User manual

Chapter 3 Basic Settings Page 30
Wireless Settings
Open “Radio” in “Wireless” as below and select “RF1” or “RF2” to make a basic wireless configuration on
radio card 1 and 2.
Figure 18 Basic Wireless Settings
Operating Mode
Four operating modes are available on the SGT-LD-55-23. In a point to point environment where
there are only two radios, Peer-to-Peer is recommended as it works more efficiently.
Base Station: The SGT-LD-55-23 connects directly to the main Ethernet LAN and receives
connectivity from other wireless devices.
CPE: The SGT-LD-55-23 connects to a remote LAN and the Base Station in it.
Peer-to-Peer (CSMA): The SGT-LD-55-23 connects to another wireless device within the same
networking area using the CSMA protocol. CSMA ensures that only one node is transmitting on the
network at any one time. In this mode, both PTP and PTMP are available. It is highly
recommended to use this mode when the distance between two nodes is less than 20Km.
Peer-to-Peer (TDMA): The SGT-LD-55-23 connects to another wireless device within the same
networking area using the TDMA protocol. TDMA divides each cellular channel into multiple time
slots to increase the amount of data that can be carried, hence increase the throughput. In this
mode, only PTP is available and it is suggested to use this mode when the distance between the two
SGT-LD-55-23‟s is greater than 20KM. To make the P2P TDMA work, you need to set the same
Group ID on both peers.