User's Manual

SME VoIP System Guide, Version 1.5
Proprietary and Confidential
Chapter: Introduction – System Overview
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2 Introduction – System Overview
In a typical telephony system, the network setup is the interconnection between Base-stations, “fat”
routers, repeaters, portable parts, etc. The back-bone of the network depends on the deployment scenario
but a ring or hub topology is used. The network has centralized monitoring, and maintenance system.
The system is easy to scale up and supports from 1 to 40 bases in the same network. Further it is able to
support up to 200 registered handsets. The Small and Medium Scale Enterprise (SME) VoIP system setup is
illustrated below. Based on PoE interface each base station is easy to install without additional wires other
than the LAN cable. The system supports the next generation IP DECT CAT-IQ repeater with support up to 5
channels simultaneous call sessions.
The following figure gives a graphical overview of the architecture of the SME VoIP System:
2.1 Hardware Setup
SME network hardware setup can deployed as follows:
Base-station(s) are connected via Layer 3 and/or VLAN Aware Router depending on the deployment
requirements. The Layer 3 router implements the switching function.
The base-stations are mounted on walls or lamp poles so that each base-station is separated from each
other by up to 50m indoor (300m outdoor). Radio coverage can extended to 400m using repeaters that are
installed up to 300m from the base-station(s).
The base-station antenna mechanism is based on space diversity feature which improves coverage. The
base-stations uses complete DECT MAC protocol layer and IP media stream audio encoding feature to
provide up to 10 simultaneous calls.