Glossary:

ATIS Telecom Glossary

Search Keyword By: I

Select a term name to open its entry and any media references. Longer definitions end with a “Read More” link.

intermediate frequency (IF)

A frequency to which a carrier frequency is shifted as an intermediate step in transmission or reception.

intermediate language

In computer programming, a target language into which all or part of a single statement or a source program--in a source language--is translated before it is further translated or interpreted.
Note: For a subsequent translation, an intermediate language may serve as a source language.

Intermediate Network

Any interconnecting network(s) between the originating network and terminating network.

Intermediate Numbers

Intermediate numbers are numbers that are made available for use by another telecommunications carrier or non-carrier entity for the purpose of providing telecommunications service to an end user or customer. Numbers ported for the purpose of transferring an established customer’s service to another service provider shall not be classified as intermediate numbers (47 CFR §
5
2. 15 (f) (1)… (Read More →)

intermediate operating system

In some operating system (OS) architectures, the OS functions that may be implemented through a central element and one or more remote elements that may do such work as area resource control or area reports. [After T1.201-1987] [After T1.204-1988]

intermediate system

A system that provides an Open Systems Interconnection--Reference Model (OSI--RM) Network Layer relay function in which data received from one corresponding network entity are forwarded to another corresponding network entity.

intermediate translation signaling point (ITSP)

A translation signaling point (TSP) that translates the global title (as received or after changing to another global title) to identify the next TSP in succession to which the switched control center system (SCCP) message is then routed. The next TSP may be another ITSP or a final TSP (FTSP). [T1.226-1992]

intermediate trunk (IT)

A channel mapping designation that ranges between 1 and 216 and relates the digital circuit multiplication equipment (DCME) transmission trunk to an internal numbering designation used within the DCME for conveying trunk-channel-to-bearer-channel connectivity via the DCME assignment channel. [T1.309-1990]

intermediate-field region

For an antenna, the transition region--lying between the near-field region and the far-field region--in which the field strength of an electromagnetic wave is dependent upon the inverse distance, inverse square of the distance, and the inverse cube of the distance from the antenna.
Note: For an antenna that is small compared to the wavelength in question, the intermediate-field region is… (Read More →)

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