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How to enable Echo Cancellation on U1981.

Publication Date:  2017-12-23 Views:  244 Downloads:  0

Issue Description

This KB shows you how to enable Echo Cancellation in U1981.


Log in to the PBX using the LMT tool and run the show system voip argu algo <g711&g729&g723&ilbc_1520&ilbc_1333> to check whether the EC function is enabled.


System VoIP Arguments

PacketTime  : 20
                     EchoCancel  : [ON]
                    GainControl  : 14
             SilenceSuppression  : [OFF]
  JitterThreshold(min/max/init)  : 20(ms)/200(ms)/20(ms)
                      CRCswitch  : [NULL]

====  Command executed success !  ====
  • If the status is OFF, run the config system voip algo <g711&g729&g723&ilbc_1520&ilbc_1333> echocancel on to open the EC function.
  • If the status is ON, go to the next step.