Avaya DECT R4 Installation And Administration Manual page 27

Each IP-DECT Master must be assigned an unique master identity to update the IP-PBX with
correct information about the handset's location when it is roaming between different sites. See
the following example for more information.
Example:
The identity for each IP-DECT Master is set according to the table below.
Site
Site 1
Site 2
A handset being on Site 1 and Master 1 has indicated to the IP-PBX that Master 1 shall be used
for incoming calls to the handset. When the handset is entering Site 2, the LDAP database will
be updated with the new location of the handset, in this case, Master 2 shall be used for
incoming calls to the handset.
Standby Devices
It is recommended to have Standby devices in an IP-DECT system. When a Master goes down
the corresponding Standby Master takes over.
Mirror Devices
For redundancy purposes, the Master can act in two ways: As Standby Master and Mirror.
However, there are some limitations when using Standby Masters and in these cases using
Mirror Masters can be a solution.
Avaya DECT R4 - System Description
radio radio
Figure 5. An IP-DECT system with a Standby Master.
IP-DECT Master ID
1
2
IP-PBX IP-PBX
master standby master
radio radio
IP-DECT System
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