Problem:
Can dial voice calls using internal modem and a variety of dialer
programs including Phone Dialer and ACT. Call is connected and I can
hear voice from the called phone. Called phone cannot hear my voice.
Data:
1. IBM Thinkpad A31 running Windows 2000 professional.
2. Phone line plugged into RJ11 jack on rear of computer.
3. Phone line works both ways when plugged into a normal handset.
4. Have tried two different headsets: One is a conventional analog
headset plugged into the headset and mic inputs, the other is a USB
digital headset.
5. Can record into and play from Sound Recorder app using either
headset.
6. Other applications also work correctly with either headset.
7. Installing latest BIOS and modem drivers did not cure problem.
8. It is possible to play .wav files successfully to dialed calls
(using a program called IVM)
9. IBM tech support was not able to help or provide a coherent
explanation.
10. I'm an electrical and software engineer with 25 yrs experience. I
believe I've tried every possible Sound and device setting available
through Windows.
11. I'm stumped! |
Request for Question Clarification by
aht-ga
on
23 Sep 2003 17:26 PDT
mellis-ga:
In order to use a v.92 modem for telephony, several requirements must
first be satisfied.
First, the driver for the modem (and to a certain extent, the
hardware) must support telephony.
Second, you need to use a telephony application that knows how to take
a Windows audio input source (in this case, the mic on your headset),
and connect it to a Windows audio output (in this case, the modem
voice output channel).
Third, the audio input source must not be muted in the Volume Control
applet (which you have already and undoubtedly checked).
So, a couple of questions for you:
Do the applications that you have tried support telephony? Easiest way
to tell is to see if it lets you choose an audio input source.
Secondly, which modem do you have in the A31? There are several
different options available from IBM. Please look at the Control
Panel>Modems applet and let me know what the modem is.
Thanks,
aht-ga
|
Clarification of Question by
mellis-ga
on
24 Sep 2003 06:26 PDT
>Do the applications that you have tried support telephony? Easiest
way
to tell is to see if it lets you choose an audio input source.
Let's start with Phone Dialer. The Options dialog has a tab labeled
"audio/video". Within that tab, a button labeled "Sound Settings"
brings up the Windows "Sound and Multimedia Properties" dialog. The
preferred and only device offered in the Playback and Recording
dropdowns is "SoundMAX Digital Audio" which is the onboard sound
chipset. I have confirmed that the microphone volume control is
selected and the slider is all the way up.
>Secondly, which modem do you have in the A31?
It is the Agere Systems AC'97.
|
Request for Question Clarification by
aht-ga
on
29 Sep 2003 12:09 PDT
mellis-ga:
My apologies for the delayed response.
I have not been able to find any information to indicate, one way or
another, any incompatibility issues between the applications you
mention, and the Agere AC'97 modem.
The AC-97 modem uses the same audio encoder hardware as the audio
system, so the fact that the only option for Playback and Recording is
the SoundMAX system is not a problem.
Can you please confirm for me that you have "Phone Line" as one of
your selected Playback devices, in the Windows Volume Control
application, and that it is enabled? If "Phone Line" is not visible,
go to the Options > Properties tab, and select it from the scroll list
for Playback devices.
Thanks,
aht-ga
|
