3Com 10014299 manual Set line code format for T1-F interface

144CHAPTER 10: CONFIGURING WAN INTERFACE

module in slot 2. Hence, the E1-F interface will be numbered Serial 0, and the 4SA interfaces will be numbered Serial 1 through Serial 4, and the T1-F interfaces will be numbered Serial 5 and Serial 6.

2Set Interface Rate after Binding Operation

When T1-F interface works in framed mode, time slot binding on the interfaces can be made according to user's demands.

Perform the following configuration in T1-F interface view.

Table 157 Set interface rate after binding operation

Operation	Command
Bind time slots on a T1-F interface	ft1 timeslot-list { all
	range } [ speed { 56 64 } ]
Restore the default setting for time slot binding on	undo ft1 timeslots
the interface

By default, binding operation will be done on all the time slots on T1-F interface.

Unlike CT1/PRI interface, only one channel set can be bound on a T1/F interface, and this channel set is associated with the current synchronous serial interface. On a CT1/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.

3Set Length/Attenuation for Transmission Line

If a T1-F interface is connected to the transmission lines of various lengths, you should match attenuation and waveform of the interface signals with the transmission lines.

Perform the following configuration in T1-F interface view.

Table 158 Set length/attenuation of transmission line on a T1-F interface

Operation	Command
Set the T1-F interface to use long-distance transmission	ft1 cable long decibel
line
Set the T1-F interface to use short-distance transmission	ft1 cable short length
line
Restore the default setting of the transmission line for	undo ft1 cable
the T1-F interface

By default, attenuation matched a T1-F interface is long 0db.

4 Set Line Code Format

T1-F interface supports line code formats AMI (Alternate Mark Inversion) and B8ZS (Bipolar 8-Zero Substitution).

Perform the following configuration in T1-F interface view.

Table 159 Set line code format for T1-F interface

Operation	Command
Set line code format for a T1-F interface	ft1 code { ami b8zs }
Restore the default line code format for a T1-F interface	undo ft1	code

The line code format for an T1-F interface defaults to b8zs.

5 Set Line Clock