Glossary:

ATIS Telecom Glossary

Search Keyword By: Network

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

open network architecture (ONA)

In the context of the FCC's Computer Inquiry III, the overall design of a communication carrier's basic network facilities and services to permit all users of the basic network to interconnect to specific basic network functions and interfaces on an unbundled, equal-access basis.
Note: The ONA concept consists of three integral components: (a) basic serving arrangements (BSAs), (b) basic service… (Read More →)

Optical Network Terminal (ONT)

Terminates the fiber network in an FTTP FTTx scenario. Typically the ONT provides the NID function. One per home subscriber.

optical network unit (ONU)

A network element that is part of a fiber-in-the-loop system interfacing the customer analog access cables and the fiber facilities. [T1.508-1998]

Optical Transport Network (OTN)

The use of optical fiber networks to transport data frames from multiple data sources over an optical wavelength channel.

origination network

The signaling network that initiates a non-circuit-related message containing intermediate signaling network indication (ISNI) information; this network may send subsequent messages based on the received ISNI information. [T1.118-1992]

perimeter network

A network added between a protected network and an external network, in order to provide an additional layer of security. A perimeter network is sometimes called a DMZ.

preemphasis network

A network inserted in a system in order to increase the magnitude of one range of frequencies with respect to another.
Note: Preemphasis is usually employed in FM or phase modulation transmitters to equalize the modulating signal drive power in terms of deviation ratio. The receiver demodulation process includes a reciprocal network, called a deemphasis network, to restore the original… (Read More →)

Private Networks

Private networks are composed of stations which are not directly accessible from all PSTN stations via the use of NANP E.164 numbers.

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