= Checking if Speaker is Functioning Properly by Playing a WAV File = An easy way to check if speaker is functioning properly is by using '''pjsua''' to play a WAV file to the speaker, with these easy steps: 1. Find any WAV file with the following specification: * any clock rate * '''mono''' (not stereo) * 16bit, PCM sample 1. Run pjsua with the file: {{{ $ ./pjsua --play-file THEFILE.WAV }}} 1. Check that the file is registered to the bridge: {{{ >>> cl Conference ports: Port #00[16KHz/10ms] Primary Sound Capture Driver transmitting to: Port #01[16KHz/10ms] THEFILE.WAV transmitting to: }}} 1. Play the file to the speaker: {{{ >>> cc 1 0 Success }}} 1. Done. You should hear the file played to the speaker. If you couldn't hear the file played to the speaker, then there's probably something wrong with your speaker.