Getting SIPp

SIPp is released under the GNU GPL license. All the terms of the license apply. It was originally created and provided to the SIP community by Hewlett-Packard engineers in hope it can be useful, but HP does not provide any support nor warranty concerning SIPp.

SIPp releases

Like many other “open source” projects, there are two versions of SIPp: a stable and unstable release. Stable release: before being labelled as “stable”, a SIPp release is thoroughly tested. So you can be confident that all mentioned features will work :)


Use the stable release for your everyday use and if you are not blocked by a specific feature present in the “unstable release” (see below).

SIPp stable download page

Unstable release

Unstable release: all new features and bug fixes are checked in SIPp’s master tree repository as soon as they are available.


Use the unstable release if you absolutely need a bug fix or a feature that is not in the stable release.

Available platforms

SIPp is available on Linux and Cygwin. Other Unix distributions are likely to work, but are not tested every release cycle.


SIPp on Cygwin works only on Windows XP and later versions and will not work on Win2000. This is because of IPv6 support.

Installing SIPp

  • On Linux, SIPp is provided in the form of source code. You will need to compile SIPp to actually use it.

  • Pre-requisites to compile SIPp are:

    • C++ Compiler
    • curses or ncurses library
    • For TLS support: OpenSSL >= 0.9.8
    • For pcap play support: libpcap and libnet
    • For SCTP support: lksctp-tools
    • For distributed pauses: Gnu Scientific Libraries
  • You have four options to compile SIPp:

    • Without TLS (Transport Layer Security), SCTP or PCAP support – this is the recommended setup if you don’t need to handle SCTP, TLS or PCAP:

      tar -xvzf sipp-xxx.tar
      cd sipp
    • With TLS support, you must have installed OpenSSL library (>=0.9.8) (which may come with your system). Building SIPp consists only of adding the --with-openssl option to the configure command:

      tar -xvzf sipp-xxx.tar.gz
      cd sipp
      ./configure --with-openssl
    • With PCAP play support:

      tar -xvzf sipp-xxx.tar.gz
      cd sipp
      ./configure --with-pcap
    • With SCTP support:

      tar -xvzf sipp-xxx.tar.gz
      cd sipp
      ./configure --with-sctp
    • You can also combine these various options, e.g.:

      tar -xvzf sipp-xxx.tar.gz
      cd sipp
      ./configure --with-sctp --with-pcap --with-openssl


SIPp compiles under CYGWIN on Windows, provided that you installed IPv6 extension for CYGWIN, as well as libncurses and (optionally OpenSSL and WinPcap). SCTP is not currently supported.

  • To compile SIPp on Windows with pcap (media support), you must:

    • Copy the WinPcap developer package to “C:cygwinlibWpdPack”
    • Remove or rename “pthread.h” in “C:cygwinlibWpdPackInclude”, as it interfers with pthread.h from cygwin
    • Compile according to the instructions above.