Avaya S8700 Maintenance Manual page 1515

For multi-connect configurations

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EXP-INTF (Expansion Interface Circuit Pack)

Expansion Interface 2-Way Transmission

This test is nondestructive. The EI 2-way transmission test is a basic connectivity

test between two PNs. The test first sends dialtone from the cabinet of the EI

circuit pack under test through the Center Stage Switch, through the DS1 CONV

circuit packs, and through another EI circuit pack to a tone detector in the other

cabinet. The connections are then reversed and the tone is passed in the

opposite direction. If the system is equipped with a Center Stage Switch, and this

test either fails or aborts with the above connection, a second PN is chosen (if one

is available and the EI circuit pack is In-Service) and the same test is run on this

new connection. This helps in the isolation of the fault. Since two EI circuit packs

are involved in the connection, either one of them could be at fault and this

repeated test can help determine which one is actually at fault.

The path used in this test is represented in

TDM BUS (PN X)

Figure 8-40. Two-Way Circuit Switch Transmission Test

TDM BUS (PN Y)

Issue 1 May 2002

Troubleshooting