Dear all, Sorry for sending this again since I really need some hint!
I noticed in many android phones (we tested it with at least 50+ types of android) a terrible howling echo when both linphone-android UA is in speaker mode or in video chat (speaker mode of course). This only happen when both of them are in speaker mode. Any idea how to tube this issue? I saw some ec related parameter in linphonerc file but no idea what they means. ec_tail_len=120 ec_framesize=128 el_type=mic el_thres=0.03 el_force=100000 el_sustain=400 el_transmit_thres=1.7 ng_floorgain=0.01 Thank you! Coca
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