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18-66 August 2003 Access Navigator - Release 1.8
CLI Language Reference
CLI Command List
Purpose: Transmits an unframed test pattern to verify the quality of the DS1 signal reaching far-
end CSU equipment, such as the Access Bank II. The operator can select from several
Pseudo Random Bit Sequence (PRBS) and Quasi Random Signal Source (QRSS)
patterns.
When the operator commands the selected pattern, the Access Navigator generates and
transmits the unframed pattern over the DS1. See Figure 18-5. Sending an unframed
pattern will cause a DS1 Loss of Frame (LOF) on both the Access Navigator and the
remote CSU.
An external Bit Error Rate Tester (BERT) can be located anywhere on the network or
at the customer premises as shown in the figure.
When testing is complete, the send ds1 off command must be used to turn off the
test pattern.
Figure 18-5. Send DS1 Line Pattern
Security: Level 2 (operator)
Syntax: send ds1 <n> line <p2e11|p2e15|p2e23|qrss>
Field Description
n DS1 number, 1 to 32, or a range of numbers such as 2-8.
p2e11 Send 2
11
–1 pattern with a maximum of 10 consecutive zeros and
11 consecutive ones. (Minimum stress testing.)
p2e15 Send 215–1 pattern with a maximum of 14 consecutive zeros and
15 consecutive ones. (Provides maximum number of consecutive
zeros permissible in framed, non-B8ZS testing.)
p2e23 Send 2
23
–1 pattern with a maximum of 22 consecutive zeros and
23 consecutive ones. (Maximum stress testing.)
DS1
Line
Interface
Unit
Framer
Access Navigator
Time Slot
Interchange
Code
Generator
Line
Pattern
Command
IN
OUT
CSU
Far End
Bit Error Rate Test
DS0s
BERT
Line
Test
Unframed
Pattern