User's Manual Part 2

Firmware Version 1.0.0.1 UCM6200 Series IP PBX User Manual Page 266 of 320
G.721 Compatible Configure to enable/disable G.721 compatible. The default setting is Yes.
G.726
Configure the payload type for G.726 if "G.721 Compatible" is disabled.
The default setting is 111.
iLBC Configure the payload type for iLBC. The default setting is 97.
H.264 Configure the payload type for H.264. The default setting is 99.
H.263P Configure the payload type for H.263+. The default setting is 100 103.
VP8 Configure the payload type for VP8. The default settings is 108.