Glossary:

ATIS Telecom Glossary

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Internet Engineering Task Force

One of the task forces (with more than 40 working groups) of the Internet Architecture Board, responsible for solving short-term engineering needs of the Internet.

Internet Group Management Protocol version 2 (IGMP v2)

IGMP v2, as defined in RFC 2236, is an enhancement to the original version of the IGMP protocol that adds “leave” messaging in conjunction with existing “join” messaging. IGMPv2 does not support SSM since the join and leave messages only define the group address and not the source address.

Internet phone

A combination of software and hardware that allows a user to approximate a telephone conversation over an Internet connection instead of using a traditional telephone system.
Note 1: The required hardware generally consists of a microphone and headphones.
Note 2: The sound quality of current Internet-phone systems is much less than that of traditional telephone systems. Synonym Web phone.

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