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Communication Standards Communication Standards Network Type Description Frequency Max Data Rate URL TDMA (Time Division Multiple Access)  Cellular, circuit switched protocol for digital satellite or cellular communication (primarily voice).  Cellular, satellite circuit switched protocol for cellular communication (primarily voice).   800 and 1900 MHz   14.4 Kbps  http://www.webproforum.com/tdma/index.html   GSM (Global System for Mobile Communications)  Circuit Switched WAN  Circuit switched protocol for cellular communication (primarily voice) -- defacto standard in Europe.  varies  9.2 Kbps  http://www.gsmworld.com/   AMPS  Circuit Switched WAN  Standard U.S. cellular telephone network.  800 MHz  varies  http://www.ericsson.com   GPRS (General Packet Radio Service)  Circuit Switched WAN with Packet Based Overlay  Data overlay system for enhancing existing GSM (Global System for Mobile Communications) and/or other TDMA-based networks … considered 2.5 generation.  varies  171 Kbps (theoretical)  http://www.gsmworld.com/   CDMA (95B)  Packet Switched WAN  Second generation CDMA technology.  800, 1800, and 1900 MHz  64 Kbps has been implemented.  http://www.cdg.org/frame_tech.html   CDMA--95A (Code Division Multiple Access)  Packet Switched WAN  Packet based protocol for digital satellite or cellular communication (primarily voice).  800 and 1900 MHz   14.4 Kbps  http://www.cdg.org/frame_tech.html   CDPD (Cellular Digital Packet Data)  Packet Switched WAN  Used in regional networks -- packet-based, can share cellular spectrum with voice.   800 MHz  19.2 Kbps  http://cdpd.org/cdpd/   ERMES (The European Radio Messaging System)  Paging  Currently used in Europe -- possible expansion of use.  169.4 - 169.8 MHz    http://www.etsi.org/brochures/stateart/lax.htm   POCSAG  Paging  Older standard -- supports tone only, numeric and text pagers.  138 - 177 single frequency and 278 - 286 MHz single frequency or synthesized.  1200 bps    FLEX  Paging  Designed for one-way, high-speed data messaging -- builds on POCSAG. Supports 600, 000 numeric pagers per channel.   25 kHz   6400 bps  http://www.motorola.com/MIMS/MSPG/FLEX/   REFLEX  Paging  Two-way extension of FLEX -- designed for two-way, high-speed data messaging.  25 or 50 kHz   Inbound Max: 9600 bps Outbound Max: 6400 bps  http://www.motorola.com/MIMS/MSPG/FLEX/   InFLEXion  Paging  Extension of FLEX -- designed for mixed-mode analog voice and data communications as well as two-way messaging.  50 kHz outbound and 12.5 kHz inbound   112 Kbps  http://www.motorola.com/MIMS/MSPG/FLEX/   802.11 DS  Wireless LAN  Initial standard -- used for connection of fixed or portable stations in a LAN.  2.4 GHz  2 Mbps  http://www.manta.ieee.org/groups/802/11/main.html   802.11 FH  Wireless LAN  Initial standard -- used for connection of fixed or portable stations in a LAN.  2.4 GHz  2 Mbps  http://www.manta.ieee.org/groups/802/11/main.html   802.11 IR  Wireless LAN  Initial standard -- used for connection of fixed or portable stations in a LAN.  Infrared  2 Mbps  http://www.manta.ieee.org/groups/802/11/main.html   802.11a   Wireless LAN  802.11 supplemental standard -- increased performance and range for LAN connections.  5.8 GHz  40 Mbps  http://www.manta.ieee.org/groups/802/11/main.html   802.11b HR DS  Wireless LAN  802.11 supplemental standard -- increased performance and range for LAN connections.  2.4 GHz  11 Mbps  http://www.manta.ieee.org/groups/802/11/main.html   HiperLAN I  Wireless LAN  European Standard -- designed for high-speed radio frequency connections between portable devices.  5.2 GHz  23.5 Mbps  http://www.etsi.org   OpenAir  Wireless LAN  Designed to provide radio frequency connection for mobile wireless LAN applications -- includes long range capabilities.  2.4 GHz  1.6 Mbps  http://www.proxim.com/wireless/standards/interop.shtml   Shared Wireless Access Protocol (SWAP)  Wireless LAN  Used primarily for small office and home office networking -- carries voice as well as data transmissions.  2.4 GHz  2 Mbps  http://www.homerf.org   Proprietary  Wireless LAN   Device- or application-specific wireless LAN protocols.   Varies  Varies  http://grouper.ieee.org/groups/802/11/index.html   Blue Tooth  Wireless PAN  Personal Area Network standard -- primarily for interconnecting consumer devices.  2.4 GHz  1 Mbps  http://www.bluetooth.com   IRDA  Wireless PAN  Provides infrared connections between communication devices such as mobile phones, desktop PCs and notebook computers -- both voice and data are transferred in real time.   Infrared  115,400 Kbps  http://www.irda.org

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