Hi, I am currently setting the codec priority to prefer SILK using "pjsua_codec_set_priority", it works fine when making an outbound call but for incoming calls, pjsip is using PCMU which is the one the server is sending as the preferred codec. AFAIK, setting the codec priority with "pjsua_codec_set_priority" should work for both incoming and outgoing calls. Is there a way to force using SILK for incoming calls even if the server server preference is PCMU? Thanks, Alex.