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E Series Ethernet Radio – User Manual
Part C – Applications
Introduction
Fundamental to understanding the use of E Series Ethernet Radios in your system is the need for a basic understanding of the different types of
radio network topologies (known as NETWORK TYPES) and the function of each radio within them (known as RADIO TYPES).
The following table provides a brief overview of each:
Network Types:
Point to Point (PTP): One Access Point radio is configured to communicate with a REMOTE radio in PTP mode.
Point to Point via Bridge (PTP/B): As per PTP mode but with additional network range extension using a Bridge.
Point to Multipoint (PTMP): One Access Point radio is configured to communicate with multiple REMOTE radio(s) a PTMP network
Radio Types:
Access Point: Defines the Access Point radio in a network. The function of the Access Point is to manage Bridges and remotes beneath it.
There must be one and only one Access Point Per radio network.
Remote: A remote radio in the network. The function of a remote is to communication with the Access Point either directly or via one or more
Bridges.
Bridge: A radio that provides network extension between an Access Point or another BRIDGE and additional REMOTES. A BRIDGE is a device
that essentially performs a store and forward function, the only difference being that when a message is received from upstream, it will be
forwarded downstream and vice versa.
Each type of network is described in the following diagrams.
Point-to-Point Networks (PTP)
A Point to Point (PTP) network has one Access Point and one remote radio. Normally full duplex radios are installed, providing full data throughput
in each direction. Alternatively, half-duplex radios can also be implemented although collision avoidance must be enabled.
Full Duplex radios have the advantage that they simulate a cable connection with respect to the connected device. Even if one device transmits
continuously it will not block the other device from sending data. This is useful for applications that expect full duplex communications or that are not
designated to be radio modem friendly.
Part C – Network Types
