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AMT/PTD/PBX/0020/2/4/EN
4.6.2 Switch settings
Note:
The Master/Slave micro-switch of previous LD4 cards no longer exists. The LD4NX RJ
card is always in DECT slave mode; it cannot generate the DECT clock.
The LD4NX RJ 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 17: Description of the CA1 switch on the LD4NX RJ 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 48 V 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 40 V or 48 V remote mains supply.
•
Jumper positioned on SW5 (factory position) is used to select the 48 V power supply.
•
Jumper positioned on SW6 is used to select the 40 V 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 RJ 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. On XS12,
the backplane does not transmit the network synchronisation
(synchronising slots are T0 interfaces built into the UCT card).
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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