Carrier Access Access Navigator user manual Send DS1 Line Pattern

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.

Access Navigator

Line

Far End

Bit Error Rate Test

	Pattern			Code	Unframed
		Generator				Pattern
Command
	Time Slot						Line
			Framer			Interface
Interchange
							Unit

Line

Test

IN

DS1 OUT

BERT

CSU DS0s

Figure 18-5. Send DS1 Line Pattern

Security: Level 2 (operator)

Syntax: send ds1 <n> line <p2e11p2e15p2e23qrss>

Field

n

p2e11

p2e15

p2e23

Description

DS1 number, 1 to 32, or a range of numbers such as 2-8.

Send 211–1 pattern with a maximum of 10 consecutive zeros and 11 consecutive ones. (Minimum stress testing.)

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.)

Send 223–1 pattern with a maximum of 22 consecutive zeros and 23 consecutive ones. (Maximum stress testing.)

18-66 August 2003 Access Navigator - Release 1.8