The class of service as specified by the Airline. Note that class of services differ across Airlines and are not determined by Expedia

A way of expressing in simplistic terms the performance expectations associated with a particular application or session. This is used mostly in the context of the TCP/IP (layer three) environment. An analogy can be drawn to air travel: First class, coach, and stand-by are analogous to Classes of Service; whereas scheduling, length of lines, speed of a flight, width of seats, quality of meals, etc. are all analogous to Quality of Service issues.

A designation assigned to describe the service treatment and privileges given to a particular terminal. A subgrouping of telephone users for the purpose of rate distinction.

For electric utilities, a group of customers with similar characteristics (e.g. residential, commercial, industrial, etc.) that are identified for the purpose of setting a rate for service.

Used to distinguish between First Class, Business Class and Economy Class, but also used to distinguish between different fares and booking codes within the same type of service. For instance, a flight between San Francisco and New York may have 7 different "classes of service" within that class of service, but the level of service, the type of seat is general economy class.

The categorizing of telephone subscribers according to specific type of telephone use requirements (your class of service governs your access rights to selected circuit types or switch features.)

A category of customers (e.g., residential, commercial, industrial, etc.) with similar characteristics that are grouped for the purpose of setting a rate for specified electrical services.

A group of stations that share the same category for the purpose of allowing, denying or queuing features or services of the telephone system

Class of Service (CoS). Class of Service is the 802.1p priority scheme. CoS provides a method for tagging packets with priority information. A CoS value between 0-7 is added to the Layer II header of packets, where zero is the lowest priority and seven is the highest. A overlapping transmission of two or more packets that collide. The data transmitted cannot be used, and the session is restarted. Combo Ports A single logical port with two physical connections, including an RJ-45 connection and an SFP connection.

(CoS) A method for sharing attributes between entries.

COS) A feature that uses a number to specify if voice-terminal users can activate the Automatic Callback, Call Forwarding All Calls, Data Privacy, or Priority Calling features. See also Class of Restriction ( COR).

See COS.

Class of Service (CoS) is a queuing discipline. An algorithm compares fields of packets or CoS tags to classify packets and to assign to queues of differing priority. Unlike Quality of Service (QoS) traffic management, CoS does not ensure network performance or guarantee priority in delivering packets.