Loading ...
Sorry, an error occurred while loading the content.

GNU SIP Witch - VoIP w/o Proprietary Codecs

Expand Messages
  • Seth Johnson
    Exemplary work from David Sugar continues . . . Seth ... Subject: New package GNU SIP Witch announced Date: Sun, 20 Apr 2008 08:31:57 -0400 From: David Sugar
    Message 1 of 1 , Apr 25, 2008
    • 0 Attachment
      Exemplary work from David Sugar continues . . .


      -------- Original Message --------
      Subject: New package GNU SIP Witch announced
      Date: Sun, 20 Apr 2008 08:31:57 -0400
      From: David Sugar <dyfet@...>
      To: info-gnu@...

      SIP (Session Initiation Protocol) is an IETF standard protocol for
      interconnecting telephone devices over TCP/IP networks. GNU SIP Witch
      is a call server which implements the SIP protocol standard while
      supporting generic phone system features like call forwarding, hunt
      groups and call distribution, call coverage and ring groups, holding
      and call transfer, as well as offering SIP specific capabilities such
      as presence and messaging. GNU SIP Witch will support use of secure
      telephone extensions and enables communication privacy through the use
      of peer-to-peer audio and video sessions directly between connected
      endpoints. GNU SIP Witch also supports placing and receiving calls
      directly with remote users over the public Internet without requiring
      the use of mediating VOIP "service providers" in what is commonly
      called SIP "Business-to-Business" (b2b) calling.

      GNU SIP Witch can be used together with and to interconnect common
      free software and IETF standard compliant voice and video capable SIP
      based desktop softphone applications such as Ekiga, Twinkle, Linphone,
      and OpenWango, as well as most standard compliant SIP telephone
      devices. When used together with a standard compliant SIP media
      application server such as GNU Bayonne, GNU SIP Witch will be able to
      offer users and remote callers access voice messaging and media
      application services. In the future GNU SIP Witch will offer STUN
      services and optional packet forwarding to facilitate interconnection
      when behind NAT's and firewalls in IPV4 networks. GNU SIP Witch also
      supports IPV6.

      GNU SIP Witch is not a SIP proxy, a multi-protocol telephone server,
      or a IP-PBX, and does not try to address the same things like
      asterisk, yate, or GNU bayonne2, all of which make use of direct media
      processing where media connections and streaming are at least
      initially established between each endpoint and the IP-PBX server
      itself. Direct media processing adds additional latency, and by
      introducing a central point where all media streams can be processed,
      compromises both the privacy of calls and security of encrypted
      telephone sessions.

      Instead, GNU SIP Witch focuses on doing just one thing as a pure SIP
      call server, and will try to do that one thing very well. My goal is
      to focus on achieving a network scalable telephone architecture built
      around the SIP protocol that can be deeply embedded, which can support
      secure calling nodes, that can integrate well with other SIP
      based/standards compliant components, and, by not engaging in media
      processing, that is not license encumbered by the use of "mandated"
      patent encumbered and proprietary telephony media codecs.

      The initial release of GNU SIP Witch (0.1.0) only offers support of
      SIP registration, multi-target registration, authentication peering
      over SIP, querying of registered user agents, basic audio and video
      call processing between locally registered user agents with call
      distribution for multi-target registrations, and basic SIP instant

      GNU SIP Witch requires the GNU oSIP library and eXosip extension
      library, and the (GNU) uCommon/GNU Common C++ 2.0 core library. GNU
      SIP Witch is offered under the terms of the GNU General Public License
      Version 3 or later, and has no dependencies on non-free software. GNU
      SIP Witch can be compiled and used on any GNU/Linux distribution
      supporting GCC 2.95 or later, has been tested with OpenSolaris,
      Free/Open/NetBSD, OS/X, QNX Nutrino, and can be built for use on
      Microsoft Windows targets using Debian GNU/Linux hosted MinGW32
      toolchains. GNU SIP Witch is a free software package that is part of
      the GNU Project and the GNU Telecom Subsystem.

      Downloading Source:

      GNU SIP Witch ftp://ftp.gnu.org/gnu/sipwitch
      GNU uCommon ftp://ftp.gnu.org/gnu/commoncpp
      GNU oSIP2 ftp://ftp.gnu.org/gnu/osip

      Web Resources:


      Mailing Lists and email contacts:

    Your message has been successfully submitted and would be delivered to recipients shortly.