See class of service.

A two-digit code used in the EC-to-IC (exchange carrier-to-interexchange carrier) facility/service selective signaling protocol and the IC-to-EC facility/service selective signaling protocol that identifies the type of service requested. [T1.104-1991]

Service composition imparts to the user the experience of one seamless, composite service instead of separate services, by way of additional functionality that binds service enablers together.

A sharing of an active service among devices or networks. This can include various manipulations to share, extend, or prune membership in a multi-party service or multi-network connectivity that supports it. The concept of concurrence applies not only to a service, but also to sessions, application associations and to context.

The continuation of active service across devices, or access networks, or both from the user's point of view. For example, service continuity can apply to single services such as voice, or to composite services such as voice and video along with associated data exchange such as web browsing or instant messaging. Service continuity may be seamless and performed automatically. Alternatively,… (Read More →)

Direction of the functions or processes used to provide a specific telecommunications service. [T1.667-1999]

The real-time database systems in the Exchange Carrier network that contain routing instructions downloaded by the SMS/800 andimplements service control functions. such as:

Call control
Call state control function
Multimedia session control function

An entity designated to manage and administer Service Control Points (SCPs).

A similar service experience from the user's perspective provided across different provider networks, access technologies, and end devices, recognizing the limitations of different devices and technologies. Converged services can leverage shared application functions, across different access media, terminal types, and service providers. An example of service convergence would be email service delivered to a mobile terminal, a television, or a… (Read More →)

In layered systems, a set of data that is sent by a user of the services of a given layer, and is transmitted to a peer service user semantically unchanged.