Aastra NeXspan C, Installation Manual

Page: 72 / 196

Page 72 01/2007 AMT/PTD/PBX/0020/2/4/EN
4.3.2 Description of the switches
CA1.1 to CA1.4 : these switches are used to adapt lines (factory setting, leave set to ON).
CA2 (located on the copper side): configure according to the card's location and mode (master/
slave).
For LD4 ST in T0
Table 2: Description of switches CA2.1 and CA2.2 on the LD4 ST card
SW1 : factory reserved; leave in position 1-2.
SW3 , SW4 , SW5 , and SW6 : these jumper switches are used to disable each interface's remote
power supply when a T0 interface is connected.
Table 3: Description of switches SW3 to SW6 on the LD4 ST card
SW7 and SW8 : these jumper switches are used to set either a 40 V or 48 V remote 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 J2 connector
on the LD4 ST card
.
CA2.1
(VALH)
Feature
ON Leave set to ON position. If the LD4 ST card is fitted in a synchronising slot,
the ON position allows the PBX to take the ISDN network clock as reference
clock. In a non-synchronising slot, CA2.1 has no effect. The synchronising
positions in an XL cabinet are the locations 1-00 to 1-05. For an XS cabinet,
all positions are synchronising.
OFF Do not set it to OFF position (in OFF position, the ISDN clock is not taken as
reference, whatever the slots).
Case of LD4 ST in S0 configuration (for DECT BS)
CA2.2 (M/S) Feature
M LD4 ST master: position not allowed
S to be set in position E on all LD4 ST cards
SW3
Remote power supply for interface 3
SW4
Remote power supply for interface 2
SW5
Remote power supply for interface 1
SW6
Remote power supply for interface 0
SW7 and
SW8
Positions Feature
1-2 Selects the 48 V power supply
2-3 Selects the 40 V power supply
40
48
3
2
1 3
2
1
40
48
3
2
1
3
2
1