ZyXEL Communications omni series user manual Diagnostics, Test Description, Seq

15 Diagnostics

The omni can perform its own diagnostic tests, providing you with valuable information. This chapter provides diagnostic tables for interpreting test results.

The following table is a summary of the omni's self-tests for external models:

Test	LED	LED	LED	LED	Test Description
Seq.	LNK	B1	B2	AA
1	on*	off	off	off	Memory test.
2	off	on*	off	off	ISDN chip interface test.
3	off	off	on*	off	ISDN chip functional test.
4	off	off	off	on*	HDLC functional test.

* The LED lights up while test is in progress and blinks if a test fails.

The following table is a summary of the omni's self-tests for internal models:

Blinks	Test Description
1	Memory test failed.
2	ISDN chip interface test failed.
3	ISDN chip functional test failed.
4	HDLC functional test failed.

ONOTE: When a self test fails the LED will blink 1-4 times in succession, followed by a 1.5 second pause. After completing a successful self test the LED will remain off.

Diagnostics

The omni ISDN TA provides several diagnostic capabilities:

∙Power-on Self-test.

∙Local Digital Loopback Test.

100 Diagnostics