Out-of-band agreement
Encyclopedia
In the exchange of information
over a communications
channel
, an
out-of-band agreement is an agreement or understanding between
the communicating parties that is not included in any message
sent
over the channel but which is relevant for the interpretation of such
messages.
By extension, in a client–server or provider
-requester setting, an
out-of-band agreement is an agreement or understanding that
governs the semantics
of the request/response interface but which is
not part of the formal or contractual description of the interface
specification itself.
Information
Information in its most restricted technical sense is a message or collection of messages that consists of an ordered sequence of symbols, or it is the meaning that can be interpreted from such a message or collection of messages. Information can be recorded or transmitted. It can be recorded as...
over a communications
Telecommunication
Telecommunication is the transmission of information over significant distances to communicate. In earlier times, telecommunications involved the use of visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs, or audio messages via coded...
channel
Channel (communications)
In telecommunications and computer networking, a communication channel, or channel, refers either to a physical transmission medium such as a wire, or to a logical connection over a multiplexed medium such as a radio channel...
, an
out-of-band agreement is an agreement or understanding between
the communicating parties that is not included in any message
Message
A message in its most general meaning is an object of communication. It is a vessel which provides information. Yet, it can also be this information. Therefore, its meaning is dependent upon the context in which it is used; the term may apply to both the information and its form...
sent
over the channel but which is relevant for the interpretation of such
messages.
By extension, in a client–server or provider
Service provider
A service provider is an entity that provides services to other entities. Usually, this refers to a business that provides subscription or web service to other businesses or individuals. Examples of these services include Internet access, Mobile phone operators, and web application hosting...
-requester setting, an
out-of-band agreement is an agreement or understanding that
governs the semantics
Semantics
Semantics is the study of meaning. It focuses on the relation between signifiers, such as words, phrases, signs and symbols, and what they stand for, their denotata....
of the request/response interface but which is
not part of the formal or contractual description of the interface
specification itself.
External links
See also
- APIApplication programming interfaceAn application programming interface is a source code based specification intended to be used as an interface by software components to communicate with each other...
- ContractContractA contract is an agreement entered into by two parties or more with the intention of creating a legal obligation, which may have elements in writing. Contracts can be made orally. The remedy for breach of contract can be "damages" or compensation of money. In equity, the remedy can be specific...
- Out-of-bandOut-of-bandThe term out-of-band has different uses in communications and telecommunication. In case of out-of-band control signaling, signaling bits are sent in special order in a dedicated signaling frame...
- Off-balance-sheetOff-balance-sheetOff-balance sheet usually means an asset or debt or financing activity not on the company's balance sheet.Some companies may have significant amounts of off-balance sheet assets and liabilities. For example, financial institutions often offer asset management or brokerage services to their clients...