows NT 3.X does not include any support for TAPI. Although Windows
NT 4.0 does.
handyman at actcom.co.il wrote:
> Hi,
>
> I'm interested in somehow retrieving a CallerID number from my modem,
> and then displaying the caller's information(taken from my database)
> on screen. Has anyone ever done anything like this, or can point me
> in the right direction
>
> Thanks,
>
> Gershon Markowitz
> mailto:Handyman at actcom.co.il
>
--
Marty Connelly
Victoria, B.C.
Canada