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CDMA-2000 1xRTT is a 3G wireless technology based on the CDMA platform. The 1x in 1xRTT refers to 1x the number of 1.25MHz channels. The RTT in 1xRTT stands for Radio Transmission Technology.

The CDMA-2000 1xRTT protocol was developed by Qualcomm.

CDMA-2000 1xRTT is a CDMA version of the IMT-2000 standard which was developed by the International Telecommunication Union (ITU).

Verizon and Sprint both operate CDMA-2000 1xRTT services in the United States.

CDMA-2000 1xRTT Specifications
Fixed/Mobile.............Mobile
Circuit/Packet...........Packet
Max Bandwidth.........144Kb
Range.......................Coverage area of host network
Frequency.................Frequency of host network
Host Network...........CDMA
Definer.....................CDG (CDMA Development Group)


Finding CDMA-2000 1xRTT Capable Hardware

A directory of CDMA-2000 1xRTT devices is available at the CDG web site.

CDMA-200 1xRTT By Any Other Name

CDMA-2000 1xRTT is also referred to as 3G1X and IMT-CDMA Multi-Carrier. CDMA-2000 1xRTT is also part of the IS-2000 CDMA standard.

The Next Generation of CDMA-2000 1xRTT

A planned enhancement to 1xRTT, 1xRTT Release A, will double data rates to 288 Kb. Another enhancement to 1xRTT, 3xRTT, is in development.