Alcatel-Lucent 7750 Configuration Manual page 368

Interfaces
config>port>tdm> e3
Description This command enables logging of DS-3 and E-3 alarms for a DS-3/E-3 port or channel.
The no form of this command disables logging of the specified alarms.
Parameters ais — Reports alarm indication signal errors. When configured, ais alarms are not raised and cleared.
Default
los — Reports loss of signal errors. When configured, los traps are not raised and cleared.
Default
oof — Reports out-of-frame errors. When configured, oof alarms are not raised and cleared.
Default
rai — Reports resource availability indicator events. When configured, rai events are not raised and
cleared.
Default
looped — Reports looped packets errors.
Default
scramble
Syntax [no] scramble
Context config>port>tdm>ds1>channel-group
config>port>tdm>ds3
config>port>tdm>e1>channel-group
config>port>tdm>e3
Description This command enables payload scrambling on channel groups.
Scrambling randomizes the pattern of 1s and 0s carried in a SONET frame. Rearranging or scrambling the
pattern prevents continuous strings of all 1s or all 0s and meets the needs of physical layer protocols that rely
on sufficient transitions between 1s and 0s to maintain clocking.
For ATM, this command enables or disables ATM cell-level payload scrambling/descrambling using x43+1
polynomial as defined in ITU-T I.432.1. Scrambling is enabled by default for the ATM path/channel. Note
that this scrambling is done in addition to SONET/SDH frame scrambling/descrambling, which is always
enabled in the framer.
The no form of this command disables scrambling.
Default no scramble
keepalive
Syntax keepalive time-interval [dropcount drop-count]
Page 368
ais alarms are issued.
los traps are issued.
oof alarms are not issued.
rai alarms are not issued.
looped alarms are not issued.
7750 SR Interface Configuration Guide