[wdmaudiodev] Re: Audio over IP for a simplified VOIP application
- From: Konjengbam <konjengbam@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Fri, 31 Jul 2009 14:35:30 -0400
Matthias,
Yes, logically this should work except the original intention was to
avoid use of any cables :-). I am now using Widcomm s/w with a
compatible BT dongle to connect to the phone and now the PC acts as a
headset device. The only thing is that I need to have access to their
stack layer somehow (in the process of investigation now) so that I
could allow our other software components to integrate headset
solution within the existing bigger application.
Have a nice weekend.
Best Regards,
JK
On Fri, Jul 31, 2009 at 12:35 PM, Matthias Moetje<moetje@xxxxxxxxxxxx> wrote:
> JK,
>
> this will surely work. Most devices come with a wired headset.
> By modifying the cable you should easily able to connect this
> to a computer sound card!
>
>
> Best regards,
> Freundliche Grüße,
>
> Matthias Moetje
>
> TERASENS GmbH
> Augustenstraße 24
> 80333 Munich
> GERMANY
> ________________________________________
> From: wdmaudiodev-bounce@xxxxxxxxxxxxx [wdmaudiodev-bounce@xxxxxxxxxxxxx] On
> Behalf Of Konjengbam [konjengbam@xxxxxxxxx]
> Sent: Friday, July 31, 2009 4:02 PM
> To: wdmaudiodev@xxxxxxxxxxxxx
> Subject: [wdmaudiodev] Re: Audio over IP for a simplified VOIP application
>
> I was also thinking if we could use normal audio cables between
> windows mobile (if the device exposes one with spk+mic). With this
> approach, I could use TAPI to take the call controls and audio
> manipulations done on the PC. This looks lot simpler and is more of
> hardware than software in terms of audio transfer.
>
> Thanks,
> JK
>
> On Fri, Jul 31, 2009 at 9:53 AM, Konjengbam<konjengbam@xxxxxxxxx> wrote:
>> Thanks Matthias for the sharing your views. I am trying the option of
>> using BT (HF/HS) now and will come back to IP based audio transfer, if
>> at all one is possible. The idea was routing phone calls audio to a
>> desktop PC, without additional hardware on the windows mobile.
>>
>> Best Regards,
>> JK
>>
>> On Fri, Jul 31, 2009 at 1:10 AM, Matthias Moetje<moetje@xxxxxxxxxxxx> wrote:
>>> 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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