[wdmaudiodev] Re: Audio over IP for a simplified VOIP application
- From: Matthias Moetje <moetje@xxxxxxxxxxxx>
- To: "'wdmaudiodev@xxxxxxxxxxxxx'" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Fri, 31 Jul 2009 07:10:56 +0200
JK,
The communication between the radio unit and the device
is done through a serial connection. On normal Windows
OS, audio data (from voice modems) is transferred
over the serial connection as well, but not on Windows
Mobile.
Sure it's not hardwired between the Radio Unit and the
speakers/mic, but but to some mixer input on the device
instead.
The problem is that this seems to be device specific.
Even if you would be able to create some low level
driver it would work for specific devices only.
AFAIK there is no generic solution and even getting
the required support/information from a manufacturer
to implement a device specific solution seems to be
very hard :-(
Best regards,
Freundliche Grüße,
Matthias Moetje (MVP TAPI)
______________________________________________
TERASENS GmbH Phone: +49.89.143370-0
Augustenstraße 24 Fax: +49.89.143370-22
80333 Munich e-mail: info@xxxxxxxxxxxx
GERMANY Web: www.terasens.com
______________________________________________
> -----Original Message-----
> From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-
> bounce@xxxxxxxxxxxxx] On Behalf Of Konjengbam
> Sent: Donnerstag, 30. Juli 2009 19:51
> To: wdmaudiodev@xxxxxxxxxxxxx
> Subject: [wdmaudiodev] Re: Audio over IP for a simplified VOIP application
>
> Matthias,
>
> Thanks for your reply. I was wondering, if it is really hardwired all
> the way between radio and audio device, how come smartphones would
> have audio gateway (Bluetooth) implementations. I guess there has to
> be some sort of kernel drivers. Perhaps, hijacking the modem audio may
> offer an alternative (or may be the right way to do) - filter driver
> may be???
>
> Regarding TAPI, I agree completely. There are even RAS APIs as well.
>
> Thanks,
> JK
>
> On Thu, Jul 30, 2009 at 10:40 AM, Matthias Moetje<moetje@xxxxxxxxxxxx> wrote:
> > JK,
> >
> >
> >
> > on Windows Mobile phones you can use TAPI to make phone calls
> >
> > but there is no way to access the audio streams programmatically.
> >
> > (Instead audio between the Radio Unit and the device is hardwired)
> >
> >
> >
> > Best regards,
> >
> >
> >
> > Matthias Moetje (MVP TAPI)
> >
> > TERASENS GmbH
> > Augustenstraße 24
> > 80333 Munich
> > GERMANY
> >
> >
> >
> > Phone:
> > Fax:
> > e-mail:
> > Web:
> >
> > +49.89.143370-0
> > +49.89.143370-22
> > info@xxxxxxxxxxxx
> > www.terasens.com
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >> -----Original Message-----
> >
> >> From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-
> >
> >> bounce@xxxxxxxxxxxxx] On Behalf Of Konjengbam
> >
> >> Sent: Montag, 27. Juli 2009 22:56
> >
> >> To: wdmaudiodev@xxxxxxxxxxxxx
> >
> >> Subject: [wdmaudiodev] Audio over IP for a simplified VOIP application
> >
> >>
> >
> >> Hi Guys,
> >
> >>
> >
> >> I know this kind of question such a routing smartphone's audio to Desktop
> >> PC
> >
> >> for call controls and handling must be one of old discussions. I couldn't
> >> find
> >
> >> the old topics from the archive. Kindly let me know the thread, if it
> >> exists.
> >
> >>
> >
> >> The idea is to be able dial calls from PC via the smartphone's GSM. I
> >> would
> >
> >> assume TAPI on smartphone could do this task with some communication
> >
> >> mechanism between the two devices. For routing the audio, I would guess
> >
> >> we could use WaveForm Audio on both systems and do the routing via UDP.
> >
> >> Yes, TCP/UDP connections would be available.
> >
> >> On Windows PC, perhaps ASIO could be employed as a development model.
> >
> >> Please advise and share your thoughts. I would not like to do kernel
> >
> >> developments unless absolutely required.
> >
> >>
> >
> >> The application is not intended for a full VOIP application. I just want
> >> to use
> >
> >> the phone's cellular network but taking call controls (including audio)
> >> over a
> >
> >> desktop PC while the smartphone is still in the vicinity.
> >
> >>
> >
> >> Help appreciated.
> >
> >>
> >
> >> Thanks & Regards,
> >
> >> JK
> >
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> >
> >>
> >
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> >
> >
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