3Com MSR 30, MSR 50 manual Receive gain, Syntax receive gain value Undo receive gain

2604 CHAPTER 173: VOIP CONFIGURATION COMMANDS

specific: Uses the specific algorithm provided by the voice gateway.

Description Use the plc-modecommand to configure a packet loss compensation mode for the analog FXS/FXO voice subscriber line.

Use the undo plc-modecommand to restore the default.

By default, the gateway-specific algorithm is used for packet loss compensation.

Example # Configure the voice gateway to use the universal packet loss compensation algorithm.

<Sysname> system-view

[Sysname] voice-setup

[Sysname-voice] subscriber-line 1/0

[Sysname-voice-line1/0] plc-mode general

receive gain

Syntax receive gain value

undo receive gain

View FXS/FXO/E&M voice subscriber line view

Parameter value: Voice input gain in dB, in the range of -14.0 to +13.9 with one digit after the decimal point.

Description Use the receive gain command to configure the gain value at the voice subscriber line input end.

Use the undo receive gain command to restore the default.

By default, the input gain on the voice interface is 0 dB.

This command is applicable to FXO, FXS, analog E&M subscriber lines and digital

E1 voice subscriber line.

When the voice signal on the line attenuates to a relatively great extent, this command can be used to appropriately enhance the voice input gain.

Related command: transmit gain and subscriber-line.

Example # Configure the voice input gain as 3.5dB on subscriber line 1/0.

<Sysname> system-view [Sysname] voice-setup [Sysname-voice] subscriber-line 1/0 [Sysname-voice-line1/0] receive gain 3.5

c CAUTION: Gain adjustment may lead to a call failure. You are not recommended to adjust the gain. If necessary, do it with the guidance of technical personnel.