We're working on an updated IPR statement.
We had it on our list of things that need doing, but until now, it
didn't seem the most urgent thing in the world.
Harald (for once speaking for Google).
On 09/07/11 17:18, Kevin P. Fleming wrote:
RFC 3951 is the specification of iLBC, and includes the reference
implementation in C source code. This is distributed by the IETF under
its normal license terms (BSD-style). However, the creators of the
codec claimed to have patents that would be infringed by
distribution/usage of that code (and made appropriate IPR disclosures
to the IETF), and they offered a free patent non-assert license via
the 'ilbcfreeware.org' web site. Many people have been taking
advantage of this license for years now, in order to ensure they could
safely use the code from RFC 3951.
After Google's acquisition of GIPS, the situation has changed. There
is a new implementation of iLBC on the WebRTC site, under a different
license, with an explicit patent grant. However, that patent grant
applies *only* to the WebRTC implementation, not the implementation in
RFC 3951. The previous license mechanism on 'ilbcfreeware.org' has
been removed and is no longer available.
This leaves the community in the unfortunate situation of having an
RFC that contains a reference implementation, which has had IPR
disclosures made against it, but for which no free licensing terms are
available (even though they were in the past).
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