Synchronisation On M6501 L/R/Rm Ip Pbx And Succession 6500 Media Ga; Principle - Aastra X series Installation And Implementation Manual

8.3 Synchronisation on M6501 L/R/RM IP PBX and Succession
6500 Media Gateway with OCT4/OCT4 I
8.3.1

Principle

In a network containing several PBXs fitted with an OCT4 or OCT4 I card (M6501 L/R/RM IP
PBX and Succession 6500 Media Gateway), it is not necessary to wire the DECT base stations
with a third pair for synchronisation. The OCT4/OCT4 I cards are connected by an ISDN cable
via a synchronisation port. This cable carries the multi-frame and bit clocks.
Paster site
J3 J6
Slave site 3
J3 J6
Each OCT4/OCT4 I card has two synchronisation ports (RJ45 connectors ): a secondary port, J6
(output) and a primary port, J3 (input).
The secondary port of the master or N slave is connected to the primary port of the first slave or
slave N+1.
The DECT clocks are transmitted from one PBX to another with a timeout depending on:
• the length of the connection cable
• the timeout set for the transmitters/receivers of each PBX.
Page 8-151
OCT4 I
OCT4 I
Figure 7-5: Multi-site synchronisation with OCT4/OCT4I
10/2008
Link 1
L1
Link 2
Link 3
L3
Slave site 1
OCT4 I
J3 J6
L2
Slave site 2
OCT4 I
J3 J6
AMT/PTD/TR/0020/2/7/EN