User's Manual

Site I/O , Span Line, RGPS and Modem Cabling for Sites Equipped with
Customer–Supplied Site I/O Interface
– continued
JAN 2002
4-23
SC300 1X BTS Hardware Installation, ATP, and FRU Procedures
DRAFT
Connecting the RGPS Cable to
the Site I/O Interface
The RGPS (cable M) is connected to the Site I/O interface (Sync
Forward) of the BTS. Table 4-24 provides the Sync Forward to RGPS
connections.
Table 4-24: Connecting the RGPS to the Site I/O Cable
Site I/O Cable RGPS (Cable M)
Sync Forward
Descriptions
Sync Forward Color
Code (wire/stripe)
RGPS Description RGPS Color Code
(wire/stripe)
Data from Head – Brown/Grey Transmit Port – Green/Black
Data from Head + Brown/White Transmit Port + Green
Data to Head – Red/Black Receive Port – White/Black
Data to Head + Red/Brown Receive Port + White
1 pps from Head – Red/Orange 1 PPS Timing – Brown/Black
1 pps from Head + Red/Yellow 1 PPS Timing + Brown
RGPS 28 V
Red/Purple
Power 1 Blue
Red/White
RGPS Ground
Red/Grey
DC Ground 1 Blue/Black
Orange/Black
RGPS 28 V Orange/Brown Power 2 Yellow
RGPS Ground Orange/Red DC Ground 2 Yellow/Black
No connect N/A No connect Red
No connect N/A No connect Red/Black
NOTE: The Orange/Yellow and Orange/Green wires should be trimmed back to the grey outer jacket of the
Site I/O cable.
Connecting the Span Line
Cable to the Site I/O Interface
The unit provides two, four–wire T1/E1 interfaces for backhaul support.
Each interface is made up of Transmit Tip/Ring and Receive Tip/Ring
connections.
The Transmit and Receive data flow is given from the perspective of the
unit. Only a single span line (Primary) is required for BTS operation.
Connecting a Phone Line to the
Site I/O Interface (Modem
Support)
The unit provides a two–wire analog phone line interface for modem
support. The unit Tip and Ring signals are connected to the external
phone line Tip and Ring.
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