User`s guide

6 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1

The Access Point is positioned at a location from which it can commu-

nicate with all of the Remote units in the system. Commonly, this is a

high location on top of a building or communications tower. Messages

are exchanged at the Ethernet level. This includes all types of IP traffic.

A Remote transceiver can only talk over-the-air to an Access Point unit

(AP). Peer-to-peer communications between Remotes can only take

place indirectly via the AP. In the same fashion, an AP can only talk

over-the-air to associated Remote units. Exception: Two APs can com-

municate with each other “off-the-air” through their Ethernet connectors

using a common LAN/WAN.

Invisible place holder

Figure 1-2. Typical Wireless LAN

1.2.2 Point-to-Point LAN Extension

A point-to-point configuration (Figure 1-3) is a simple arrangement

consisting of an Access Point and a Remote unit. This provides a com-

munications link for the transfer of data between two locations.

Invisible place holder

Figure 1-3. Typical Point-to-Point Link

1.2.3 Backhaul for Serial Radio Networks

One of the primary design features of the transceiver is to provide a path

for serial devices to migrate to IP/Ethernet. Many radio networks in

operation today still rely on serial networks at data rates of 9600 bps or

less. These networks can use the transceiver as a means to continue

using the serial service, while allowing the rest of the infrastructure to

migrate to an IP format.

Remote

Access Point

Remote

LAN

WAN/LAN

LAN

LAN/WAN

Access Point

Remote

LAN