Aastra X Series, Installation And Implementation Manual

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Page 8-165 10/2008 AMT/PTD/TR/0020/2/7/EN
8.6.3 F1/F2/F4 or F6/F2/F4 contiguous multi-site configuration
The slave PBXs must be synchronised via inter-site links (2.048 MHz clock).
The base stations must be wired in three pairs (F2 has no synchronization port + LD4/LDS,
LD4NX/LDS combination). The synchronization pair carries the 800 ms clock.
Note:
F2 has no synchronization ports; so for a multisite configuration between an F2-F4 fitted
with FPHBG/CSH or an F2-F4 fitted with FPHBG2/CSI/BCSI, the configuration of the
multisite synchronization is the same.
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 7-19: F1/F2/F4 or F6/F2/F4 contiguous multi-site configuration
Synchronising
inter-site link
R
E
P
F2
L
D
S
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
slave PBX
slave PBX
F4
L
D
S
or
L
D
T
master PBX
slave base stations
S0 bus
Synchronising
inter-site link
* on F6, base stations can be connected to the front panel of UCT-S cards.
L
D
4
X