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AMT/PTD/PBX/0020/2/4/EN
4.5.2 Switch settings
Note:
The Master/Slave micro-switch of previous LD4 cards no longer exists. The LD4NX ST
card is always in DECT slave mode; it cannot generate the DECT clock.
The LD4NX ST card has no micro-switch for downloading the flash memory with a BOF3
type tool (automatic detection).
•
Micro-switch
CA1
(HVAL) is used to configure synchronization (T0).
Table 12: Description of the CA1 switch on the LD4NX ST card
•
Jumpers
J1_1, J1_2, J1_3 and J1_4
are used to enable the remote power supply (40 V or
48 V) of each interface where an S0 interface is connected:
Caution: In T0, remove the jumpers (conflict between the 48V supplied by the
system and the 40V supplied by the public exchange).
•
J1_1: Remote power supply for interface 0
•
J1_2: Remote power supply for interface 1
•
J1_3: Remote power supply for interface 2
•
J1_4: Remote power supply for interface 3
Note:
J2_1, J2_2, J2_3 and J2_4 are storage positions for jumpers.
•
A jumper positioned on SW5 or SW6 is used to select the 40V or 48V remote mains supply.
•
Jumper positioned on SW5 (factory position) is used to select the 48V power supply.
•
Jumper positioned on SW6 is used to select the 40V power supply.
Note:
The jumper status of remote supply and synchronization for an LD4NX ST card in LD4X
mode can be displayed by MMC (menu 3-2-4, "ISDN board switches status", see Figure
4-18).
•
Jumper J14 is used to select the card's operating mode (LD4N or LD4X) :
•
leave the jumper in factory position 2-3 for a LD4N configuration,
•
plug the jumper into pins 1 and 2 or remove the jumper for a LD4X configuration used to
implement additionnal functions.
MICRO-SWITCH CA1 (HVAL)
EXPLANATION
ON
Leave set to ON position. If the LD4NX 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, CA1 has no impact. The
synchronising positions in an XL cabinet are slots 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).
Summary of Contents for NeXspan C
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