VOCAL在windows下面的編譯（vc6＋sp4或者更高

（先原版引進來，抽空翻譯了）

                    VOCAL WIN32 INSTALLATION

This document explains how to build VOCAL on the Windows
platform. Currently the only portions of VOCAL ported to Windows
are the sipstack and the user agent. For more information,
please see the web site, http://www.vovida.org/ .

This release supports the VOCAL's SIP stack and user agent
on the Win32 platform.

The VOCAL SIP stack and user agent were built and tested on
Windows 2000.

Requirements:

    MSVC++ 6.0, Service Pack 4.

    Note: This release REQUIRES MSVC++ 6.0's Service Pack 4.
    If you are seeing INTERNAL COMPILER errors, chances are
    good that you have not installed the service pack.

    Last time we checked the service pack was availabe from:
      http://msdn.microsoft.com/vstudio/sp/vs6sp4/readme.asp

Compile Instructions:

    1. Download the tar ball.

    2. Unzip the vocal tar ball using winzip or an equivalent
       tool. This should create a directory called vocal-n.n.n
       that contains the software.

       i.e. winzip vocal-n.n.n.tar.gz

            Where: n.n.n is the version number.

    3. Using MSVC++ 6.0, open the workspace file vocal-n.n.n/vocal.dsw
       for the vocal workspace.

    4. Set your default project to the ua, and then build. This
       will build all the libraries and finally the user agent.
       It will place the resulting executable in

        vocal-n.n.n/sip/ua/obj.debug.Win32.i686/ua.exe.
      
    5. Sample ua configuration files for the ua can be found in

        vocal-n.n.n/sip/ua/SampleConfigFiles
      
    6. To run the ua, the pthread.dll files needs to be found in
       your path. The pthread.dll file can be found in
      
        vocal-n.n.n/contrib/win32/pthreads/obj.debug.Win32.i686

       You may want to move the pthread.dll file to the same directory
       that you are running the ua from.
      
    7. Tone files for the ua can be found in
   
        vocal-n.n.n/sip/ua/Tone
       
       When running the user agent, it will look for the various
       sound files in the Tone subdirectory of the current directory.

Running the user agent:      

    Please see the README in
   
        vocal-n.n.n/sip/ua/README   
       
    for details.
   
   
Third Party Libraries:

    The Windows port of the SIP stack uses third party libraries to
    support the POSIX PThread, regular expression, getopt, etc.
    These open source libraries were used:

    - PThread-win32 (http://sources.redhat.com/pthreads-win32).
    - Regex by Henry Spencer's Regular Expression Library
      (ftp://ftp.zoo.toronto.edu/pub/)

Testing:

    Only basic testing has been performed.
   
    The UA can successfully register with VOCAL.
   
    The UA can successfully place a basic using VOCAL. Tested
    endpoints include another VOCAL UA, and the Cisco 7960 (SIP load).
   
    The UA can successfully place a point to point call from
    one VOCAL UA to another.

Contributors:

    This software consists of voluntary contributions made by Vovida
    Networks, Inc., Cisco Systems, Inc., CUseeMe Networks, Inc., and 
    many individuals including:

    Russell Anson
    Amit Choksi
    Sunitha Kumar
    Mai Vu

Contact Information and Website:

    We welcome your feedback, suggestions and contributions. Contact us
    via email if you have questions, feedback, code submissions, and
    bug reports.

    For general inquiries - info@vovida.org

    We have mailing lists for the VOCAL applications and protocol stacks:

    VOCAL - vocal@vovida.org
    SIP - sip@vovida.org

    You can subscribe to the mailing lists on www.vovida.org.

    You can submit bug, patches, software contributions, and feature
    requests using Bugzilla.  Access Bugzilla from www.vovida.org.