Avaya S8700 Maintenance Manual page 1489

For multi-connect configurations

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EXP-INTF (Expansion Interface Circuit Pack)

Figure 8-37. Center Stage Switch Configuration with Duplicated PNC

In a duplicated center stage switch configuration, two EIs are needed in each port

network. One resides in the PNC's A side and one in the B side. Note that a PNC

designation (A or B) does not directly designate the carrier where an EI resides.

The active PNC's EI is the one acting as the PN's Archangel (TDM bus master).

This EI's amber LED should be blinking at a rate of 2 seconds on and 200 ms off.

Whereas, the amber LED on standby PNC's EI should be off. The PN'S EI circuit

packs are located in the first slot of the switch node carriers, although they may be

located in port carriers.

An PN (and thus, the EIs contained within it) can be remoted via a DS1 Converter

complex. This requires that a fiber link (providing connectivity to the remoted PN)

be administered with an associated DS1 Converter complex. This complex

consists of two TN574 DS1 Converter (DS1 CONV) circuit packs connected by

from 1 to 4 DS1 facilities.

converter complex fits into an EI-to-SNI or EI-to-EI fiber link. For more

information, see

Figure 8-38 on page 8-768

''DS1 CONV-BD'' on page

shows where the DS1

Issue 1 May 2002

Troubleshooting