Ft1 Clock; Ft1 Code - H3C MSR 20-20 Command Reference Manual

244 C 15: T1-F I
HAPTER
Example

ft1 clock

Syntax
View
Parameter
Description
Example

ft1 code

Syntax
View
C C
NTERFACE ONFIGURATION OMMANDS
You may use this command to adapt signal waveform to different transmission
conditions such as the quality of the signal received by the receiver. If the signal
quality is good, you can just use the default setting.
# Set the cable length to 40.5 meters (133 feet) on T1-F interface Serial 2/0.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0]ft1 cable short 133ft
ft1 clock { master | slave }
undo ft1 clock
T1-F interface view
master: Adopts the internal clock as the clock source.
slave: Adopts the line clock as the clock source.
Use the ft1 clock
Use the
undo ft1 clock
When the T1-F interface is working as DCE, choose the internal clock for it. When
it is working as DTE, choose the line clock for it.
When the T1-F interfaces on two routers are directly connected, one interface
must work in master clock mode to provide the clock source while the other in
slave clock mode to accept.
When the T1-F interface on your router is connected to an exchange, it is working
as DTE and therefore must be configured with the slave clock mode to accept the
line clock provided by the exchange working as DCE.
# Use the internal clock as the clock source on T1-F interface Serial 2/0.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] ft1 clock master
ft1 code { ami | b8zs }
undo ft1 code
T1-F interface view
command to configure the clock source for the T1-F interface.
command to restore the default, that is, line clock.