telephony communication between subscribers
91Public switched telephone network — The public switched telephone network (PSTN) is the network of the world s public circuit switched telephone networks. It consists of telephone lines, fiber optic cables, microwave transmission links, cellular networks, communications satellites …
92Phone fraud — Whether in the form of the consumer attempting to defraud the telephone company, the telephone company attempting to defraud the consumer, or a third party attempting to defraud either of them, fraud has been a part of the telephone system almost …
93GPRS Core Network — The GPRS core network is the central part of the General Packet Radio Service which allows 2G, 3G and WCDMA mobile networks to transmit IP packets to external networks such as the Internet. The GPRS system is an integrated part of the GSM network …
94Citycell — (Pacific Bangladesh Telecom Limited) Type Limited Industry Telecommunication Founded 1989 …
95Comparison of mobile phone standards — A comparison of mobile phone standards can be done in many ways. Contents 1 Issues 2 Comparison table 3 Traceability comparison 4 Strengths and Weaknesses of IS 95 and GSM[4] …
96Universal Mobile Telecommunications System — (UMTS) is one of the third generation (3G) cell phone technologies, which is also being developed into a 4G technology. Currently, the most common form of UMTS uses W CDMA as the underlying air interface. It is standardized by the 3GPP, and is… …
97Mobile banking — Part of a series on Electronic commerce Online goods and services Streaming media Electronic books Softw …
98Network effect — Diagram showing the network effect in a few simple phone networks. The lines represent potential calls between phones. In economics and business, a network effect (also called network externality or demand side economies of scale) is the effect… …
99Android (operating system) — Android …
100AT&T Corporation — For the 2005 parent company currently known as AT T and formerly Southwestern Bell/ SBC, see AT T. AT T Corp. Type Subsidiary Industry …
