ADTRAN 1000R Series - Manual (Page 581)

Command Reference Guide DDS Interface Configuration Command Set
61200510L1-35E Copyright © 2005 ADTRAN 581
data-coding scrambled
Use the data-coding scrambled command to enable the 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).
Syntax Description
No subcommands.
Default Values
By default, the scrambler is disabled.
Applicable Platforms
This command applies to the NetVanta 1000R, 3000, and 4000 Series units.
Command History
Release 1.1 Command was introduced.
Functional Notes
When operating at 64 kbps (clear channel operation), there is a possibility the 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 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