Aastra NeXspan 500 - Synchronization on M6501 L;R;RM IP PBX and Succession 6500 Media Gateway with OCT4;OCT4 I; Principles of Installation

Page 140 01/2007 AMT/PTD/PBX/0020/2/4/EN
7.3 Synchronization on M6501 L/R/RM IP PBX and Succession
6500 Media Gateway with OCT4/OCT4 I
7.3.1 Principles of installation
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 synchronization. The OCT4/OCT4 I cards are connected by an ISDN cable
via a synchronization port. This cable carries the multi-frame and bit clocks.
Figure 7-5: Multi-site synchronization with OCT4/OCT4I
Each OCT4/OCT4 I card has two synchronization 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.
OCT4 I
J3 J6
OCT4 I
J3 J6
OCT4 I
J3 J6
OCT4 I
J3 J6
Paster site Slave site 1
Slave site 2
Slave site 3
Link 1
Link 2
Link 3
L1
L2
L3