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Smds - switched multimegabit data service
| Telecommunications Glossary |
A public network service that will enable customers to send packets between lans at either t-1 or t-3 rates. switched multimegabit data service is offered by public network providers and is a connectionless (i.e., datagram) service. it will enable customers to exchange packets between sites at t1, t3 at potentially higher rates. this lan-like service will be offered by local exchange carriers and will initially be available only within selected metropolitan areas. a typical smda customer will have a wide-area communications device - i.e., a router - connected to a campus lan or backbone, which interface through a subscriber line to the local telco central office. the communication between the customer premises device (e.g., the router) and the telco will adhere to a protocol called subscriber interface protocol (sip). this protocol has three levels, only two of which are standardized levels 1 and 2 are fashioned from the ieee 802.6 mac standard for metropolitan area networking, which is called the distributed queued dual bus (dqdb) protocol. the third layer was promulgated by bellcore in one of its technical advisories. the smds service will support both t1 and t3 access from the user`s router to the local exchange carrier`s central office. smds is considered by the regional bell operating companies (rbocs) to be their first broadband service, and it will eventually be incorporate as a service offering for broadband isdn (bisdn) family of services in the late 1990s.
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Connectionless, английский
- Без организации соединения
- Без организации соединения; не ориентированный на установление соединения connectionless best-effort data delivery service наилучший сервис доставки данных, не ориентированный на установление соединения
Metropolitan, английский
Относящийся к столице или крупному городу
Communications, английский
- Средства связи; связь 158
- Средства связи; связь
- [1] general: the transfer of information according to agreed conventions. [2] information technology; the representation, transfer, interpretation, and processing of data between and
- Связь; система связи; коммуникации; пути сообщения
Subscriber, английский
- A user of wireless service bought from a service provider.
- A mobile user who has selected specific subscriptions for his/her mobile device.
- A person who has indicated his or her desire to be on a mailing list.
- In notification services, the person or process to which notifications are delivered.
- In replication, a database instance that receives replicated data.
- A person who contracts for publicly available telecommunications services.
Communication, английский
- Связь; связной
- (кан.) решение экспертизы
- N коммуни- кация; процесс передачи информации; mis~ недопонимание, непонимание | attr. комму- никативный disorder, impairment, strategy cross-cultural (intercultural) ~ межкультурная коммуникация non-verbal ~ невербальная, неречевая комму- никация verbal ~ вербальная, речевая коммуникация
- Передача (распространение) информации процесс информирования населения.
- Corresponding by letter, hail, or signal. (see line of communication and boyaux.)
- Loosely, the transmission of structure across systems differentiated in time and in space, the process by which one mind affects another, interaction mediated by signals, symbols or messages. more formally and in cybernetics, communication is that construct an observer requires when he cannot take a dynamic system apart without loss (->ana~ysis), yet wants to distinguish, understand and say something about that system`s parts, variables or members, or alternatively, when he wants to explain the behavior of anyone of its parts yet cannot accomplish this adequately without reference to other parts of the system. communication ~s what integrates and distinguishes the participation of individuals in such wholes as groups, communities, societies. a more detailed analysis of communication processes reveals that they involve patterns that convey information, are subjected to numerous constraints and are describable in terms of transformations, including encoding, decoding, (->coding), transmission, and distortions due to the characteristics of a channel. historically, communication. was thought of as a binary relation between a sender and a receiver. modern conceptions of communication include complex networks possibly with feedback loops having the effect of memory, coordination, and coorientation and exhibiting dynamic properties not manifest in, and explainable by, reference to the properties of the.communicators involved (->constructivism). communications (plural
Standardized, английский
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Smpte time code, английский
Society of motion picture and television engineers` system of giving each frame of video a number to allow indexing and precise tape control. ebu time code is the european broadcast union version of smpte time code.
Slip - serial line internet protocol, английский
Slip is currently a de facto standard, commonly used for point-to-point serial connections running tcp/ip. it is not an internet standard but is defined in rfc 1055.
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