is particularly well-suited to mobile professionals because it offers a
high-speed, high-capacity, low-cost system with the greatest possible coverage.
Additionally, data is encrypted for greater security.
became a networking standard in the early 1990s, when a consortium of cellular
carriers across the United States came together for the purpose of creating a
method for sending data over cellular telephone channels. They wanted to provide
a cost-effective, reliable and flexible solution to providing two-way wireless
data communications service for mobile professionals.
how it works: During transmission across cellular telephone channels, there are
moments when the channel is idle. In fact, industry research indicates that over
30 percent of air time, even during heavy traffic, is unused. CDPD technology is
able to detect and use these otherwise wasted moments by packaging data in small
packets and sending it in short "bursts" during the idle time. As a
result, the cellular channel operates more efficiently, and voice and data
transmissions are unaffected. CDPD is based on the same communications protocol
as the Internet, so mobile users have access to the broadest range of
AirLink CDPD Raven
The Raven is a rugged, full duplex Cellular Digital Packet Data (CDPD) modem that provides wireless transport capabilities for fixed and mobile applications. The Raven is an efficient and secure wireless packet data technology that is ideal for un-tethered applications. CDPD is more cost effective than circuit-switched cellular data for small volumes of data. It provides instantaneous response for transaction processing because there are no dialing delays. Additionally, built-in encryption maintains the security of the application data over the air.
The CDPD Raven is ideally suited for all fixed and mobile Industrial and Commercial Applications, including Telemetry, SCADA, Public Safety, Dispatch, Field Service, Financial Transaction Processing, and Security. The Raven’s embedded TCP/IP stack enables virtually any type of remote device to access the CDPD network.
The Raven is currently installed with many different types of Remote Terminal Units (RTUs) which perform remote metering and monitoring functions in the oil, gas, and water industries. The CDPD Raven can be a low-cost replacement for existing landline, private radio and circuit-switched cellular installations.
The Raven is certified by numerous Public Safety application providers and is installed with many Police Departments throughout the US.
Standard interfaces include:
In addition, several protocol conversions (Modbus, Opto22, BSAP) have been implemented to allow hosts to communicate with RTUs over CDPD without modifying the host or remote software.
Custom Application Development
AirLink can customize the software in the Raven to include all or part of your application processing. In some cases, the entire application can reside inside the Raven. No additional processor is required.
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