3com MSR 20-20 참조 매뉴얼

C

HAPTER

 173: V

O

IP C

ONFIGURATION

 C

OMMANDS

impedance { country-name | R550 | R600 | R650 | R700 | R750 | R800 | R850 | R900 | 
R950 }

Analog FXO voice subscriber line view

country-name: Specifies a country so that its impedance standard is used. It can be 
Australia, Austria, Belgium-Long, Belgium-Short, Brazil, China, Czech-Republic, 
Denmark, ETSI-Harmanized, Finland, France, German-Swiss, Greece, Hungary, 
India, Italy, Japan, Korea, Mexico, Netherlands, Norway, Portugal, Slovakia, Spain, 
Sweden, U.K.: US-Loaded-Line, US-Non-Loaded, or US-Special-Service.

R550: 550-ohm real impedance.

R600: 600-ohm real impedance.

R650: 650-ohm real impedance.

R700: 700-ohm real impedance.

R750: 750-ohm real impedance.

R800: 800-ohm real impedance.

R850: 850-ohm real impedance.

R900: 900-ohm real impedance.

R950: 950-ohm real impedance.

Use the impedance command to configure the current electrical impedance on 
an FXO voice subscriber line.

Use the undo impedance command to restore the default.

By default, the electrical impedance on the FXO voice subscriber line applies to 
China.

You can specify an impedance value by specifying the country where the value 
applies. You may just input the leading letters that uniquely identify a country 
without inputting a complete country name, however.

# Configure the current electric impedance to r600 on voice subscriber line 1/0.

<Sysname> system-view

[Sysname] voice-setup

[Sysname-voice] subscriber-line 1/0

[Sysname-voice-line1/0] impedance r600