International Site


The Universal Signaling Protocol

In the meantime, the Session Initiation Protocol (SIP) has established itself as the most important signaling protocol both in the enterprise environment and in the provider network. One major advantage of SIP is that it can be easily extended: New formats are no problem, both synchronous and asynchronous data streams can be initiated, and the communications partners can have a peer-to-peer or client-server relationship. After attending this course, the students will be familiar with the benefits, special features, and application options of the SIP architecture in general and of SIP trunking in particular.

Course Contents

  • The Components SIP Proxy, Location Server, and User Agent
  • Back-to-Back User Agent (B2BUA) and Session Border Controller (SBC)
  • SIP Protocol: Message Types and their Setup
  • Typical SIP Processes during Connection Setup and a SIP Call
  • SIP URIs and Tel URIs: Address Formats, Identities, and their Application
  • SDP: Setup, Options, and Profiles
  • VoIP and Video over IP (RTP and Signaling) Data Streams
  • Features—Instant Messaging—Presence
  • Interaction of SIP with NAT and Firewalls
  • Fax with T.38 and Interaction with SIP
  • SIP as a Protocol in the IP Multimedia Subsystem (IMS)
  • Application of SIP in Provider Networks
  • SIP Trunking

Practice-related presentations and the analysis of traces will make the course contents easier to understand.

In this course from the ExperTeach Networking series, each participant will receive the comprehensive ExperTeach course documentation.

 Detailed table of contents

 Request your tailor-made course.

Target Group

Network designers belong to the target group of the course as much as employees who have to be familiar with SIP on the protocol layer.

Knowledge Prerequisites

A well-based know-how of the voice and IP sectors is the prerequisite for this course. Basic VoIP know-how will be very helpful for course participants.


If you are interested in a general overview of VoIP including SIP, the VoIP Fundamentals—SIP, H.323 & Co. in Application course is the right choice for you.


Supplementary Courses

The application of SIP for signaling in a Next Generation Network is discussed in the IP Multimedia Subsystem—Signaling in the NGN course. The Security for VoIP—Encryption, Authentication, and Firewalls course explains the security aspects of Voice over IP.