Pnc Cabling - Fiber Hardware - Avaya S8700 Maintenance Manual

For multi-connect configurations

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PNC Cabling — Fiber Hardware

The term "fiber" is used to refer to all the hardware needed for the three basic

types of connections used to form multi-PN systems. Fiber administration

specifies the endpoints to be connected, optional DS1 CONV locations, and

parameters for DS1 facility line encoding and equalization. The three connection

1. EI-to-EI or EI-to-SNI intercabinet hardware

2. EI-to-SNI or EI-to-EI intracabinet hardware

3. EI-DS1CONV or SNI-DS1CONV hardware

EI-to-EI or EI-to-SNI Intercabinet Fiber-Optic

EI-to-EI or EI-to-SNI intercabinet connections are implemented by installing a

lightwave transceiver on the I/O connector plate for each of the administered fiber

endpoints. Each lightwave transceiver has a receive and a transmit connector for

either a 62.5-micron or 50-micron fiber connection. Standard fibers are available

in various lengths up to 150 feet (46 m) for single-mode fiber and up to 200 feet

(61 m) for multimode fiber. These fibers are used to connect lightwave

transceivers to each other when they are close enough together, or to optical

cross-connect facilities for greater distances.

The lightwave transceivers are powered from I/O connector plate leads attached

to TN570 Expansion Interface circuit pack or a TN573 SNI circuit pack. The

transceivers include loop-around capabilities to support fiber fault isolation. Either

of two different 9823-type multimode transceivers may be used, depending upon

the length of the fiber (table below), or the 300A single mode fiber transceiver.

The transceivers at each end of a given fiber should match.

illustrates the interconnection of fiber-optic hardware.

Fiber Hardware

Maximum Fiber Length

4900 feet (1494 m)

25,000 feet (7620 m)

22 miles (35.4 km)

Figure 2-1 on page

Issue 1 May 2002

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