Page 8-167
10/2008
AMT/PTD/TR/0020/2/7/EN
Case of multisite F4/F6 or F4/F1 device with F4 equipped with an FPHBG
back plane and CSH, LDS and/or LDT cards
The slave PBX must be synchronised via an inter-site link (2.048 MHz clock).
The base stations must be wired in three pairs (combination of LD4 / LDS (or LDT), LD4N / LDS
(or LDT), LD4X / LDS (or LDT)). The synchronization pair carries the 800 ms clock.
Note:
The LD4X (removing jumper J14 from an LD4NX card and offering additional functions)
is only compatible on the NeXspan S/L/D range and as of software release R4.1.
(1)
: use a repeater if there are more than 5 slave base stations
(2)
: even in an IP multi-site network, as the IP network is not synchronising, the PBXs must be
connected by a synchronising inter-site link.
Figure 7-21: Contiguous multisite F4/F6 or F4/F1 (with F4 fitted with FPHBG/CSH/LDS/LDT card)
synchronising inter-site link
2.048 MHz clock
R
E
P
F4
L
D
S
/
L
D
T
F1
or
F6*
L
D
4
or
L
D
4
N
IP network
(2)
master base
slave base
slave base stations
800 ms clock synchro pairs
S0 bus
S0 bus
master PBX
slave PBX
.
* on F6, base stations can be connected to the front panel of UCT-S cards.
L
D
4
X
Содержание X Series
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