Synchronization and Deployment Guide
Deployment of Base Stations
When the base station radios are synchronized via radio, the base stations that synchronize to
each other must be within radio coverage of each other. This is not required when LAN based
radio synchronization is used. Here the deployment requirements are the same as for the digital
base stations and the coverage overlap is only required for the handsets to be able to perform
handovers. The figure below illustrates the difference in coverage requirements for radio and LAN
based synchronization.
LAN synchronization
Radio synchronization
It should be noted that depending on the deployment - Synchronization via LAN and radio can
be combined in the same DECT installation. Even when a base station is configured to
synchronize via LAN, it transmits the signal required for synchronization via radio. Therefore,
base stations synchronizing via radio can retrieve their synchronization signal from a base
station synchronizing via LAN. The other way around is not possible.
Network Requirements
For PTPv2 to work the requirements for the network are quite strict with regard to multicast and
timing.
Note
LAN synchronization only works properly if multicast and timing requirements are met. As
assessment of the corporate LAN network MUST be done to evaluate if the LAN network is
suitable enough for LAN based synchronization.
14169000 Version 9.3
October, 2016
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