The codec RPG 500 itself disconnected from the conference

Hello

Tell me please

What does the error message mean:

2017-09-29 11:39:44 ERROR CEng: hd [0]: COMM [0]: argLen too large (2540) for callback structure (2200), funcIndex: 12 [12194096mshs  ???

and

2017-09-29 11:39:44 ERROR CEng: hd [0]: Session [2]: argLen too large (2540) for callback structure (2200), funcIndex: 1 [12194096mshs ???

It is necessary to understand the reason for disabling the codec from the conference.

system.info.humanreadablemodel="RealPresence Group 500"
system.info.humanreadableversion="Release - 4.1.5-180072"