In the exchange of
information
Information is an Abstraction, abstract concept that refers to something which has the power Communication, to inform. At the most fundamental level, it pertains to the Interpretation (philosophy), interpretation (perhaps Interpretation (log ...
over a
communication channel
A communication 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 in telecommunications and computer networking. A channel is used for infor ...
, an out-of-band agreement is an agreement or understanding between the communicating parties that is not included in any
message
A message is a unit of communication that conveys information from a sender to a receiver. It can be transmitted through various forms, such as spoken or written words, signals, or electronic data, and can range from simple instructions to co ...
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
Semantics is the study of linguistic Meaning (philosophy), meaning. It examines what meaning is, how words get their meaning, and how the meaning of a complex expression depends on its parts. Part of this process involves the distinction betwee ...
of the request/response interface but which is not part of the formal or contractual description of the interface specification itself.
See also
*
API
An application programming interface (API) is a connection between computers or between computer programs. It is a type of software interface, offering a service to other pieces of software. A document or standard that describes how to build ...
*
Contract
A contract is an agreement that specifies certain legally enforceable rights and obligations pertaining to two or more parties. A contract typically involves consent to transfer of goods, services, money, or promise to transfer any of thos ...
*
Out-of-band
In telecommunications, out-of-band activity is activity outside a defined frequency band, or, metaphorically, outside of any primary communication channel. Protection from falsing is among its purposes.
Examples General usage
* Out-of-band agr ...
*
Off-balance-sheet
In accounting, "off-balance-sheet" (OBS), or incognito leverage, usually describes an asset, debt, or financing activity not on the company's balance sheet. Total return swaps are an example of an off-balance-sheet item.
Some companies may have ...
*
Parol evidence rule
The parol evidence rule is a rule in common law jurisdictions limiting the kinds of evidence parties to a contract dispute can introduce when trying to determine the specific terms of a contract and precluding parties who have reduced their agre ...
External links
SakaiProject definition
Computer networking
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