Carrier Access SNMP Self Test Fault Indications, Card Self Test, No Test Tone During a Self Test

Self Test Fault Indications

2. Verify that T1 Test 1 or T1 Test 2 LED turns green after approximately 16 seconds.

12.3.2 Card Self Test

At the start of the self test sequence, when the Controller asserts the self test bit toward the voice card, the following events occur on a per channel basis:

•The voice card reads from the Controller and sees the self test flag at logic 1 (active).

•The received A/B signaling bits are not processed since the signaling state machine is skipped in software.

•The outputs of the signaling state machine are forced to:

Table 12-1: Card Self Test Signaling States

Signaling	Output
Ringing voltage	OFF
Tip Lead	GROUNDED
Quiet Channel	OFF
Ringback	ON
A bit to network	ZERO
B bit to network	ONE
T1 Test 1 LED	RED (failure)
T1 Test 2 LED	RED (failure)

12.4 Self Test Fault Indications

12.4.1 Voice Channel LED is RED during Self Test

During Self-Test, a red channel LED may come on, but does not indicate a problem.

12.4.2 No Test Tone During a Self Test

If no ringback tone is present at the drop for a particular voice channel during a self test, there may be an open or broken pair in the voice cable. If no test tone is present on any channel during a self test, the voice cable may be disconnected. To correct the problem:

1.Check the voice cable for a loose connection.

2.Check the voice cable for a broken/open pair.

3.If no test tone is present on a set of 12 channels during a self test, the associated voice card may be faulty. Try replacing the voice card.

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