That's what the sound modem does. Converts the bit stream into audio tones to send into the mic and converts audio tones into a bit stream for the computer.
For instance, the command: sethdlc -p -i sm1 mode sbc:afsk1200 io 0x388 irq 10 dma 1 serio 0x2f8 will set you up with an sm1 device using a "s"ound "b"laster "c"ard with 1200 baud tones and a sound card at 0x388, irq 10, dma1 and using serial io port 0x2f8 to key the push-to-talk. You follow this up with another command: sethdlc -i sm0 -a txd 100 slot 50 ppersist 128 full to set up Txd as 100, slottime as 50, ppersist as 128, and full duplex. You can then use the smdiag and smmixer commands to set audio levels. To tie it into the ax25 module you would use the ifconfig command: /sbin/ifconfig sm1 hw ax25 AB0WR-15 up this will tie a callsign to the sm0 device and turn it up. You will then have to set up an /etc/ax25/axports to use the device. As well as setting up your ax25 routing. I know this will work with sound blaster compatibles and Windows Sound System compatible cards. If your card isn't one of these there is another way to build a user based sound card driver. I haven't really looked at that. tim ab0wr --- In [email protected], "N6CRR" <[EMAIL PROTECTED]> wrote: > > --- In [email protected], "tg6124" <tgorman2@> wrote: > > > > Have you looked in the AX25-HOWTO? I think it tells you in there how > > to use the sound card modem software that is built into the Linux > > kernel as part of the AX-25 module. > > I may be wrong, but I think the Linux Kernel in most distributions > incorporates the higher layers of the stack, but you need something > like AGWPG to handle the conversion from audio to digits, in effect a > bit sync. > > I'm not sure how AGWPG runs in Wine under Linux, but in native Windows > it works fine, used it with MixW before. I'm trying to avoid the whole > Wine deal and looking for an implementation of the same function in > native Linux. > > Appreciate your pointer however...Thanks > > Steve > Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
