Orion: data services for converged networks

What is UMTS?
Universal Mobile Telecommunications Service: The European implementation of the 3G wireless phone system. It is a packet-based transmission of text, digitised voice, video, and multimedia at data rates up to 1,920kbps. UMTS offers a consistent set of services to mobile computer and phone users, no matter where they are located.
UMTS has evolved from its basic format through developments such as High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA) to provide very high bandwidth capabilities to support the next generation of telecommunication services. UMTS can be connected to various backbone networks like the Internet, ISDN, GSM or to a UMTS network.

What is GPRS?
General packet radio service (GPRS) is a packet oriented mobile data service available to users of the second generation (2G) cellular communication systems global system for mobile communications (GSM), as well as in the third generation (3G) systems. In 2G systems, GPRS provides data rates of 56-114kbps.
It is often described as 2.5G—that is, a technology between 2G and 3G. It achieves its moderate-speed data transfer by using unused TDMA channels in the GSM network.