Full Duplex Modem

[liat hollander]

Hi
I am trying to write a program that allows the user to place a call
and talk over the phone using only the microphone and speakers.

I bought an external USB data/fax/voice modem, but when I place the
call,
using TAPI 3, I can only hear the other side but the other side cannot
hear me.

I've looked for days for an answer, but the only thing I discovered is
that I have a half duplex modem.
Is that the only problem?
Which USB modems supports full-duplex audio???
(I need USB modem since I'm using a laptop)

[Andreas Marschall [exMVP TAPI]]

Post by liat hollander
Hi
I am trying to write a program that allows the user to place a call
and talk over the phone using only the microphone and speakers.
I bought an external USB data/fax/voice modem, but when I place the
call,
using TAPI 3, I can only hear the other side but the other side cannot
hear me.
I've looked for days for an answer, but the only thing I discovered is
that I have a half duplex modem.
Is that the only problem?
Which USB modems supports full-duplex audio???
(I need USB modem since I'm using a laptop)

Liat,
please see:
http://www.tapi.info/default.aspx/TAPI/UnimodemFullDuplexSupport.html

--
Best Regards
Andreas Marschall
Microsoft MVP for TAPI / Windows SDK / Visual C++ 2003-2008 TAPI /
TSP
Developer and Tester My TAPI and TSPI FAQ:
http://www.I-B-A-M.de/Andreas_Marschall's_TAPI_and_TSPI_FAQ.htm
My Toto Tools (a collection of free, mostly TAPI related tools):
http://www.i-b-a-m.de/Andreas_Marschall's_Toto_Tools.htm
TAPI development around the world (Frappr! map):
http://www.frappr.com/TAPIaroundTheWorld
* 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.

[liat hollander]

Liat,
please see:http://www.tapi.info/default.aspx/TAPI/UnimodemFullDuplexSupport.html

Thanks Andreas for the quick response.
I've read this article and many more, I think my problem is that my
modem does not support Full-Duplex voice.

I'm looking for a modem who does, can you suggest any?
Is there any way to swap the direction of half duplex, I mean can it
be done programmaticly?

Now, I can only hear the voice of the other side on the computer, I
need the other side to hear the me = computer.
Thanks

[liat hollander]

BTW, I'm using "Data Fax ACF USB Modem with SmartCP" with conexant
chipset.

[liat hollander]

To make things more clear.
I'm looking for a true full duplex audio/voice modem, I prefer USB
over PCI model.

[b***@gmail.com]

Post by liat hollander
To make things more clear.
I'm looking for a true full duplex audio/voice modem, I prefer USB
over PCI model.

Liat, were you ever able to find a solution for this?

[Andreas Marschall [exMVP TAPI]]

On May 9, 11:53 am, liat hollander <***@gmail.com> wrote:
Liat,

Post by liat hollander
Thanks Andreas for the quick response.

Liat, you are welcome.

Post by liat hollander
I've read this article and many more, I think my problem is that my
modem does not support Full-Duplex voice.
I'm looking for a modem who does, can you suggest any?

Sorry, no. I'm not using any modems.

Post by liat hollander
Is there any way to swap the direction of half duplex, I mean can it
be done programmaticly?

Yes, you can try to only render *or* capture at the same time.

--
Best Regards
Andreas Marschall
Microsoft MVP for TAPI / Windows SDK / Visual C++ 2003-2008 TAPI /
TSP
Developer and Tester My TAPI and TSPI FAQ:
http://www.I-B-A-M.de/Andreas_Marschall's_TAPI_and_TSPI_FAQ.htm
My Toto Tools (a collection of free, mostly TAPI related tools):
http://www.i-b-a-m.de/Andreas_Marschall's_Toto_Tools.htm
TAPI development around the world (Frappr! map):
http://www.frappr.com/TAPIaroundTheWorld
* 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.

[liat hollander]

Post by Andreas Marschall [exMVP TAPI]
Yes, you can try to only render *or* capture at the same time.

Great, I'm using IMediaStream as the sample tapisend/tapirecv, What I
need (with the ITerminal or IStream) to do to switch between send only
and receive only?