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San Leandro Commercial Broadband Strategy <br />Cable modem A device that hooks to your cable TV line to allow your <br />computer to receive data at about 1.5 Mbps. The theoretical <br />maximum for downstream transactions is 27 Mbps and 2.5 <br />Mbps upstream, but the connection is usually much slower <br />because the provider may be hooked to the Internet via a T -1 <br />line. <br />CDMA The type of digital cellular phone network used throughout most <br />of the United States, but rare elsewhere in the world. CDMA <br />stands for Code Division Multiple Access, and CDMA2000 lx <br />is the third- generation, or 3G, extension to which CDMA <br />cellular operators are upgrading their networks. It is a digital <br />cellular technology that uses spread - spectrum techniques. <br />Unlike competing systems, such as GSM, that use TDMA, <br />CDMA does not assign a specific frequency to each user. <br />Instead, every channel uses the full available spectrum. <br />Individual conversations are encoded with a pseudo- random <br />digital sequence. CDMA consistently provides better capacity <br />for voice and data communications than other commercial <br />mobile technologies, allowing more subscribers to connect at <br />any given time, and it is the common platform on which 3G <br />technologies are built. <br />Cell The geographic area covered by a cellular telephone transmitter. <br />A connected group of cells form a cell system, which is what <br />you gain access to when you sign up for cellular telephone <br />service. <br />Cellular A mobile communications system that uses a combination of <br />radio transmission and conventional telephone switching to <br />permit telephone communications to and from mobile users <br />within a specified area. <br />CLEC Competitive Local Exchange Carrier: Wireline service provider <br />that is authorized under state and Federal rules to compete with <br />ILECs to provide local telephone service. CLECs provide <br />telephone services in one of three ways or a combination <br />thereof: a) by building or rebuilding telecommunications <br />facilities of their own, b) by leasing capacity from another local <br />telephone company (typically an IL,EC) and reselling it, and c) <br />by leasing discreet parts of the ILEC network referred to as <br />UNEs. <br />16 July 2012 TellusVenture Associates Page 66 <br />