NEC SOPHO IP 5000 Command Reference Manual page 161

frame-format
loopback
Command Reference Guide
Parameter
16: Adopt 16-bit CRC.
32: Adopt 32-bit CRC. no-crc: Adopt no CRC.
Description
Using the crc command, you can configure CRC mode of the serial interface
formed by CT3. Using the undo crc command, you can restore the default
setting.
By default, 16-bit CRC is used.
For the related commands, see t1 channel-set, t1 unframed, and using.
Example
Apply 32-bit CRC to the serial interface formed by the interface T3 1/0/0 in
unchannelized mode.
[NEC-PHILIPS-Serial1/0/0:0] crc 32
Syntax
frame-format { c-bit | m23 }
undo frame-format
View
CT3 interface view
Parameter
c-bit: Sets the frame format to C-bit.
m23: Sets the frame format to m23.
Description
Using the frame-format command, you can configure the frame format used by
a CT3 interface. Using the undo frame-format command, you can restore the
default frame format used by the CT3 interface.
By default, the CT3 interface adopts the C-bit frame format.
Example
Set the frame format of the interface T3 1/0/0 to m23.
[NEC-PHILIPS-T3 1/0/0] frame-format m23
Syntax
loopback { local | payload | remote }
undo loopback
View
CT3 interface view
Parameter
local: Enables the CT3 interface to perform local loopback.
payload: Places the CT3 interface in an external payload loop. Data passes the
framer in this case and will be looped back after payload is generated.
SOPHO
IP 5000/SOPHO IP6000
161