Open Source - SIP stack

"Ira Kadin" <ikadinAirspan.com> asks:

> Dear all,
>
> could you suggest the open source SIP Stack for
developing
>
> *       Softphones and       Gateways - Windows
platform
>
>
>
> thanks
>
>
>
> Irena

The RNID [1] have developed a SIP stack in Delphi. It's
licenced under an
almost-BSD-with-advertising licence. The
"almost" part is a clause that
requires you to provide equivalent services to deaf and hard
of hearing
people as you do to hearing people. [2]

It's easy to build a UI on top of that and, while I
haven't done so yet, it
should be as easy to build B2BUAs or gateways on top of the
stack.

frank


[1] Royal National Institute for Deaf people, a UK-based
charity.
[2] The licence, at ht
tp://www.ictrnid.org.uk/docs/gw/rnid_license.txt,
reads:

Copyright (C) 2003 Royal National Institute for Deaf People
(RNID).

You may redistribute or use the source or binary code with
or without
modification providing you abide by the following
restrictions:-

1.  You MUST distribute this agreement with any source or
binary
    distribution.  This license will also apply to any third
party who
    receives the software from you.

2.  You MUST acknowledge the use of RNID code in any
advertising material
    used to advertise ANY product or service that is derived
from or
    makes use of the code.

3.  You MUST acknowledge the use of RNID code on splash
screens, in
    "about" boxes and any other location where
there is a copyright
    notice.

4.  You may NOT use the name of the RNID in any other way,
in relation
    to a product or service that is derived from or makes
use of the
    code except with permission, in writing from the RNID.

5.  You must NOT use this software or parts thereof to build
products
    or services that do not provide deaf, hard of hearing
and speech
    impaired people with equivalent service to hearing
people.  In
    particular you may not use this software to build
voice-only systems.

THIS SOFTWARE IS OFFERED FREELY AND ENTIRELY WITHOUT
WARRANTY.

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