On Tue, Jun 03, 2003 at 11:09:28AM +0300, Dan wrote: > Hi, > > I have an USB voice modem which does not need to be connected to the > soundcard in order to build an answering machine. > It appear in the system as another sound card. > I have tested a free Answering machine application and it works great. > The modem is very cheap (paid around 25 USD for it) and has linux drivers, > including the source files: > http://www.smlink.com/products/SmartUSB56.htm for description > and > http://www.smlink.com/download/Linux/slmdm-2.7.14.tar.gz > for the linux driver, including source files. > > Can this be used as a FXO interface for Asterisk?
The key is can the modem do full-duplex voice (sound in both directions at the same time). An answering machine is half-duplex: first, the sound is sent from the machine to the caller, then, the sound is sent from the caller to the machine. Also, I don't think Asterisk has drivers for this sort of thing, as most of the hardware is half-duplex. But I am only a newbie. cheers, Woody > > Best regards, > Dan > > ----- Original Message ----- > From: "Mathew Frank" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Tuesday, June 03, 2003 10:47 AM > Subject: Re: [Asterisk-Users] Voice Modem + Soundcard Driver > > > > > 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. > > > > > 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 > > 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. > > > > Mathew > > > > _______________________________________________ > > Asterisk-Users mailing list > > [EMAIL PROTECTED] > > http://lists.digium.com/mailman/listinfo/asterisk-users > > > > > > > _______________________________________________ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users -- Woody _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
