[Asterisk-Users] Voice Modem + Soundcard Driver

Anthony Wood woody+asterisk at switchonline.com.au
Tue Jun 3 01:04:20 MST 2003


On Tue, Jun 03, 2003 at 05:47:54PM +1000, Mathew Frank wrote:
> Woody wrote:
> > The problem with using Voice Modems is that they fall into two categories:
> >
> > 1) Hardware Modems which only have half-duplex transmission of voice
> > 2) Soft/Win/Lin modems which are proprietry and don't have asterisk
> drivers
> 
> or 3 - full duplex "real" voice modems such as produced by Banksia in Sydney
> which have been available for years for IVR systems for which only a
> single-duplex channel is available in Asterisk.

Would it be hard to code a full duplex asterisk driver?
Or is it a kernel driver issue?

Oh, I see that you can download linux drivers from Banksia...

> > 2 Phone lines
> > 2 Banksia Wave SP 336 Modems - these have 3.5mm female jacks for
> speaker/microphone
> > 1 Full Duplex Soundcard
> > 4 3.5mm mono male-male audio cables
> > 2 3.5mm stereo male -> 3.5mm female left + 3.5mm female right adapters
> > 1 Linux Box with 2 serial ports and spare PCI slot for Full Duplex sound
> card.
> > Asterisk
> > Programmer
> 
> I had concidered such an approach, till I remembered the iNTRA modems
> mentioned above.   There is actually a question re legality of wiring the
> sound card to the modem - or even audio-coupling to do the same according to
> the wording of the rules AFAIK.   Anyway I did concider your suggestion and

Austel rules?  Seems pretty harsh since Banksia gave me a cable in
the box with my modem.  It's not like I'm breaking open an austel-approved
device and making hardware modifications which would be understandably against
the rules.  Although from what I hear the Austel rules seem to be about "Systems"
rather than "Hardware".  Probably linux drivers for winmodems are not Austel
approved.

> when I posted it a year ago got in an argument with a fellow poster who
> missed my point entirely till the point was lost.

Are there any Australian FXO Asterisk users?  What do they use?  Where do they
buy their hardware?

cheers,
Woody



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