Samsung iDCS 500 Programming Manual page 403

iDCS 500
TECHNICAL MANUAL
MMC: 835
DESCRIPTION:
This MMC provides various VoIP DSP options. The options set in this MMC are ITM3
system wide.
NOTE: Programming MUST be exited before changes to the ITM3 take effect.
• AUDIO CODEC: Selects which audio codec compression to use. Selections are
1. G.711 (64K), 2. G.723.1 (5.3K~6.4K), 3. G.729A (8K) 4. 729 (8K)
• ECHO CANCELLATION: Enables or disables echo cancellation (0: disable, 1:
enable). This function removes echo that is generated by voice reflection and
packet delay.
• SILENCE
SUPRESSION:
suppression is used (0: disable, 1: enable). This prevents transmission during
the silence period of a call.
• INPUT FILTER: This option select input filtering of the DSP (0: disable, 1:
enable). This should be set as ON.
• OUTPUT FILTER: This option select output filtering of the DSP (0: disable, 1:
enable). This should be set as ON.
• INPUT GAIN: PCM input gain value of DSP. The range is –31dB~31dB (0~63).
This set the quality of PCM voice from the VoIP DSP to the PCM system
•
VOICE VOLUME: This selects the voice volume. The range is –31dB~31dB
(0~63). This set the voice volume from the PCM system to the VoIP DSP
• MULTI FRAME COUNTER: This option selects the number of frames the ITM3
will consolidate the packet header message. The voice packets are buffered to
the set number and sent as a single packet. The range is 1~12.
• JITTER OPTION: This selects the dynamic jitter specific value. Value determines
whether the focus is on packet loss or packet delay. The range is 00~12. The
lower number is used in the case of packet losses and the higher end is used
when there is more packet delay.
• RTP DELAY LIMIT: This is the value of the delay limit. The status will change
when this limit is exceeded. The value is measured in milliseconds (ms). This is
used to determine network error.
VoIP DSP OPTION
This parameter determines
PROGRAMMING
PART 2 SEPTEMBER 2003
whether silence
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