3Com 3031 Command Reference Manual page 167

Fundamental CE1/PRI Interface Configuration Commands 167
Description
Using the clock command, you can set the clock mode on a CE1/PRI interface.
Using the undo clock command, you can restore the default clock mode on the
interface.
By default, the CE1/PRI interface adopts the line clock mode (slave).
When a CE1/PRI interface is working as DCE, chose the internal clock for it, that is,
master clock mode. When it is working as DTE, chose the line clock, that is, slave
clock mode for it.
Example
Set the clock mode of the CE1/PRI interface to internal clock (master) mode.
[3com-E1 3/0/0]clock master
code Syntax
code { ami | hdb3 }
undo code
View
CE1/PRI interface view
Parameter
ami: Adopts Alternate Mark Inversion (AMI) line code format.
hdb3: Adopts High Density Bipolar 3 (HDB3) line code format. This parameter is
only significant for a CE1/PRI interface.
Description
Using the code command, you can set the line code format for a CE1/PRI
interface. Using the undo code command, you can restore the default line code
format of the interface.
The line code format of CE1/PRI interface defaults to hdb3.
You should keep the line code format of the interface in consistency with that
used by the remote device.
Example
Set the line code format of the interface E1 3/0/0 to ami.
[3com-E1 3/0/0]code ami
controller e1
Syntax
controller e1 number