Planning and Installation Guide Mitel SIP-DECT Multi-Cell for MiVoice Connect
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The sync-over-air solution is very reliable because all existing redundant paths are
used for synchronization. Thus, hardware tolerances have only very little influence. No
DECT base station has a key position. Only unfavorable setups without redundant
synchronization paths can cause problems.
Sometimes DECT base stations do not need to be synchronized (for example, if they
are in different buildings). These DECT base stations can be put into different clusters.
DECT base stations in different clusters are not synchronized with each other. Different
clusters start up at the same time independently.
To avoid synchronization problems and to speed up the synchronization on system
startup, an initial synchronization procedure is used. For every cluster the following
synchronization stages are defined.
• Synchronization stage 0:
o If at least one preferred DECT base station was configured, the
synchronization process waits up to 30 seconds for an incoming startup
message of such a preferred DECT base station. Receiving a message will
finishing stage 0 and the synchronization process jumps to stage 1.
o If no message is received within 30 seconds, this stage will be terminated and
the next stage begins.
o If no preferred DECT base station was configured, this stage is ignored.
• Synchronization stage 1
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