3Com 10014299 Set interface rate after binding operation, Set line clock for an E1-F interface

E1-F Interface 141

Perform the following configuration in E1-F interface view.

Table 150 Set interface rate after binding operation

Operation	Command
Bind time slots on an E1-F interface	fe1 timeslot-list { all range }
Restore the default setting for time slot	undo fe1 timeslots
binding on the interface

By default, binding operation will be done on all the time slots on E1-F interface.

Time slot 0 on E1-F interface is used for synchronization information transmission. Therefore, in practice, only time slots 1 through 31 are bound when performing binding operation on all the time slots on an E1-F interface.

Unlike CE1/PRI interface, only one channel set can be bound on an E1-F interface, and this channel set is associated with the current synchronous serial interface. On a CE1/PRI interface, however, multiple channel sets can be bound, and the system will automatically generate a synchronous serial interface accordingly whenever a channel set is formed.

4Set Line Code Format

E1-F interfaces support line code formats AMI (Alternate Mark Inversion) and HDB3 (High Density Bipolar 3).

Perform the following configuration in E1-F interface view.

Table 151 Set line code format for E1-F interfaces

Operation	Command
Set line code format for an E1-F interface	fe1 code { ami hdb3 }
Restore the default line code format for an E1-F interface	undo fe1 code

The line code format for an E1-F interface defaults to hdb3.

5Set Line Clock

If E1-F interface is used as DCE, the slave clock should be selected. If it is used as DTE, the master clock should be selected.

If the E1-F interfaces of two routers are directly connected, they must respectively work in slave and master clock modes. If the E1-F interface of the router is connected to an exchange, however, the exchange is working as DCE and provides clock, so the interface of the router should work in master clock mode.

Perform the following configuration in E1-F interface view.

Table 152 Set line clock for an E1-F interface

Operation	Command
Set line clock for an E1-F interface	fe1 clock { master slave }
Restore the line clock of the E1-F interface to the	undo fe1 clock
default setting

By default, the clock of E1-F interface is slave clock.

6Set Interface Frame Format

When an E1-F interface is working in framed mode, it supports both CRC4 (4-bit Cyclic Redundant Check) and no-CRC4 frame formats.

Perform the following configuration in E1-F interface view.