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
