Connecting Dect Radio Base Stations To F2 Pbxs; Presentation; Base Station Syncronization; Syncronization By Additional Pair - Matra Nortel MC 6500 Manual

5. CONNECTING DECT RADIO BASE STATIONS TO F2 PBXs

5.1

PRESENTATION

The F2 range includes the following PBXs:
♦
MC 6504 (OCI processor card)
♦
MC 6504E (OCI processor card)
♦
MC 6504L (OCK or OCI processor card)
♦
MC 6540 (OCK processor card)
♦
MC 6502
The following S0 interface cards are used to connect DECT radio base stations for the
F2 range:
♦
LDSA or LDSB cards (16 or 8 base stations, 2 or 4 channels)
♦
LAS card (8 base stations 2 channels)
5.2 BASE STATION SYNCHRONIZATION
Since the appearance of LDS cards, two base station synchronization modes exist:
♦
synchronization by additional pair
♦
synchronization by S-frame m-bit
5.2.1 SYNCHRONIZATION BY ADDITIONAL PAIR
This mode is used in configurations using only LAS cards, or LAS cards combined with
LDD cards.
One base station is then declared "master" and the others "slave" (whether 2 or 4 channel).
The DECT clock signal is transmitted by the master base station to the slave base stations.
5.2.2 SYNCHRONIZATION BY M-BIT OF THE S-FRAME
This configuration requires exclusive use of the LDS card in the system. There is only one
LDS card in the system which is declared as master and which transmits the DECT clock to
its own base stations and also to the "slave" cards in the system. This is achieved by wiring
this clock between cards (the clock does not transit via the back plane).
Each LDS slave card then transmits the clock to these base stations via the m-bit of the
S-frame.
LCAH-30521-001-05=01/EN
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