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2604 CHAPTER 173: VOIP CONFIGURATION COMMANDS
specific: Uses the specific algorithm provided by the voice gateway.
Description Use the
plc-mode command to configure a packet loss compensation mode for
the analog FXS/FXO voice subscriber line.
Use the
undo plc-mode command 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.