User guide

TD 92422GB
18 February 2010 / Ver. E
System Planning
Ascom IP-DECT System
15
There is one Air Sync Master per building, hence the installation consists of three regions.
The regions are synchronized to each with a reference sync as follows:
The Air Sync Master in region 1 has been configured to receive a reference sync from one
IPBS in region 2 and the Air Sync Master in region 3 has been configured to receive a
reference sync from one IPBS in region 1. If region 1 should lose the synchronization with
region 2, the internal synchronization in region 1 will still work but there can be no
handover between region 1 and 2.
Note: For the synchronization to work, it is not allowed to configure reference sync in a
ring, i.e. the Air Sync Master in region 3 is not allowed to receive a reference sync from a
IPBS in region 2.
Note: Regions cannot be configured for IPBLs. The IPBLs will always belong to region 0.
Figure 4. Three buildings/regions synchronized using reference sync.
Radio
Air Sync
Master
Radio
Air Sync
Slave
Radio
Air Sync
Slave
Building
Region 1
reference sync
Radio
Air Sync
Master
Radio
Air Sync
Slave
Radio
Air Sync
Slave
Building
Region 2
Radio
Air Sync
Master
Radio
Air Sync
Slave
Radio
Air Sync
Slave
Building
Region 3
reference sync
It is not allowed to
configure reference
sync in a ring.