Insert-Single-Bit-Error; Invert-Data - Alcatel-Lucent 7750 SR OS Interface Configuration Manual

Configuration Commands
Default all-ones
Parameters
all-ones — Defines the 8 bit value to be transmitted as 11111111.
pattern — Transmits a user-defined pattern.

insert-single-bit-error

Syntax insert-single-bit-error
Context config>port>tdm>ds1
config>port>tdm>e1
Description
This command inserts a single bit error for the BERT test.
Default no bit-error-insertion

invert-data

Syntax [no] invert-data
Context config>port>tdm>ds1
config>port>tdm>e1
Description
This command causes all data bits to be inverted, to guarantee ones density. Typically used with AMI
line encoding.
Default no invert-data
loopback
Syntax loopback {line | internal | fdl-ansi | fdl-bellcore | payload-ansi | inband-ansi | inband-
bellcore}
no loopback
Context config>port>tdm>ds1
config>port>tdm>e1
Description This command puts the specified port or channel into a loopback mode.
The corresponding port or channel must be in a shutdown state in order for the loopback mode to be
enabled. The upper level port or channel or parallel channels should not be affected by the loopback
mode.
NOTE: This command is not saved in the router configuration between boots.
The no form of this command disables the specified type of loopback.
Default
no loopback
Page 286 7750 SR OS Interface Configuration Guide