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AMT/PTD/PBX/0020/2/4/EN
SW7
and
SW8
: the jumpers allow the selection of a 40 V or 48 V power supply.
Note:
The power supply units of the NeXspan range do not supply ISDN 40 V. To supply 40 V
to sets and/or base stations, connect an external power supply unit to the T3 connector
on the LD4 RJ card.
Table 9: Description of switches SW7 and SW8 on the LD4 RJ card
4.4.3 Position of LD4 RJ card
The possible slots and restrictions for the LD4 card in a NeXspan cabinet are the same as for the
LD4NX card (see section 4.6.5).
4.4.4 Connecting base stations
Each base station is connected to the ISDN S0 (BRI) of an LD4 RJ card, and uses two pairs: 1
transmit pair and 1 receive pair.
Note:
If there are a DECT base station and an S0 terminal (other than the base station) on the
same card, the base station must be powered with 40V. The NeXspan power supply
units do not supply ISDN 40 V. To supply 40 V to sets and/or base stations, connect an
external power supply unit to the T3 connector on the LD4 RJ card.
SW7 and SW8
Positions
Feature
1-2
48 V selected
2-3
40 V selected
40
48
3
2
1
3
2
1
40
48
3
2
1
3
2
1
CONSOLE
LD4 X
T
0
S
0
T
3
S
3
P
B
X
_
M
A
T
R
IX
_
C
A
R
T
E
_
L
D
4
R
J
_
F
A
V
_
0
1
_
0
1
Summary of Contents for NeXspan C
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