Definition

ITU X.225 (ISO 8327)

Part of the Networking and communications glossary:

ITU X.225 (also known as ISO 8327) is a connection-oriented session layer protocol in the Open Systems Interconnection (OSI) model.  The ITU X.225 protocol specification is a recommendation of the International Telecommunication Union (ITU).

The session layer is layer five in the seven-layer telecommunications model. Session layer protocols provide services for coordinating communication between local and remote applications, establishing, managing and terminating connections. ITU X.225 and other session layer protocols use suspend/resume or checkpoint/rollback capabilities to ensure synchronization of things such as audio and video. Session layer protocols also manage connection security. 

Other protocols that may be used in this layer include AppleTalk RPC Session Control Protocol (SCP) and Zone Information Protocol (ZIP).

This was last updated in July 2013
Contributor(s): Matthew Haughn
Posted by: Margaret Rouse

Related Terms

Definitions

Glossaries

  • Networking and communications

    - Terms related to networking and communications, including definitions about network protocols and words and phrases about data transmission.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question About ITU X.225 (ISO 8327)Powered by ITKnowledgeExchange.com

Get answers from your peers on your most technical challenges

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.