Hello, We have a phone app that ties back to our freeswitch servers. Recently the android phones are getting one-way audio. It works on iPhones and desktop clients. Based on the pcap's and fs_cli I see that the audio ports changed after the sdp negotiations. Not sure why this is happening also see that the codec is set to "BUG Codec PCMU:0" Any Suggestions? 2020-04-14 15:56:07.661344 [DEBUG] switch_ivr_async.c:1500 No silence detection configured; assuming start of speech 2020-04-14 15:56:07.701439 [DEBUG] switch_core_io.c:448 Setting BUG Codec PCMU:0 2020-04-14 15:56:07.701439 [DEBUG] switch_rtp.c:1887 rtcp_stats_init: audio ssrc[1321291818] base_seq[30216] 2020-04-14 15:56:07.881347 [INFO] switch_rtp.c:7231 Auto Changing audio port from 124.123.104.212:10488 to 124.123.104.212:9658 Thanks,