Avaya 03-300430 User Manual

This is a set of four tests that check the operation of the information and control channels used 
between Communication Manager and the Digital Line port circuit. This is an Internal Loop 
around test only and does not check building wiring. See Test #175 for external loop around 
tests to the data module.

1. Communication Manager first sends a message to the on-board microprocessor to loop 

around both the information and control channels for the port. Then, the primary information 
channel loop back test is run. The test is performed by sending a digital count from the 
Tone-Clock circuit pack on the primary channel time slot and receiving the same digital 
count with a General-Purpose Tone Detector. The digital count looks like transparent data to 
the on-board microprocessor.

2. With the port still in loop-around mode, the S Channel Loop-around test is performed next. 

This test consists of sending four different transparent patterns to the on-board 
microprocessor, receiving them back, and comparing them.

3. The third test is a loop around test for the secondary information channel. It is performed 

only if a secondary data module is assigned to the port.

4. The fourth test is a Conference test of the primary channel. This is the same test as Analog 

Line Conference test (#6).

Only one result is reported for the three tests run. If any test fails or aborts, the sequence is 
stopped.

ABRT

Internal system error

1. Retry the command at 1-minute intervals up to 5 times.

1000

ABRT

System resources required to run this test are not available. The port may 
be busy with a valid call.

1. Use display port location to determine the data module 

extension. Use status data module with the extension number to 

determine the service state of the data module. If the service state 
indicates that the data module is in use, then the port is unavailable 
for certain tests. You must wait until the port is idle before retesting.

2. If the port status is idle, then retry the command at 1-minute intervals 

up to 5 times.

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