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Base
station
Base
station
Coverage area
Base
station
6/1531-ANF 901 14 Uen F1 2013-11-29
Coverage area
Base
station
Ring Synchronization
cabling
Figure 4: A synchronization ring is needed between the first board in
all media gateways (the rest of the boards in mgw get sync
from backplane) to achieve external hand over between
those base stations which are connected to different boards.
Base
station
Figure 5: A synchronization ring is not needed between the boards
when there is no radio coverage between them.
server 1
mgw 1B
mgw 1A
server 2
mgw 2B
mgw 2A
Optional
Server 1
MGW B
MGW A
Ring Synchronization
cabling
P
REPARATIONS
Optional
Base
station
Coverage area
Server 2
MGW B
MGW A
15
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