This document will not tell you the basics about SIP, IP Telephony, how SER relates to other open source software, and why you should use SER. We assume you have decided to use SER for your SIP-related needs, and you now need to get up to speed on the concepts and how to realize most of the core functionality that SER can offer. This document describes how to set up SER to function as a SIP Proxy, SIP Registrar and SIP Redirect Server. It is based upon version 0.9.3 of SER and section 10 Appendix - How to download and configure the latest version of tells you how to download this version and install.

This section covers the most important concepts that you must understand in order to get SER up and running and start adapting it to your needs and that from experience many people have problems understanding. However, this document is NOT a manual. The official SER manual can be found at http://www.iptel.org/ser/admin.html

All ser.cfg configuration files can be downloaded from http://www.onsip.org/ under the Downloads section. Onsip.org has been started to facilitate a sharing community around SER and was initiated as part of the effort to write the first version of this Getting Started document. Please register and become a contributor to the success of SER!

NOTE: It is important to understand that SER is a SIP router. It only processes SIP messages. All other IP telephony functionality, such as voice mail, can only be implemented by using external applications.