3Com 10014299 manual Enter the view of the specified E3 interface

		CE3 Interface 147
Table 164 Enter the view of the specified E3 interface
	Operation	Command
	Enter the view of CE3 interface	controller e3 number

2Set Clock Mode of CE3 Interface

Perform the following configuration in CE3 interface view.

Table 165 Set clock mode of the CE3 interface

Operation	Command
Set clock mode of the CE3 interface	clock { master slave }
Restore the default clock mode of CE3 interface	undo clock

By default, CE3 interface uses slave clock.

The user can also set clock mode for E1 channels of CE3 interface.

Table 166 Set clock mode of the E1 channel

Operation	Command
Set clock mode of the E1 channel	e1 line-numberset clock {
	master slave }
Restore the default clock mode of E1 channel	undo e1 line-number set
	clock

By default, E1 channel uses slave clock.

3Set National Bit for CE3 Interface

Perform the following configuration in CE3 interface view.

Table 167 Set a national bit of the CE3 interface

Operation	Command
Set national bit of the CE3 interface	national-bit { 0 1 }
Restore the default national bit	undo national-bit

By default, national bit of CE3 interface is 1.

4Set the Loopback Mode of CE3 Interface

Perform the following configuration in CE3 interface view.

Table 168 Set loopback mode of CE3 interface

Operation	Command
Set loopback mode of CE3 interface	loopback { local payload
	remote }
Disable loopback on the CE3 interface	undo loopback

By default, loopback is disabled.

Single-channel loopback can be set on the E1 channels on a CE3 interface, and the settings of individual channels are independent.

Table 169 Set loopback mode of E1 channel

Operation	Command
Set loopback mode of E1 channel	e1 line-numberset loopback
	{ local remote }
Disable loopback on the E1 channel	undo e1 line-number set
	loopback

5Set E1 Frame Format