Bug#618427: ITP: sipwitch -- secure peer-to-peer VoIP server for the SIP protocol

[Timo Juhani Lindfors <timo.lindfors@iki.fi>]

Jonas Smedegaard <dr@jones.dk> writes:
>  GNU SIP Witch is a secure peer-to-peer VoIP server.  Calls can be made
>  even behind NAT firewalls, and without needing a service provider.  SIP
>  Witch can be used on the desktop to create bottom-up secure calling
>  networks as a free software alternative to Skype.  SIP Witch can also
>  be used as a stand-alone SIP-based office telephone server, or to
>  create secure VoIP networks for an existing IP-PBX such as Asterisk,
>  FreeSWITCH, or Yate.

Sounds too good to be true ;-) Can you elaborate if this still requires
UDP?  We have a department at university where only TCP traffic is
allowed to internet.

Also, can it work over a HTTP proxy? Many WLAN networks only let you
access internet over such a proxy.