Page 100 01/2007 AMT/PTD/PBX/0020/2/4/EN
5.2.6 LDS card layout
The LDS card can be fitted in the shelves in accordance with the configuration file. The card is
connected to the synchronous bus via the AVADQ or AVLDT terminator inserted in a CFX front
slot (corresponding to CLX slot on the LDS card).
For more detailed information, refer to document [12] in the reference documents.
The LDS card must be connected to a synchronising clock input in the PBX if a T0 interface is
synchronising on the LDS card.
Each group of eight S interfaces must be connected to a complete junction (32 TS) on the
synchronous bus of the NeXspan 50. The LDSA card thus requires two junctions.
To synchronize 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.
Cards CLX0 CLX1 CLX2 CLX3 CLX4 CLX5 CLX6
Junctions
J8 + J12 J9 + J13 J10 + J14 J24 + J28 J25 + J29 J26 + J30 J27 + J31
Capacity
8S (J8)
16S (J8, J12)
8S (J9)
16S (J9, J13)
8S (J10)
16S (J10, J14)
8 S (J24)
16 S (J24, J28)
8 S (J25)
16 S (J25, J29)
8 S (J26)
16 S (J26, J30)
8 S (J27)
16 S (J27, J31)
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