- packet switched data networks
- (PSDN)A network designed to carry data in the form of packets.
IT glossary of terms, acronyms and abbreviations. Faulkner Information Services . 2015.
packet switched data networks
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Packet 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… … Wikipedia
packet-switched network — A network that consists of a series of interconnected circuits that route individual packets of data over one of several routes, offering flexibility and high reliability. A packet switched network may also be called connectionless because… … Dictionary of networking
High-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… … Wikipedia
Switched multimegabit data service — (SMDS) is a telecommunications service that provides connectionless, high performance, packet switched data transport. Being neither a protocol nor a technology, it supports standard protocols and communications interfaces using current (and… … Wikipedia
Circuit 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… … Wikipedia
Retransmission (data networks) — Retransmission is the resending of packets which have been either damaged or lost. It is a term that refers to one of the basic mechanisms used by protocols operating over a packet switched computer network to provide reliable communication (such … Wikipedia
Switched multimegabit data services — In telecommunication, a switched multimegabit data services (SMDS) is a connectionless, broadband, packet switched data service that provides LAN like performance and features in metropolitan or wide areas. Currently SMDS operates at 1.544 Mbit/s … Wikipedia
Packet switching — is a digital networking communications method that groups all transmitted data – regardless of content, type, or structure – into suitably sized blocks, called packets. Packet switching features delivery of variable bit rate data streams… … Wikipedia
Protocol data unit — In telecommunications, the term protocol data unit (PDU) has the following meanings: #Information that is delivered as a unit among peer entities of a network and that may contain control information, address information, or data. #In layered… … Wikipedia
Packet telephony — is the use of personal computers and a packet data network to produce a voice conversation. It consists of telephony and data tightly coupled on packet based switched multimedia networks.The goal of packet switched fabric in both LAN and WAN, the … Wikipedia
