Lucent Technologies Comcode 108678723 manual Testing the 120A 2 Icsu

DEFINITY ECS Release 8.2 ATM Installation,	Issue 1
Upgrades, and Administration 555-233-124	April 2000
3 Installing a DEFINITY ECS ATM-PNC
Synchronization Installation and Testing	3-24

Use the procedures in Table 3-11 to test the 120A ICSU with the 700A DS1 CPE loopback jack.

Table 3-11. Testing the 120A 2 ICSU

√	Step	Action	Command	Description
	1.	Busyout the	busyout board	Busyout the DS1 circuit pack.
		DS1 circuit pack	UUCSS
	2.	Start the CPE	test ds1-loop	Start the CPE loopback test.
		loopback test	UUCSS	■ If the test passes, the splitter is functioning
			cpe-loopback-
				properly; go to Step 3.
			jack-test-begin
				■ If the test fails, follow the procedures in
				‘‘Troubleshooting synchronization (400A
				only)’’ on page 6-17.
	3.	Terminate the	test ds1-loop	Terminate the test .
		test	UUCSS
			end-loopback/
			span-test
	4.	Release the	release board	Release the DS1 circuit pack .
		DS1 circuit pack	UUCSS
	5.	Reassign	change	Reassign sync to the designated DS1 circuit pack .
		synchronization	synchronization

Connected through a DSU/CSU. Before connecting any of the timing hardware, ensure that the DSU/CSU is configured to report loss of signal alarms.

If using a 316X CSU connected to a T1 facility and used as the DEFINITY synchronization source, verify or change the 316X settings (options) to ensure that it sends an AIS blue alarm to the DEFINITY ECS DS1 circuit pack or to the ATM switch whenever a network LOS (loss of signal) occurs. Upon receiving a LOS, the DEFINITY ECS or ATM switch transfers to its backup synchronization source.