Avaya S8700 Maintenance Manual page 927

For multi-connect configurations

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ATM-EI (Expansion Interface Circuit Pack)

Expansion Interface 2-Way Transmission Test

This test is nondestructive and applies to every ATM-EI, both active and standby.

It is run as part of craft short and long testing, periodic, scheduled, initialization,

and error analysis testing. The test sets up a connection between a Tone-Clock in

one cabinet and a Tone Detector in a separate cabinet and transmits a digital test

count between the EPNs. The ATM-EIs used to set up this connection are chosen

by maintenance, not call processing. After the connection is checked for

dial-tone, the connection is torn down and re-established in the opposite direction.

For this test, the second ATM-EI can reside in any EPN outside the tested

ATM-EI's EPN. Therefore, if the test should fail in either direction, the test is

repeated with a different EPN, if available. This aids the fault isolation procedure.

The test results indicate if the test failed in one or both directions. The test aborts

if the ATM-EIs do not exist on both ends (for example, the EIs are not

administered correctly). If the test passes, the TDM and ATM framer interfaces of

both ATM-EIs are functioning properly. If the test fails, a series of tests are run on

Figure 8-3. Expansion Interface 2-Way Transmit Test #241

shows a schematic of this test.

PN X and PN Y represent any of 44 possible EPNs.

Issue 1 May 2002

iodf2way AWF 040699

Troubleshooting