circuit switched data transmission service
1Circuit Switched Data — (CSD) is the original form of data transmission developed for the time division multiple access (TDMA) based mobile phone systems like Global System for Mobile Communications (GSM). CSD uses a single radio time slot to deliver 9.6 kbit/s data… …
2High-Speed Circuit-Switched Data — (HSCSD), is an enhancement to Circuit Switched Data, the original data transmission mechanism of the GSM mobile phone system, four times faster than GSM, with data rates up to 38.4 kbit/s.As with CSD, channel allocation is done in circuit… …
3Public data transmission service — In telecommunication, a public data transmission service is a data transmission service that is established and operated by a telecommunication administration, or a recognized private operating agency, and uses a public data network. Note: A… …
4Packet switched network — A Packet Switched Network, or PSN, refers to the packet switched networks that existed before the Internet. The history of such networks can be divided into three eras:early networks before the introduction of X.25 and OSI,the X.25 era when many… …
5General Packet Radio Service — (GPRS) is a packet oriented mobile data service on the 2G and 3G cellular communication system s global system for mobile communications (GSM). GPRS was originally standardized by European Telecommunications Standards Institute (ETSI) in response …
6Virtual circuit — In telecommunications and computer networks, a virtual circuit (VC), synonymous to virtual connection and virtual channel, is a connection oriented communication service that is delivered by means of packet mode communication. After a connection… …
7Public 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 …
8Enhanced Data Rates for GSM Evolution — Enhanced Data rates for Global Evolution (EDGE), Enhanced GPRS (EGPRS), or IMT Single Carrier (IMT SC) is a backwards compatible digital mobile phone technology that allows improved data transmission rates, as an extension on top of standard GSM …
9Evolution-Data Optimized — or Evolution Data only, abbreviated as EV DO or EVDO and often EV, is a telecommunications standard for the wireless transmission of data through radio signals, typically for broadband Internet access. It uses multiplexing techniques including… …
10Telecommunications data retention — In the field of telecommunications, data retention (or data preservation) generally refers to the storage of call detail records (CDRs) of telephony and internet traffic and transaction data (IPDRs) by governments and commercial organisations. In …
