User's Manual

Site I/O , Span Line, RGPS and Modem Cabling for Sites Equipped with
Customer–Supplied Site I/O Interface
– continued
DRAFT
SC300 1X BTS Hardware Installation, ATP, and FRU Procedures
JAN 2002
4-22
Table 4-23: Pin/Signal Information for Site I/O Cable
BTS Interface DescriptionWire/Stripe
Color
Yellow/Green RX TIP Primary (Redundant)
Yellow/Blue RX RING Primary (Redundant)
Yellow/Purple TX TIP Primary (Redundant)
Yellow/Grey TX RING Primary (Redundant)
Span (Redundant)
Yellow/White RX TIP Secondary (Redundant)
Green/Black RX RING Secondary (Redundant)
Green/Brown TX TIP Secondary (Redundant)
Green/Red TX RING Secondary (Redundant)
Green/Orange MODEM TIP
Green/Yellow MODEM TIP
Green/Blue No connection
Phone (Modem)
Green/Purple No connection
Green/Grey MODEM RING
Green/White MODEM RING
Connecting Customer–Defined
Inputs to the Site I/O Interface
The unit provides eight customer–defined inputs for connection to
external contacts. Each input (a signal/ground pair) is monitored for an
“OPEN” (>50 k Ohms) or “CLOSED” (<3 Ohms) condition.
4