 64Kbps to 384Kbps, depending on the standard and the technology. 23B+D The North American and Japanese infrastructure for PRI, which provides 23 64Kbps B-channels for information and 1 64Kbps D-channel for signaling and additional packet data. 3DES (Triple DES) A 168-bit encryption technique that uses three 56-bit keys. 3DES applies the DES algorithm to a plaintext block three times. 3G (third-generation) wireless The third generation of wireless communication, which includes digital transmission; it also permits per-user and terminal mobility by providing a single mobile communication service, adjusted for broadband applications (including voice, data, and multimedia streams), that will support higher data speeds, 2Mbps, with the objective of ulti- mately supporting up to 155Mbps. 3.5G (3.5-generation) wireless An intermediate third generation of wireless technology after 3G, which is introducing enhancements designed for services running over an IP backbone, including high-speed data and video. Key 3.5G standards include HSDPA, HSUPA, and HSOPA. 3.5G will offer data speeds up to 10Mbps and possibly up to 20Mbps. 3GPP (3G Partnership Project) A group formed in 1998, under the ETSI, to make a glo- bally applicable 3G mobile phone system specification within the scope of the ITU's IMT-2000 project. 3GPP2 (3G Partnership Project 2) A group formed when ETSI refused to expand the scope of 3GPP to address CDMA2000. ANSI formed 3GPP2 to coordinate CDMA2000 developments. 30B+D The ITU infrastructure for PRI, which provides 30 64Kbps B-channels and 1 64Kbps D-channel. 4G (fourth-generation) wireless The fourth generation of wireless communication, which will support a wide range of data rates, promising a maximum of 50Mbps to 100Mbps while moving and an average of 20Mbps and up to 1Gbps while standing still. The two key tech- nologies involved with 4G are OFDM and MIMO. 5G (fifth-generation) wireless The fifth generation of wireless communication, which will enable fast downloads of large chunks of data across the Inter