R2511-HP MSR Router Series Interface Command Reference(V5)

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Use undo frame-format to restore the default.
Syntax
frame-format { crc4 | no-crc4 }
undo frame-format
Default
The framing format on a CE1 interface is no-CRC4.
Views
CE1/PRI interface view
Default command level
2: System level
Parameters
crc4: Sets framing format to CRC4.
no-crc4: Sets framing format to no-CRC4.
Usage guidelines
A CE1/PRI interface in CE1 mode supports both CRC4 and no-CRC4 framing formats, where CRC4
supports four-bit CRC on physical frames but no-CRC4 does not.
Examples
# Set the framing format on interface E1 2/0 to CRC4.
<Sysname> system-view
[Sysname] controller e1 2/0
[Sysname-E1 2/0] frame-format crc4
idlecode (CE1/PRI interface)
Use idlecode to set the line idle code on the CE1/PRI interface. Two types of line idle code are available:
0x7E and 0xFF.
Use undo idlecode to restore the default.
Syntax
idlecode { 7e | ff }
undo idlecode
Default
The line idle code is 0x7E.
Views
CE1/PRI interface view
Default command level
2: System level
Parameters
7e: Sets line idle code to 0x7E.
ff: Sets line idle code to 0xFF.