AMT/PTD/PBX/0020/2/4/EN 01/2007 Page 141
This timeout can be adjusted via MMC (see chapter - Multi-site programming, § 11.4).
Adjustment is made in 100 m steps on the slave PBXs, with the following formula applied:
8xN + totalL
where N = number of slave PBXs from master PBX
and totalL = total length of cable between master and slave PBX
Example figure above:
• L1 = 50m, L2 = 200m, L3 = 27 m
• Compensation for slave site 1:
8x1 + 50 = 58 m => compensation < 100m
• Compensation for slave site 2:
8x2 + 50 + 200 = 266 m => compensation < 300m
• Compensation for slave site 3:
8x3 + 50 + 200 + 27 = 301 m => compensation < 400m
Note:
The maximum cumulative length of the cable must not exceed 1952 m.
The cumulative length of the cable between a slave N and slave N+2 must not exceed
600 m.
7.3.2 Wiring of synchronization ports
ISDN straight wiring:
Tableau 6 : Wiring of synchronization ports
Signal RJ45 J6 RJ45 J3
1st pair
2.048 MHz clock
PHBIT 3 3
NHBIT 6 6
2nd pair
DECT clock
PHDECT 4 4
NHDECT 5 5
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