User's Manual

Span Line Daisy Chain Cabling for Multiple BTS Sites Equipped with

Optional Primary Surge Suppressor

DRAFT

SC300 1X BTS Hardware Installation, ATP, and FRU Procedures

JAN 2002

5-32

Objective

The objective of this procedure is to install span line cabling between

multiple BTS sites equipped with Primary Surge Suppressor in an open

daisy chain configuration.

Background

This feature allows multiple BTS sites to be linked together in an open

daisy chain loop using a single T1/E1 span. This will reduce the number

of spans necessary to support a CDMA system and minimize unused

channels.

Each BTS site may contain up to four units. A maximum of 12 BTS

sites may be combined in a single daisy chain.

Required Cables

The following cables are necessary to do this procedure.

Table 5-24: Required Cables for Span Line Daisy Chain Cabling

Cable Qty. Part Number Description

W 1–3 Customer

Supplied

Span Line Daisy Chain Cable

Procedure

Attach the span line daisy chain cable (Cable W) to the site I/O interface

of each BTS site. Refer to Figure 5-23 and Table 5-25.

Cable Connections

Table 5-25 shows the cable run information for span line daisy chain

cabling for BTS sites equipped with the Primary Surge Suppressor.

For a full signal description of the Site I/O cable refer to Table 5-14 in

the “Site I/O, Span Line, RGPS and Modem Cabling for Sites Equipped

with Optional Primary Surge Suppressor” procedure.

The pin number and wire color are based on the Site I/O

cable. The pin number corresponds to pins on the Site I/O

junction box connectors.

NOTE