User's Manual

Navini Networks, Inc. Ripwave Base Station I&C Guide
40
BTS Input/Output Specifications
Table 3: BTS Input/Output Specifications
Item Description Termination
Protection specified in
Manual
+24 VDC Power
+21 to +27 VDC input,
–/+ terminals
Power Supply/Rectifier
customer equipment
Rectifier must be UL-
listed, comply with
UL60950 or UL60950-1
and have earthed SELV
output
GND Chassis Ground Connection Earth Ground GND required
T1/E1
T1/E1 communication lines off
CC card
T1s/E1s interface switch
customer equipment.
Typical installation
requires DSU or CSU
providing loopback
capability and primary
Type 1 protection.
In-Line Devices such as
DSU/CSU/TSU/PPC must
be UL497 listed
Ethernet
10/100 BaseT communication off
CC card
PC/Router/Hub/Gateway Not Required
UART
D sub serial connection off CC
card, used for on-site
communication to PC
PC Not Required
BBU
BBU connector can accept up to
4 alarm inputs plus GND. BTS
monitors alarms and reports
back condition to EMS. Inputs
come from dry contacts at the
BBU side, normally open circuit,
can be closed circuit for alarmed
condition
BBU customer equipment Not Required
Cabinet Alarms
Door open and HMC alarms plus
2 GND inputs. BTS monitors
alarms and reports back
condition to EMS. Inputs come
from dry contacts at the BBU
side, normally open circuit, can
be closed circuit for alarmed
condition
Cabinet customer
equipment
Not Required
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