CHAPTER 2. MMC ProgrammingSamsung Business Communications 2-351237B[835] MGI DSP OPTIONSThis MMC provides various MGI DSP (Audio Code Chip) options.No Parameter Description Default00 AUDIO CODEC Selects the Audio Codec of an MGI card and specify thetransmission interval time of the VoIP packet.G.729A –20MS01 ECHO CANCEL Enables or disables echo cancellation. This functionremoves the echo that is generated by voice reflectionand packet delay.ENABLE02 SILENCE SUP This parameter determines whether silence suppressionis used. This prevents transmission during the silenceperiod of a call, and conserves bandwidth whenenabled.DISABLE03 IN FILTER This option selects input filtering of the DSP. This shouldalways be set to ENABLE.ENABLE04 OUT FILTER This option selects output filtering of the DSP. Thisshould always be set to ENABLE.ENABLE05 TO RTP GAIN PCM input gain value of DSP. The range is0~63(-31 dB~31 dB).This set the quality of PCM voice from the VoIP DSP tothe site. Default is 32(0 dB).32(0 dB)06 TO PCM GAIN This value selects the voice volume. The range is0~63(-31 dB~31 dB).32(0 dB).07 JITTER OPT This is a scale value that introduces a intentionalbuffer(delay) of the transmission of VoIP packetsgenerated by the MGI card. This value determineswhether the focus is on packet loss or packet delay.The range is 00~12.408 MIN JITTER Decides the minimum time to consider delay for jitteradjustment.The range is 010~300 ms30 ms09 MAX JITTER Decides the maximum time to consider delay for jitteradjustment.The range is 010-300 ms.150 ms10 RTP LOSS TM This option selects the interval time for sending RTCP. 5 sec11 T38 FAX USE This option selects the mode of FoIP. If selct Enable, faxprotocol is T.38. In other case, fax protocal is G.711pass through. (This mode should be use G.711 codec)ENABLE12 T38 REDUND. This option selects retry count of Fax-over-IP if errorsare detected. The range is 0~4(0 means no retry).213 FAX ECM This option selects retry of Fax-over-IP if errors aredetected.ENABLE14 MAX FAX CNT This is the maximum number of channels that can be 2
