Aastra X Series, Руководство по установке и внедрению

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Page 4-87 10/2008 AMT/PTD/TR/0020/2/7/EN
4.5.2 Switch settings
Note:
The Master/Slave micro-switch of the 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 synchronisation (T0).
Table12: 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:
• 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 status of remote power supply jumpers and synchronisation of an LD4NX ST card in
LD4X mode can be displayed by MMC (menu 3-2-4, "Status of ISDN card jumpers", see
Figure 4-18:).
• Jumper J14 is used to select the (LD4N or LD4X) card's operating mode:
• Leave the jumper in factory position 2-3 for an LD4N configuration.
• Place the jumper on 1-2 or remove the jumper for an LD4X configuration allowing the
use of additional 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).
Note:
In T0, remove the jumpers (conflict between the 48V supplied by the system and the
40V supplied by the public exchange).