Configuring the cable type

You must configure the same cable type for the E&M interfaces on the originating and terminating devices. Otherwise, only one-way voice communication can be implemented.

To configure the cable type for an E&M interface:

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter E&M interface view.

subscriber-line line-number

N/A

3. Configure the cable type for the E&M interface.

cable { 2-wire | 4-wire }

The default is 4-wire.