User's Manual Part 1

BTS Equipment Identification

Mar 2001

1-13

SCt4812T CDMA BTS Optimization/ATP

DRAFT

Equipment Overview

The Motorola SC 4812T BTS can consist of the following equipment

frames:

 At least one BTS starter frame

– +27 V BTS (see Figure 1-2)

––48 V BTS (see Figure 1-3)

 Ancillary equipment frame (or wall mounted equipment)

 Expansion frames

– +27 V BTS (see Figure 1-4)

––48 V BTS (see Figure 1-5)

Ancillary Equipment Frame

Identification

Equipment listed below can be wall mounted or mounted

in a standard 19 inch frame. The description assumes that

all equipment is mounted in a frame for clarity.

NOTE

If equipped with the RFDS option, the RFDS and directional couplers

are the interface between the site antennas and the BTS or Modem

frame. The RFDS equipment includes:

 Directional couplers

 Site receive bandpass/bandreject filters

 RFDS

Logical BTS

The BTS software implements the logical BTS capability. Previously, all

BTS frames co–located at a single site had to be identified in the

network with separate and distinct BTS ID numbers. In the Logical BTS

feature, all frames located at a single BTS site are identified with unique

Frame ID numbers (Frame ID Numbers 1, 101, 201, 301) under a single

(site) BTS ID number. A logical BTS can consist of up to four

SC 4812T frames.When the LMF is connected to frame 1 of a logical

BTS, you can access all devices in all of the frames that make up the

logical BTS. A logical BTS requires a CDF file that includes equipage

information for all of the logical BTS frames and their devices and a

CBSC file that includes channel data for all of the logical BTS fames.

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