OpenBTS
Copyright 2008-2010 Free Software Foundation, Inc.
Copyright 2010 Kestrel Signal Processing, Inc.
See COPYING for licensing details.


Patent Laws

The use of this software to provide GSM services may result in the use of
patented technologies.  The user of this software is required to take whatever
actions are necessary to avoid patent infringement.


Trademark

"OpenBTS" is a registered trademark of Kestrel Signal Processing, Inc. (KSP), a
California corporation.  KSP reserves the right to control the use of this 
trademark.  Do not use this trademark in commerce without permission.


Telecom and Radio Spectrum Laws

The primary function of OpenBTS is the provision of telecommunications service
over a radio link.  This activity is heavily regulated nearly everywhere in
the world.  Users of this software are expected to comply with local and national
regulations in the jurisdictions where this software is used with radio equipment.


Legal Summary

The user of this software is expected to comply with all applicable laws and
regulations, including patent laws, copyright laws, and telecommunications
regulations.

The legal restrictions listed here are not necessarily exhaustive.


Software Licensing

OpenBTS itself is distributed publicly under AGPLv3.  KSP reserves the right to
distribute it under other licenses as well.  See the COPYING file for information
on the license for this specific distribution.

Public releases of OpenBTS use the following GPL components:
libosip2, liportp2, readline


Note to US Government Users

The OpenBTS software applications and associated documentation are "Commercial
Item(s)," as that term is defined at 48 C.F.R. Section 2.101, consisting of
"Commercial Computer Software" and "Commercial Computer Software Documentation,"
as such terms are used in 48 C.F.R. §12.212 or 48 C.F.R. §227.7202, as
applicable. Consistent with 48 C.F.R. §12.212 or 48 C.F.R. Sections 227.7202-1
through 227.7202-4, as applicable, the Commercial Computer Software and
Commercial Computer Software Documentation are being licensed to U.S. Government
end users (a) only as Commercial Items and (b) with only those rights as are
granted to all other end users pursuant to the terms and conditions of AGPLv3.


Note to US Government Contractors

GPL is not compatible with "government purpose rights" (GPR).  If you receive
OpenBTS software under GPL and deliver it under GPR, you will be in violation
of GPL and possibly subject to enforcement actions by the original authors and
copyright holders, including the Free Software Foundation, Inc.


Other Licenses

For information about acquiring OpenBTS under non-GPL licenses, contact
Kestrel Signal Processing, Inc., dburgess@kestrelsp.com.  Please be sure to
put "OpenBTS" in the subject line.