Installation guide

OfficeServ 12 Programming Guide/Ed.00 CHAPTER 2. MMC Programming

835 MGI DSP Options

This MMC provides various MGI DSP options. The options set in this MMC are

MGI-type specific.

MGI parameters are followed :

No Parameter Description

00 AUDIO CODEC Selects which audio CODEC compression will be used. G.729A(8K),

G.729(8K), G.711(64K), G.723.1(5.3K-6.4K). Default is G.729A

01 ECHO CANCEL Enables or disables echo cancellation. This function removes echo that

is generated by voice reflection and packet delay. Default is ENABLE.

02 SILENCE SUP This parameter determines whether silence suppression is used This

prevents transmission during the silence period of a call, and conserves

bandwidth when enabled. Default is ENABLE.

03 IN FILTER This option select input filtering of the DSP. This should always be set as

ENABLE.

04 OUT FILTER This option select output filtering of the DSP. This should always be set

as ENABLE.

05 INPUT GAIN PCM input gain value of DSP. The range is-31Db-32dB(0-63).

This set the quality of PCM voice from the VoIP DSP to the site. Default

is 32(0 dB).

06 VOICE VOL This value selects the voice volume. The range is-31dB-31dB(0-63).

Default is 32(0 dB).

07 FRAME COUNT This value determines the transmission interval time of VoIP packets

generated by the MGI card. The range is 020-240ms Default is 40ms.

08 JITTER OPT This is a scale value that introduces a intentional buffer(delay) of the

transmission of VoIP packets generated by the MGI card. This value

determines whether the focus is on packet loss or packet delay.

The range is 00-12. Default is 4.

09 MIN JITTER Decides the minimum time to consider delay for jitter adjustment.

The range is 010-300ms Default is 30ms.

10 MAX JITTER Decides the maximum time to consider delay for jitter adjustment.

The range is 010-300ms. Default is 150ms.

11 FAX ECM This option selects retry of Fax-over-IP, in the case that errors are

detected. Default is ENABLE.