On Wed, Jun 04, 2003 at 09:15:25AM +0300, Dan wrote: > Hi Woody, > > As it is a software modem, it can do full duplex. > .
If it can do full duplex, then no-one has pointed out to me why a driver can't be written for it. > > Also, I don't think Asterisk has drivers for this sort of thing, > > as most of the hardware is half-duplex. > > When asterisk is started, I see something like this in the log: > > [chan_modem_bestdata.so] => (BestData (Conexant V.90 Chipset) VoiceModem > Driver) I guess it's a specific chipset for certain hardware modems. > and > [chan_phone.so] => (Linux Telephony API Support) > == Parsing '/etc/asterisk/phone.conf': == Parsing > '/etc/asterisk/phone.conf' I guess we'll have to have a look into the Linux Telephony API, perhaps it is only half-duplex. > Can those two be used for a voice modem? Probably if you have a Conexant V.90 Chipset. chan_phone I don't know. > There is a modem_bestdata.conf file somewhere? Don't know. > > Thanks, > Dan > > > ----- Original Message ----- > From: "Anthony Wood" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, June 04, 2003 2:09 AM > Subject: Re: [Asterisk-Users] Voice Modem + Soundcard Driver > > > > 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 -- Woody _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
