3Com 3031 Command Reference Manual page 161

Table 3 Clock options available for a synchronous serial interface working as DTE
Clock selection option
DTEclk1
DTEclk2
DTEclk3
DTEclk4
In the table, the clock ahead of "=" is the DTE clock and the one after is the DCE
clock.
Example
Set the synchronous serial interface working as DTE to use the clock selection
option DTEclk2.
[3com-Serial0/0/0]clock dteclk2
code nrzi Syntax
code nrzi
undo code
View
Synchronous serial interface view
Parameter
None
Description
Using the code nrzi command, you can set the digital signal coding format to
None-Return-to-Zero-Inverse (NRZI) for a synchronous serial interface. Using the
undo code command, you can restore the digital coding format of the
synchronous serial interface to NRZ.
The digital signal coding format defaults to NRZ on the synchronous serial
interface.
Example
Set the digital signal coding format to NRZI on the synchronous serial interface.
[3com-Serial0/0/0]code nrzi
detect
Syntax
1 Asynchronous serial interface
detect dsr-dtr
undo detect dsr-dtr
2 Synchronous serial interface
Fundamental WAN Interface Configuration Commands
Description
TxClk = TxClk, RxClk = RxClk
TxClk = TxClk, RxClk = TxClk
TxClk = RxClk, RxClk = TxClk
TxClk = RxClk, RxClk = RxClk
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