ng WCDMA and 802.15.4 LTE networks. European, Asian, and North The IEEE standards upon which the ZigBee American telecommunications standards bod- Alliance tests and certifies equipment, and ies formed the 3GPP. adds functions to sensor networks. Glossary 802.20 the costs that local phone companies incur A set of IEEE standards for wireless technol- in providing links to local customers, but ogy based on OFDM. Flarion, which is part they have been decreasing, and residential of Qualcomm, builds 802.20 equipment. and business customers are paying some of these costs in the form of monthly charges 8YY toll-free numbers called Subscriber Line Charges (SLCs). An abbreviation describing the format of the VoIP traffic is exempt from access fees. North American Numbering Plan for toll- free numbers. The first three digits of toll- ACD (Automatic Call Distribution) free telephone numbers must be the number Equipment and software that distribute calls 8 followed by 0 or 2 through 9 for the sec- to agents, based on parameters such as the ond and third digits. When central office switches see the 8YY format, they request a agent who has been idle the longest. ACDs database check to determine where the toll- are part of telephone systems or adjuncts to free number should be routed. telephone systems. ACDs are also referred to as contact centers. See also contact adaptive bit rate streaming centers. The ability of equipment (encoders) used to stream video and multimedia content ANI (Automatic Number from the Internet to computers and mobile Identification) devices to adjust the bit rate dynamically to The business or residential customer's bill- the user's processing capabilities and band- ing number. Customers such as call centers width availability. pay for callers' ANIs to be sent to them simultaneously with incoming 800 and 888 ASCII (American Standard Code for and other toll-free calls. Information Interchange) The main 7-bit code personal computers use APs (Access Points) to translate bits into meaningful language. Thes