MGI Parameter

Sets the DSP parameters of the MGI board.

The parameters of the MGI 3 board and MGI 16/MG I64 board differ respectively. You can set them individually.

 

MGI 3 Parameter

Parameter

Description

Echo Cancel

The Echo Cancellation is the function to remove echo generated by reflection of voice on the Packet Delay and PSTN. This option sets whether to use this function.

Silence Suppression

The Silence Suppression is the function that detects silence during talking and does not transmit those voice packets. This option sets whether to use this function.

Input Filter

Sets whether to perform the DSP Input Filtering.

Input Gain

Inputs the call receptivity of the PCM voice that enters the DSP.

(-31~31 Db)

Voice Volume

Sets the volume used when converting voice packets to a PCM voice.

(-31~31 Db)

Frame Count

Selects the audio codec of the MGI card and sets the transmission interval time for VoIP packets.

Jitter Option Factor

Sets the reference to control the Jitter buffering operation when converting voice packets received from the network to a PCM voice.

If this option is set to a value less than 4, emphasis is put on the packet loss processing. If set to a value larger than 4, emphasis is put on the packet delay.

Min Jitter Delay (msec)

Selects the jitter delay value.

Max Jitter Delay (msec)

Selects the maximum jitter delay value.

Loss Check Time (sec)

Sets the loss check interval for RTP packets.

FAX ECM

When using the T.38 fax, this option sets the additional recovery function for fax transmission errors.

FAX Count

Sets the maximum allowable number of the Internet FAX channels.

DTMF Type

Sets whether to send DTMF signals along a voice channel (INBAND) or using a separate message (OUTBAND).

TOS/DifServ

Consists of eight (8) bits. This option sets the priority to be used in a router or switch on the external networks. If the network does not support this, this option must be set to the default value.

T38 Retry Count

Sets the retry count in the T38 Redundancy Field.

T38 G711

Sets whether to apply the T38 if the exit codec of the MGI is G.711.

 
MGI 16/MGI 64 Parameter

Parameter

Description

Echo Cancel

The Echo Cancellation is the function to remove echo generated by reflection of voice on the Packet Delay and PSTN. This option sets whether to use this function.

Silence Suppression

The Silence Suppression is the function that detects silence during talking and does not transmit those voice packets. This option sets whether to use this function.

Input Filter

Sets whether to perform the DSP Input Filtering.

Input Gain

Inputs the call receptivity of the PCM voice that enters the DSP.

(-31~31 Db)

Voice Volume

Sets the volume used when converting voice packets to a PCM voice.

(-31~31 Db)

Frame Count

Selects the audio codec of the MGI card and sets the transmission interval time for VoIP packets.

Jitter Option Factor

Sets the reference to control the Jitter buffering operation when converting voice packets received from the network to a PCM voice.

If this option is set to a value less than 4, emphasis is put on the packet loss processing. If set to a value larger than 4, emphasis is put on the packet delay.

Min Jitter Delay (msec)

Selects the jitter delay value.

Max Jitter Delay (msec)

Selects the maximum jitter delay value.

Loss Check Time (sec)

Sets the loss check interval for RTP packets.

FAX ECM

When using the T.38 fax, this option sets the additional recovery function for fax transmission errors.

FAX Count

Sets the maximum allowable number of the Internet FAX channels.

DTMF Type

Sets whether to send DTMF signals along a voice channel (INBAND) or using a separate message (OUTBAND).

TOS/DifServ

Consists of eight (8) bits. This option sets the priority to be used in a router or switch on the external networks. If the network does not support this, this option must be set to the default value.

T38 Retry Count

Sets the retry count in the T38 Redundancy Field.

T38 G711

Sets whether to apply the T38 if the exit codec of the MGI is G.711.

802.1 Priority

Sets the priority field for Ethernet frames composed by the 802.1 standard. The priorities of packets are divided into the packets that must be processed urgently and the packets that have a time, and those packets are processed. (0 to 7)

802.1 VLAN ID

Sets the 802.1Q VLAN.

The Virtual Local Area Network (VLAN) is the function to group similar devices into workgroups and perform the switching processing according to the LAN operation policy regardless of the location of user¡¯s device. (0 to 4095)

 

Parameter

Description

802.1Q Service

Sets whether to use the 802.1Q.

EC Gain

Sets the EC GAIN value. (18~38)

NLP

Sets the NLP value. (0/1/2)

Echo Tail Length (msec)

Sets the echo tail length. (8 to 128)

Jitter Delay Time

Sets the jitter delay time. (0 to 500)

Jitter Period

Sets the jitter period. (1 to 10)

Dual Filter EC Option

Sets the dual filter option.

SRTP Enable

Sets whether to use SRTP protocol on the whole system.

 
Viewing and Changing the MGI Parameter Values

1)  Select 5.Features => 5.2 VoIP Options => 5.2.9 MGI Parameter from the Tree Viewer.

2)  View the current MGI parameter values.

3)  Change the MGI parameter values.

4)  Save the changes.