User's Manual

SME VoIP System Guide, Version 1.5
Proprietary and Confidential
Chapter: Introduction – System Overview
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2.2 Components of SME VoIP System
RTX SME VoIP system is made up of (but not limited to) the following components:
• At least one RTX Base Station is connected over an IP network and using DECT as air-core interface.
• RTX IP DECT wireless Handset.
• RTX SME VoIP Configuration Interface; is a management interface for SME VoIP Wireless Solution. It
runs on all IP DECT Base stations. Each Base station has its own unique settings.
• Other 3rd party vendor products which will be described in details in Chapter 8
2.2.1 RTX Base Stations
The Base Station converts IP protocol to DECT protocol and transmits the traffic to and from the end-nodes
(i.e. wireless handsets) over a channel. It has 12 available channels.
In a multi-cell setup, each base station has:
• 8 channels have associated DSP resources for media streams.
• The remaining 4 channels are reserved for control signalling between IP Base Stations and the SIP/DECT
end nodes (or phones).
Base Stations are grouped into clusters. Within each Cluster, Base Stations are synchronized to enable a
seamless handover when a user moves from one base station coverage to another. For synchronization
purposes, it is not necessary for Base Stations to communicate directly with each other in the system. E.g. a
Base Station may only need to communicate with the next in the chain. It is advisable for a Base Station to
identify more than one Base Station to guarantee synchronization in the situation that one of the Base
Stations fails.
The 4 control signalling channels are used to carry bearer signals that enable a handset to initiate a
handover process.
2.2.2 SME VoIP Administration Server/Software
This server is referred to as SME VoIP Configuration Interface.
The SME VoIP Configuration Interface is a web based administration page used for configuration and
programming of the base station and relevant network end-nodes. E.g. handsets can be registered or de-
registered from the system using this interface.
The configuration interface can be used as a setup tool for software or firmware download to base stations,
repeaters and handsets. Further, It is used to check relevant system logs that can be useful to