Configuring cable type

The configuration of the cable between a voice router and its peer device affects only voice transmission and has no impact on signaling. Improper configuration can reduce the two-way communication to a one-way voice communication.

To configure the cable type for the analog E&M trunk:

Step

Command

Remarks…

1. Enter system view.

system-view

N/A

2. Enter voice subscriber line view.

subscriber-line line-number

N/A

3. Configure the cable type for the E&M voice subscriber line.

em-phy-parm { 2-wire | 4-wire }

The default is 4-wire.