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P31003-H3560-S403-54-7620, 09/05
HiPath 3000 V6.0, HiPath 5000 V6.0, Provisional Service Manual
3-221
Boards for HiPath 3000
Peripheral Boards
3.3.21 STLS4R
Introduction
The STLS4R (Subscriber And Trunk Line S
0
RACK) board provides four S
0
basic rate access-
es for HiPath 3500 and HiPath 3300 (19-inch housing). These are operated either as external
trunk interfaces in TE (terminal equipment) mode or as internal S
0
buses (PMP bus) in NT (net-
work terminator) mode with cross-connected RX-TX lines.
Interfaces
>
The board does not supply terminals with power; In this case, power must be sup-
plied locally using a local plug-in power supply or a bus power supply unit, for exam-
ple.
Figure 3-89 STLS4R Interfaces (S30817-K924-Z313)
X1
50
2
X2
STLS4R
4 S
0
ports
(MW8
(RJ45)
jacks)
To
CUPR
CUCR
8 ... 1
3 = SX +
4 = SR +
5 = SR –
6 = SX –
SX = Signal transmit
SR = signal receive
11
48
S
0
port 1
S
0
port 4
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