3Com MSR 50, MSR 30 manual Em-phy-parm, Em-signal, Related command echo-canceller

2593

Use the undo echo-cancellercommand to restore the default.

By default, the convergence rate of comfort noise amplitude is 0, the maximum amplitude of comfort noise is 256, the comfort noise mixture proportion control factor is 100, and the threshold of two-way talk is 1.

Related command: echo-canceller.

Example # Set the convergence rate of comfort noise amplitude to 50.

<Sysname> system-view [Sysname] voice-setup

[Sysname-voice] echo-canceller parameter convergence-rate 50

em-phy-parm

Syntax	em-phy-parm { 2-wire 4-wire }
	undo em-phy-parm
View	Analog E&M voice subscriber line view
Parameter	2-wire: Chooses the 2-wire analog E&M wire scheme.
	4-wire: Chooses the 4-wire analog E&M wire scheme.
Description	Use the em-phy-parmcommand to configure a wire scheme for the analog E&M
	subscriber line.
	Use the undo em-phy-parmcommand to restore the default.
	By default, the 4-wire analog E&M cable is selected.
	This command is only applicable only to the analog E&M subscriber line. The
	configuration will apply to all E&M interfaces of the card after you configure this
	command.
Example	# Choose the 4-wire scheme for the analog E&M subscriber line.
	<Sysname> system-view
	[Sysname] voice-setup
	[Sysname-voice] subscriber-line 1/0
	[Sysname-voice-line1/0] em-phy-parm 4-wire

em-signal

Syntax em-signal { delay immediate wink } undo em-signal