R3303-HP HSR6800 Routers Interface Command Reference

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Default
The CRC mode for a synchronous serial interface formed on a CT1 interface is 16-bit CRC.
Views
Synchronous serial interface view
Default command level
2: System level
Parameters
16: Adopts 16-bit CRC.
32: Adopts 32-bit CRC.
none: Disables CRC.
Examples
# Apply 32-bit CRC to a serial interface formed on interface CT1 interface 2/0/0.
<Sysname> system-view
[Sysname] controller t1 2/0/0
[Sysname-T1 2/0/0] channel-set 1 timeslot-list 2-6
[Sysname-T1 2/0/0] quit
[Sysname] interface serial 2/0/0:1
[Sysname-Serial2/0/0:1] crc 32
data-coding (CT1 interface)
Use data-coding inverted to enable user data inversion on the CT1 interface.
Use data-coding normal to disable user data inversion on the CT1 interface.
Use undo data-coding to restore the default.
Syntax
data-coding { inverted | normal }
undo data-coding
Default
Data inversion is disabled.
Views
CT1 interface view
Default command level
2: System level
Parameters
inverted: Enables user data inversion.
normal: Disables user data inversion.
Usage guidelines
To prevent 7e in valid data from being taken for stuffing characters, HDLC inserts a zero after every five
ones in the data stream. Then, HDLC inverts every one bit into a zero and every zero bit into a one. This