Switch Settings; Ldt Card Layout - Aastra X series Installation And Implementation Manual

6.3.4 Switch settings

Automatic resynchronisation switch
CA1.2 = ON
CA1.2 = OFF -> LDS operation without automatic resynchronisation
Remote power supply configuration straps
• J1 set to 1-2 = Remote power supply ON
• J2 set to 1-2 = Remote power supply ON
• J1 set to 2-3 = Remote power supply OFF
• J2 set to 2-3 = Remote power supply OFF
J1: - 48 V or - 40 V
J2: +48 V or +40 V
The two jumpers must be positioned on the same side: 1-2 or 2-3.
DECT configuration switches
• CA1.1 = ON -> Slave mode
• CA1.1 = OFF -> Master mode

6.3.5 LDT card layout

The LDT card can be fitted in the shelves in accordance with the configuration file. The card is
linked to the synchronous bus via the AVADQ plug (
or AVLDT plug (
plug)
front CFX position (corresponding to the position of CLX on the LDT card).
For more details, refer to "Reference documents" on page 13.
The LDT card must be connected to a synchronising clock input in the PBX if a T0 interface is
synchronising on the LDT card.
Each group of 8 S interfaces must be connected to a complete junction (32 TS) on the
synchronous bus of the NeXspan 50. The LDTA card thus requires two junctions.
Cards CLX0
Trunks J8 + J12
Capacity 8S (J8)
16S (J8, J12)
To synchronise the NeXspan 50, connect the ISDN clock extracted from a T0 access
(synchronising T0 interface) to a 2.048 MHz clock input of the RSU.
AMT/PTD/TR/0020/2/7/EN
-> Automatic resynchronisation
loop DECT clock recovery is possible with FPHBG2 back plane)
CLX1 CLX2
J9 + J13 J10 + J14
8S (J9) 8S (J10)
16S (J9, J13) 16S (J10,
J14)
loop DECT clock recovery is not possible with this
CLX3
J24 + J28 J25 + J29
8 S (J24) 8 S (J25)
16 S (J24, J28) 16 S (J25, J29)
10/2008
connected in the
CLX4 CLX5
J26 + J30
8 S (J26)
16 S (J26, J30)
CLX6
J27 + J31
8 S (J27)
16 S (J27,
J31)
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