User's Manual

Site I/O, Span Line, RGPS, and Modem Cabling for Sites Equipped With
Primary Surge Suppressor
– continued
JAN 2002
5-23
SC300 1X BTS Hardware Installation, ATP, and FRU Procedures
DRAFT
Connecting the RGPS Cable to
the Primary Surge Suppressor
The RGPS cable (cable M) is connected to the Primary Surge Suppressor
punchdown block (Sync Forward). Table 5-16 provides the punchdown
block to RGPS connections.
Table 5-16: Connecting the RGPS to the Site I/O Cable
Punchdown Block RGPS (Cable M)
Sync Forward
Descriptions
Punchdown Block
Location
RGPS Description RGPS Color Code
(wire/stripe)
Data from Head – OSP14T Transmit Port – Green/Black
Data from Head + OSP14R Transmit Port + Green
Data to Head – OSP15T Receive Port – White/Black
Data to Head + OSP15R Receive Port + White
1 pps from Head – OSP16T 1 PPS Timing – Brown/Black
1 pps from Head + OSP16R 1 PPS Timing + Brown
RGPS 28V OSP18T Power 1 Blue
RGPS Ground OSP18R DC Ground 1 Blue/Black
RGPS 28V OSP19T Power 2 Yellow
RGPS Ground OSP19R DC Ground 2 Yellow/Black
N/A N/A No connect Red
N/A N/A No connect Red/Black
Connecting the Span Line
Cable to the Primary Surge
Suppressor
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.
The second span is used to support the Span Line Daisy Chain cabling
option.
Connecting a Phone Line to the
Primary Surge Suppressor
(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.
5