H3C Technologies H3C SR8800 - Manual (Page 45)

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Step Command Remarks
4. Configure a serial port
corresponding to the framed
E3 channel.
e3 e3-number framed
Optional.
By default, no serial port is
configured.
5. Configure the clock mode of
the E3 channel. e3 e3-number set clock { master |
slave } Optional.
Slave by default.
6. Enable loopback in the
specified mode on the E3
channel.
e3 e3-number set loopback { local
| payload | remote } Optional.
Disabled by default.
7. Set the national bit of the E3
channel. e3 e3-number set national-bit { 0 |
1 }
Optional.
1 by default.
This command is unavailable when
an E3 channel works in unframed
mode.
8. Shut down the E3 channel. e3 e3-number shutdown
Optional.
Up by default.
NOTE:
The router does not support adding a serial interface corresponding to the E3 channel to the specified
MP-group.
Configuring a T3 channel
To configure a T3 channel:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter CPOS interface view. controller cpos cpos-number N/A
3. Create a serial interface
corresponding to the
unframed T3 channel.
using t3 t3-number
Optional.
By default, no serial interface is
created.
4. Configure a serial port
corresponding to the framed
T3 channel.
t3 t3-number framed
Optional.
By default, no serial port is
configured.
5. Configure the clock mode of
the T3 channel. t3 t3-number set clock { master |
slave } Optional.
Slave by default
6. Set the framing format of the
T3 interface. t3 t3-number set frame-format
{ c-bit | m23 }
Optional.
C-bit framing by default
A T3 channel working in unframed
mode does not support framing
format setting.
7. Enable loopback in the
specified mode on the T3
channel.
t3 t3-number set loopback { local |
payload | remote } Optional.
Disabled by default.