1. The time between release of a message by the originator to receipt of the message by the addressee, as perceived by the end user. Synonym originator-to-recipient speed of service.
2. The time between entry of a message into a communications system and receipt of the message at the terminating communications facility, i.e., the communications facility serving the addressee, as… (Read More →)

Synonym camp-on busy signal.

Service Provider ID

See bot, droid.

An extremely short pulse of relatively high amplitude.

See last-in first-out.

In automatic switching, the transfer of full control on a call to the succeeding office by sending forward the complete telephone address of the called party.

A service feature, in the operation of an intermediate office, that, acting on incoming trunk service treatment indications, assumes routing control of the call from the originating office.
Note: This increases the chances of completion by offering the call to more trunk groups than are available in the originating office.

In an antenna, the part of the radiated energy from the feed that does not impinge on the reflectors.

A track with a spiral shape written on a diskette, as part of a method of copy protection. [2382-pt.8]