User's Manual

July 23, 2002 2-16
CreataLink2 XT Hardware Integrator’s Guide General
Air Interface
Air Interface
Data transport between the host application and the network requires data ex-
change protocols. In the radio portion of the network, between the data transceiver
and the base station, specialized RF protocols carry the data. These radio protocols
are typically transparent in wireless applications. The FLEXsuite of application
protocols must be used to transport data between applications on either side of
network. FLEXsuite is available from Motorola, Inc. via a license agreement.
Air Interface Protocol
The data transceiver communicates across radio frequency channels via the Re-
FLEX protocol and an internal 900 MHz radio to operate across the 12.5 kHz
(ReFLEX 25) or 10 kHz (ReFLEX 50) RF sub-channels in the 900 MHz band. The
network-specific configuration is constant for all like data transceivers on the
network, and includes the network ID, channel list, base frame, and home control
channel.
On ReFLEX networks, the data transceiver automatically scans available channels
to locate an area channel that supports reliable communications. The data trans-
ceiver then performs a registration on the channel to establish a connection with
the network. The registration process can be disabled via codeplug configuration
for fixed location applications. The default configuration is Registration Off
(always considered registered). A data transceiver operating in a typical network,
integrated into a product, is shown in
Figure 2-7. For more details on network
operation, contact your network operator (paging carrier).
990007
Figure 2-7. Network Routing
Base Transmitter
or Base Receiver
Base Transmitter
or Base Receiver
Vending Machine
with Integrated
Data Transceiver
Host Product
with Integrated
Data Transceiver
Network
Controller
Application
Host or Server
807SRH-02
(Specific Example)
(Generic Example)