User's Manual

SME VoIP System Guide, Version 1.5
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Chapter: Deployment Mechanics – Multi-cell SME Network
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Case ##2: Synchronisation Chain without Alternative Sync Paths
a) Assuming Master Sync source is Base station ##39. A maximum of 40 base stations can be deployed in
one setup (depending on the network requirement not all base stations should be chained).
b) A maximum of 7 devices can be chained at one time.
c) Depending on the system setup, it is recommended to place the Sync source Master in the middle of
the building and to assign numbers/addresses, radio ID (RPN), etc., to each base station or repeater for
easy identification.
 Continuous line: Shows the primary sync paths, with the relevant bases chained in the multi-cell
network.
 Dotted line: Alternative sync paths, but cannot be used because the relevant base stations have
not been chained.
Case ##3: Synchronisation Chain with Alternative Sync Paths
The illustration below shows a multi-cell network with alternative Synchronisation paths. A failure of one
base unit does not mean handset or users cannot perform handovers to other active cells.
BS#39 is the SYNC Master, if BS#05 is down, most user handovers can be formed via 3 other alternative
cells (i.e. BS#06, BS#02 and BS#04) without any problems at all.
Furthermore observe the following:
 BS#04 and BS#01 are Primary with alternative sync to BS#39.
 BS#05 is primary sync to BS#04 while alternative sync is BS#01 or BS#02
 BS#03 is primary sync to BS#02 while alternative sync is BS#05 or BS#06.