Avaya DECT R4 Installation And Administration Manual page 165

A solution may be to use separate synchronization regions for the buildings and have reference
synchronization between the regions. Each region has its own Sync Master but can take
reference sync from another region and handover between the buildings is possible. If a region
should lose the reference synchronization with another region, the internal synchronization in
respective region will still work but there can be no handover between the regions.
Note:
For the synchronization to work, it is not allowed to configure reference sync in a
Note:
ring.
Configuring Sync Slave IPBS
All base stations in sync slave mode sends its list of sync candidates to the PARI Master. The
PARI Master informs the IPBS sync slave with which sync candidate it shall synchronize.
In addition to the above automatic synchronization procedure, it is also possible to use static
synchronization, that is, manually lock on to a specific RFPI. However when specifying a
specific RFPI the RFPI must be within the same synchronization region.
Configure Sync Slave as follows:
1. Select DECT > Air Sync.
2. Select Slave in the Sync Mode drop-down list.
3. For static air synchronization (if required), manually lock the sync slave to a specific RFPI
by entering the sync RFPI in the Sync RFPI field.
4. Enter an alternative sync RFPI in the Alternative Sync RFPI field (optional).
5. Enter a region ID between 0 and 63 in the Sync Region field.
Note:
An empty Synch Region parameter is equal to synch region 0.
Note:
6. Click OK.
Configuring Sync Master IPBS
Radios configured as Sync Master report to the PARI Master that it wants to be a Sync Master.
The PARI Master then selects one of them to be the active Sync Master.
When a Sync Master has been assigned to be active, it searches for other IPBSs/IPBLs within
the same region during 30 seconds. If any IPBS is found, the values for slot, frame, multi frame
and PSCN are received and applied to the Sync Master. After receiving all these values or after
the time-out of 30 seconds, the Sync Master enters the master state.
With this method, it is possible to restart only the Master in the region. The remaining slaves can
maintain synchronization for a few minutes during restart of the Master. The Master adjusts
itself to the other IPBSs at startup. The slaves notice that the Master is back and the
synchronization is received from the Master.
In master state, the values are updated locally during all further operation of the Master IPBS
and no synchronization to other IPBSs in the same region is done.
Avaya DECT R4 - Installation and Maintenance Guide
Operation
165
02/2016