Performance testing tool for the SIP protocol

 sip-tester is a test tool and traffic generator for the SIP
 protocol. It can be used to test SIP equipment like SIP
 proxies, SIP media servers, etc. and to emulate user agents
 calling a SIP system.
 .
 Its features are:
  * a few basic SipStone user agent scenarios included
  * custom XML scenario files even for complex call flows
  * comprehensive set of real-time statistics
  * TCP and UDP transport
  * dynamically adjustable call rates
  - send RTP traffic
 .
 This software is distributed as SIPp by its authors.
 .
 SIP is the Session Initiation Protocol, a standard signalling
 protocol for initiating, modifying, and terminating Internet
 conferencing, telephony (VoIP - Voice over IP), video, and
 instant messaging.
 .
 This package has been built for distributed pauses with the
 GNU Scientific Libraries and without openssl due licenses
 incompatibilities, so authentication is not supported.