telecommunication Telecommunication is the transmission of information by various types of technologies over wire, radio, optical, or other electromagnetic systems. It has its origin in the desire of humans for communication over a distance greater than tha ...

, speed of service is the

time Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future. It is a component quantity of various measurements used to sequence events, t ...

for a

message A message is a discrete unit of communication intended by the source for consumption by some recipient or group of recipients. A message may be delivered by various means, including courier, telegraphy, carrier pigeon and electronic bus. ...

to be received. For example: #The time between release of a message by the originator to receipt of the message by the addressee, as perceived by the

end user In product development, an end user (sometimes end-user) is a person who ultimately uses or is intended to ultimately use a product. The end user stands in contrast to users who support or maintain the product, such as sysops, system administrat ...

. (''originator-to-recipient speed of service'') #The time between entry of a message into a

communications system A communications system or communication system is a collection of individual telecommunications networks, transmission systems, relay stations, tributary stations, and terminal equipment usually capable of interconnection and interoper ...

and receipt of the message at the terminating communications

facility Facility may refer to: * A place for doing something, or a place that facilitates an activity: ** A commercial or institutional building, such as a hotel, resort, school, office complex, sports arena, or convention center ** Medical facili ...

, ''i.e.,'' the communications facility serving the addressee, as measured by the system.

References

* Telecommunications engineering {{telecomm-stub