Carrier Access user manual Access Navigator Payload Code

Diagnostics & Troubleshooting

Send DS1 Payload Pattern

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 <n> off command must be used to turn off the test pattern.

NOTE: The p2e patterns are intended only for Access Navigator loop tests and for tests between two Access Navigators. Other test equipment will not recognize these patterns.

NOTE: This command works with ESF and D4 (SF) framing.

		Access Navigator
	Payload
					Code	Framed
	Pattern
			Generator			Pattern
Command
	Time Slot						Line
				Framer		Interface
Interchange
							Unit

Far End

Bit Error Rate Test

Payload

Test

BERT

IN

DS1 OUT CSU DS0s

Figure 15-24. Send DS1 Payload Pattern

Syntax: send ds1 <n> payload <allonesallzerosf1in8p2e11p2e15p2e23qrss>

Field	Description
n	DS1 number, 1 to 32, or a range of numbers such as 2-8.
allones	Send framed all-ones pattern. This can be used as a “keep alive”
	signal, idle code, and in measuring the T1 power level.
allzeros	Send framed all-zeros pattern. This can be used to test T1 circuits
	for B8ZS clear channel capability and to find equipment
	incorrectly set to AMI line code.
	Note: When using an all-zeros pattern, a T1 test set (such as a
	T-Berd 224 or Sunset T3) must be used to monitor for errors in
	the all-zeros pattern from the Access Navigator or looped back
	from a far-end network element.
f1in8	Send framed 1-in-8 pattern (also called a 1-and-7 pattern) in
	which each payload byte contains the bit pattern 01000000.
	(Minimal ones density test for T1 circuits with AMI coding.)
p2e11	Send 211–1 pattern with a maximum of 10 consecutive zeros and
	11 consecutive ones. (Minimum stress testing.)

Access Navigator - Release 1.8 August 2003 15-45