Updated: I have partial success using DPH-50U with skype on linux (Ubuntu 8.04) By partial, I mean I can get 8-bit audio playing and recording through an RJ11 phone. (i.e. no dtmf) ... details follow ... It turns out the DPH-50U contains the same chipset as the AU600. By following the information here: http://alsa.opensrc.org/index.php/Au600 I managed to recompile the source code from here: > hg clone http://85.10.198.106/hg/~mrec/au600 (Tip: On my system it wouldn't recompile with the generic kernel in ubuntu as ALSA is a module. I first had to compile a custom kernel and include ALSA directly into the kernel.) There were some problems with the audio which seemed to be endian-related. By decimating to 8bit audio, I can now get choppy quality. Enough to at least call the skype sound test service, and hear the echo back. My spare time at the moment is extremely limited. However, if there's someone out there who wants to carry the torch on this one (hosting, co-ordinating, etc), I'd be keen to help out on extending the AU600 driver to fully support the DPH-50U. Cheers, --Chris ============ Original Message ====================== For anyone reading this in the archives trying to get your DPH-50U to work with skype on linux, the slmodemd and slusb.ko route seems to be a dead-end.. There seems to be no way to access the audio from //dev/ttySL0 . I spent some time investigating the alsa USB driver: snd-usb-audio.ko. This too is a dead end. The ALSA driver attempts to access the "Audio (non-midi)" USB protocol, which corresponds to bDeviceClass 0x01. http://www.linux-usb.org (use lsusb -v to find your bDeviceClass) I'm currently investigating the kernel usb driver, cdc-acm.ko which corresponds to bDeviceClass 0x02. (More details in kernel/Documentation/usb/acm.txt ) Will report back when I know more. (Of course, any help is greatly appreciated.) Cheers, --Chris p.s. I also located this: http://www.pcausa.com/Utilities/UsbSnoop/default..htm Don't know of how much use it will be. ========= Original Message =========== Sat, 13 Sep 2008 00:43:56 +0000 Hi Marv, > ... /dev/ttySL0 virtual ports are not Sound competent yet ... Yes, this is my understanding too. Hence, can someone help me get ALSA working with my DPH-50U ? root@here# slmodemd --alsa error: mixer setup: attach hw:1 error: No such file or directory ALSA lib ../../src/conf.c:3952:(snd config expand) Unknown parameters 1 ALSA lib ../../../src/pcm/pcm.c:2145:(snd pcm open noupdate) Unknown PCM modem:1 error: alsa setup: cannot open playback device 'modem:1': Invalid argument error: cannot setup device `modem:1' As mentioned previously, I'm comfortable debugging and/or coding - I just don't know in which direction to proceed, or which sources I should be modifying. Thanks, --Chris -- Be Yourself @ mail.com! Choose From 200+ Email Addresses Get a Free Account at www.mail.com
