Hi Saul, I believe I have resolved this error now - please see my other post in reply to Eeri. Regards, Chris > -----Original Message----- > From: Sa?l Ibarra Corretg? [mailto:saul@xxxxxxxxxxxxxxx] > Sent: 08 January 2014 09:23 > To: pjsip list > Subject: Re: Can't find audio device on Raspberry Pi > > HI, > > On Jan 7, 2014, at 4:44 PM, Swinney C. <C.Swinney at swansea.ac.uk> wrote: > > > Hi Saul, > > > > Thanks for this, I was going to ask you if you had set up the 3.5mm > analogue output WITHOUT the USB device installed. I think PJSIP still moans > about the analogue output and the fact that there is no audio input. I was > wondering if there was a way to set up a 'dummy' input device in order to > fool PJSIP. As mentioned, for this particular application, we simply don't > require 2 way communications. > > > > I see. I used 2 sound cards at the same time, the builtin one just for ringing > alerts, and a USB sound card for normal communication. The default sound > card has the volume turned all the way down for some reason, so I had to > turn it up with alsamixer, FYI. > > > I'm not entirely sure what you mean by "Chaining audio devices", however > I do see the options: > > > > Oh, I meant changing. > > > --capture-dev=id Audio capture device ID (default=-1) > > --playback-dev=id Audio playback device ID (default=-1) > > > > Is this what you mean? There is also an option: > > > > Yes, that one. > > > --null-audio > > > > However, I am assuming that this will set BOTH input and output to NULL, > rather than just one device. > > > > You guessed right, with the NULL backend you won't get any sound out of > PJSIP. > > > Cheers, > > -- > Sa?l Ibarra Corretg? > AG Projects > > > >
