ADTRAN AOS Version R10.1.0 Command Reference Manual page 1559

Command Reference Guide DDS Interface Command Set
data-coding scrambled
Use the data-coding scrambled command to enable the digital data service (DDS) OS scrambler to
combine user data with pattern data to ensure user data does not mirror standard DDS loop codes. The
scrambler may only be used on 64 kbps circuits without Frame Relay signaling (clear channel). Use the no
form of this command to disable this feature.
Syntax Description
No subcommands.
Default Values
By default, the scrambler is disabled.
Command History
Release 1.1 Command was introduced.
Functional Notes
When operating at 64 kbps (clear channel operation), there is a possibility the data terminal equipment
(DTE) data sequences may mimic network loop maintenance functions and erroneously cause other
network elements to activate loopbacks. Use the data-coding scrambled command to prevent such
occurrences. Do not use this command if using Frame Relay or if using Point-to-Point Protocol (PPP) to
another device other than an AOS product also running scrambled.
Usage Examples
The following example enables the DDS OS scrambler:
(config)#interface dds 1/1
(config-dds 1/1)#data-coding scrambled
60000CRG0-35E Copyright © 2012 ADTRAN, Inc. 1559