R0106-HP MSR Router Series Interface Command Reference(V7)

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• In an external payload loopback, data received by the receiver is looped back at the E1 framer as
payload.
• In an external loopback, data received by the receiver is looped back directly without passing
through the E1 framer.
Examples
# Enable external payload loopback on E1 channel 1.
<Sysname> system-view
[Sysname] controller cpos 2/4/0
[Sysname-Cpos2/4/0] e1 1 set loopback payload
Related commands
display controller cpos e1
e1 shutdown
Use e1 shutdown to shut down an E1 channel.
Use undo e1 shutdown to bring up an E1 channel.
Syntax
e1 e1-number shutdown
undo e1 e1-number shutdown
Default
E1 channels are up.
Views
CPOS interface view
Predefined user roles
network-admin
Parameters
e1-number: Specifies an E1 channel by its number on the CPOS interface. The value range for this
argument is 1 to 63.
Usage guidelines
When you shut down an E1 channel, its associated serial interfaces are also shut down.
Examples
# Shut down E1 channel 1.
<Sysname> system-view
[Sysname] controller cpos 2/4/0
[Sysname-Cpos2/4/0] e1 1 shutdown
e1 unframed
Use e1 unframed to configure an E1 channel on a CPOS interface to operate in unframed mode.
Use undo e1 unframed to restore the default.