Wireless Digital 1xRTT - CDMA  Cell - Cellular modem

Wireless digital 1xRTT CDMA cell modem / and CDMA2000 cellular modems for data access solutions
820-850Mhz and 1.9Ghz Band - digital cellular modem Dual-band and Tri-band

bullet CDMA-1xRTT Cellular Modems -
he 1xRTT - CDMA2000 modes are used for packet-data communication -
the IS-95 circuit-switched data mode enables units to be used as if it
were a standard land-line modem

These cell modems are ideal for those "remote remote" sites where a phone line is impossible.

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With the cost cellular service declining a cell modem makes sense for Utility and Industrial applications.

Ayantra Dual band CDMA digital modem

Data Remote Digital CMDA modems 
Digital Tri-band CMDA data Cellular modem

Data Remote Digital CMDA 1xRTTmodems
Digital Tri-band CMDA 1xRTT data Cellular modem

Multitech Digital CDMA-1xRTT Cellular modem

Multitech Digital GSM/GPRS Cellular modem

StarPoint GSM-GPRS cellular modem

StarComm 1xRTT CDMA modem

Telenetics OMEGA-1 AC/DC powered 

Airlink CDPD
SLIP & PPP Cellular

jump to Cell modem terms Glossary

    Jump to Cellular Digital coverage map

   Jump to CDPD coverage map   

  Jump to AMPS and Digital  coverage map

   Jump to PDF file on 3G 

   Jump to 2G-3G Cellular Wireless 
data transport terminology

  Jump to What is CDMA

  Jump to What is MNP-10EC 

  Jump to What is Throughput X-Cellerator TX-Cel 

 Here are some links of interest:

The CDMA Development Group
(The Industry body for CDMA)

Wireless PCS Antenna and Tower Sitings
a bit dated now, but very interesting discussion of cell issues)

CDMA Online (contains an enormous amount of information about how CDMA works)

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What is CDPD

CDPD (Cellular Digital Packet Data) is a specification for supporting wireless access to the Internet and other public packet-switched networks. Cellular telephone and modem providers that offer CDPD support make it possible for mobile users to get access to the Internet at up to 19.2 Kbps . Because CDPD is an open specification that adheres to the layered structure of the Open Systems Interconnection (OSI) model, it has the ability to be extended in the future. CDPD supports both the Internet's IP protocol and the ISO Connectionless Network Protocol (CLNP).

CDPD also supports IP multicast (one-to-many) service. With multicast, a company can periodically broadcast company updates to sales and service people on the road or a news subscription service can transmit its issues as they are published. It will also support the next level of IP, IPv6.

For the mobile user, CDPD's support for packet-switching means that a persistent link isn't needed. The same broadcast channel can be shared among a number of users at the same time. The user's modem recognizes the packets intended for its user. As data such as e-mail arrives, it is forwarded immediately to the user without a circuit connection having to be established. There is a circuit-switched version, called CS CDPD, that can be used where traffic is expected to be heavy enough to warrant a dedicated connection.

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e-mail experts@dceexpress.com