Thanks, Dharmen. I'm using ALSA as far as I know.? I certainly use alsamixer to adjust the volume controls on the mic & speaker, and I use arecord and aplay successfully too.? When I run pjsua I get "PortAudio sound library initialized", etc, and I can talk to a colleague with the same setup on their PC.? We're both using Logitech ClearChat Comfort USB headsets which worked without any need for customisation.? I tried on-board sound and 3 different PCI sound cards and had poor sound quality or no Linux driver support as a result.? I also got some interference when my video card changes the screen image in screensaver mode.? The USB headsets have not given any of these problems so we'll continue with them for the present. Anyway, thanks for your hints.? I didn't know about sndinfo (which reports "pasound.c Opened device /dev/dsp(OSS)" when pjsua is not running).? So I'm not sure about whether pjsua uses ALSA or OSS but would be surprised it is OSS. It will take me a few weeks to get to the next stage of having several sound cards in one PC, so I'll probably go quiet on this thread now. Jeffrey --- On Tue, 23/3/10, Dharmen Sheth <dsheth at konverge.com.my> wrote: From: Dharmen Sheth <dsheth@xxxxxxxxxxxxxxx> Subject: Re: Multiple sound cards and pjsip To: "'pjsip list'" <pjsip at lists.pjsip.org> Received: Tuesday, 23 March, 2010, 9:50 PM Hi ? Am currently using Audioscience cards with pjsip , with 8 incoming and 8 outgoing, works like a beauty. ?I wouldn?t recommend those USB sound cards, had terrible nightmares with them. Anyway they still might work so just my own 2 cents. ? Sounds like you are using OSS (it uses /dev/dsp*) , you need to install ALSA and configure it properly, pjsip which uses portaudio requires ALSA if im not mistaken and wont work with OSS . ? You can then assign input/output ports in the pjsip configuration files.? There is a command line utility in the samples directory called sndinfo-i686-pc-linux-gnu? which you can use to identify which channels of your sound card are accessible by pjsip etc. ? If you install the cards with ALSA , you can type aplay ?l (L)? or aplay ?L ?to list the devices/sound cards that are connected. ??They will be something like card0 , card1 , card2 etc.?? Once this is done correctly , you can configure/install pjsip and then use the sndinfo to get the id of each card, configure them in the pjsip.conf and it should work ? Regards ? From: pjsip-bounces at lists.pjsip.org [mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of Jeffrey Ross Sent: Tuesday, March 23, 2010 12:34 PM To: pjsip at lists.pjsip.org Subject: Multiple sound cards and pjsip ? I wish to receive 10 mono voice channels connected directly into a remote machine and have them sent via pjsip to my local machine.? The local machine will send one voice channel back to the remote machine.? At present I'm investigating if I can get 10 USB sound cards to work in Linux and to do so reliably.? For testing I plan to modify pjsua to specify a list of device names to be opened, eg /dev/dsp0, .. /dev/dsp9.? It looks like pjsua tries to open /dev/dsp (although I can't see where it picks up that device name from). Has anyone succeeded in getting multiple sound cards to work with pjsip? Any hints? ? -----Inline Attachment Follows----- _______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip at lists.pjsip.org http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20100323/df8b1790/attachment.html>
