1. Synonym abbreviated dialing.
2. Dialing at a speed greater than the normal ten pulses per second.

The speed of an electromagnetic wave in free space, precisely 299,792,458 m/s.
Note 1: The preceding figure is precise because by international agreement the meter is now defined in terms of the speed of light.
Note 2: The speed of an electromagnetic wave, e.g., light, is equal to the product of the wavelength and the frequency.
Note 3: In any… (Read More →)

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.