Hello, I made a little GUI app using PJSIP 1.8. I am using the PJSUA API. I am connection to a SIP doorphone unit, which works fine. It set's up the audio conversation as expected. However, on my laptop, I receive the sound from the doorphone just fine (although the volume is a little low), but from my laptop to the doorphone, the sound get's distorted. Like, robotalk ;) What steps should I take to find out what is going on and to improve the audio quality? Thanks!