Re: Modem to Modem Connection

Tech-Archive recommends: Speed Up your PC by fixing your registry

"jcl" <res1vo1d@xxxxxxxxxxx> schrieb im Newsbeitrag
news:Sedye.9497$H64.4345@xxxxxxxxxxx
> I am a microsoft .net developer but I am a TAPI newbie. I wonder if the
> following idea is possible .
>
> I have a home device that connects to the phone line. Once a day, it dials a
> outside phone number and transfers status data to the outside modem. I want
> to intercept these phone calls with my computer and here is my idea:
>
> 1. Disconnect this home device from the telephone phone line in the house
> and Connect it directly to the desktop computer's modem with a regular phone
> cable.
> 2. When the device is ready to call the outside number, the modem of the
> desktop computer produces a dial tone so that the device thinks that it has
> grasped the phone line.
> 3. When the device dials the number, the computer modem produces a answer
> tone.
> 4. The device and the computer modem hand shake and the device sends out the
> data. The computer modem receives the data
> 5. The device disconnects the phone call thinking that it has completed the
> data transfer successfully.
>
> I wonder if the above idea possible in TAPI. If yes, how should I implement
> it?

Chris,
this doesn't work.

1. You can't connect two telephony devices (like phones, modems etc) directly.
Who will provide voltage, signalling etc.?
You need either a central office or a PBX in between just for this but this
won't help you on intercepting calls.

2. Modem can't produce dialtone.

Btw. what kind of "home device" are we talking about?

--
Best Regards
Andreas Marschall
Microsoft MVP for TAPI / Windows SDK
TAPI / TSP Developer and Tester
http://www.I-B-A-M.de/Andreas_Marschall's_TAPI_and_TSPI_FAQ.htm
* Please post all messages and replies to the newsgroup so all may
* benefit from the discussion. Private mail is usually not replied to.
* This posting is provided "AS IS" with no warranties, and confers no rights.



.

Relevant Pages

  • RESOLVED: RegisterCallNotifications for Multiple Modems?
    ... Second, As all of the TAPI gurus here pointed out, it is neccessary to ... with modem based TAPI lines as using just Monitor does not result in any ... BSTR* ppName = CXT AC-Link Modem for Intel ...
    (microsoft.public.win32.programmer.tapi)
  • Re: RESOLVED: RegisterCallNotifications for Multiple Modems?
    ... If you get the caller ID when you first learn about the call and then ... isn't being provided in these cases by the modem TAPI Service Provider ... Best I can suggest is to look at the low level modem log (check Andreas' ... It sounds sensible what you write that CID info might be available prior ...
    (microsoft.public.win32.programmer.tapi)
  • Re: Future or TAPI
    ... duplex and that the Unimodem driver only supported half duplex operation. ... And when the modem disconnects it does eventually know ... Modems don't have hardware support ... > TAPI application. ...
    (microsoft.public.win32.programmer.tapi)
  • Re: Getting Fax tone on next incoming call using TAPI
    ... I am using voice modem/Data modem and UniModem.TSP ... I basically initialize TAPI, register events I am ... This code is adapted from sample in P-SDK or SAPI sample, ...
    (microsoft.public.win32.programmer.tapi)
  • Re: TAPI and VS.NET 2003
    ... the computer I have the modem on only has the ability to ... probably the 3rd party application has messed up your system. ... You should rather create the TAPI part as a dll in C++ or VB and use ... The intellisense lists all the ITxxx interfaces but not ITxxx2. ...
    (microsoft.public.win32.programmer.tapi)