SIP proxy

Also called a SIP server or SIP proxy server, in telecommunications it is one of the main components of an IP PBX that is used by SIP to perform many of the call set-up functions. As described in RFC 3621 – SIP: Session Initiation Protocol SIP makes use of elements, called proxy servers (SIP proxy) “to route requests to the user’s current location, authenticate and authorizeusers for services, implement provider call-routing policies, and provide features to users”.

Within the SIP network the SIP proxy actually manages the setup of calls between SIP devices including the controlling of call routing and it also performs necessary functions such as registration, authorization, network access control and in some cases it also handles network security.

See Session Initiation Protocol (SIP).
See also “Understanding SIP Part V: SIP Signaling” on Enterprise VoIP Planet.
Also see “VoIP and the Small Business” in the “Did You Know…” section of Webopedia.
Also see “Internet Telephony” in the Quick Reference section of Webopedia.

Vangie Beal
Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.

Top Articles

Huge List Of Texting and Online Chat Abbreviations

From A3 to ZZZ we list 1,559 text message and online chat abbreviations to help you translate and understand today's texting lingo. Includes Top...

How To Create A Desktop Shortcut To A Website

This Webopedia guide will show you how to create a desktop shortcut to a website using Firefox, Chrome or Internet Explorer (IE). Creating a desktop...

The History Of Windows Operating Systems

Microsoft Windows is a family of operating systems. We look at the history of Microsoft's Windows operating systems (Windows OS) from 1985 to present...

Hotmail [Outlook] Email Accounts

  By Vangie Beal Hotmail is one of the first public webmail services that can be accessed from any web browser. Prior to Hotmail and its...

Unregulated Power Supply Definition...

An unregulated power supply is a system that transforms input voltage into direct...

Cybersecurity Awareness Training Definition...

Cybersecurity awareness training informs employees of the attack surfaces and vectors in their...

OST File Definition &...

An OST file, or offline storage table (.ost) file, is an Offline Outlook...