Hi there, has anyone seen specifications of the codec g711-HD? This is right now spreading fast in the wake up CATiq (the DECT successor), for example in the AVM products (www.avm.de). Is this a re-branded g711.1 (rfc5391) and therefore compatiable with it, or a different animal? And what are the license & patents restrictions? Philipp
Philipp von Klitzing wrote:> Hi there, > > has anyone seen specifications of the codec g711-HD? This is right now > spreading fast in the wake up CATiq (the DECT successor), for example in > the AVM products (www.avm.de). > > Is this a re-branded g711.1 (rfc5391) and therefore compatiable with it, > or a different animal? And what are the license & patents restrictions? >Googling for G.711-HD only produces hits about AVM. The AVM web site is very vague. CAT-iq supports G.722 for wideband voice. the CAT-iq web site describes this as "CD quality". I guess the person who wrote that has severely impaired hearing. :-) G.711.1 is a really brain dead codec. I find it hard to believe there will ever be much take up of it. Regards, Steve
Hi!> > has anyone seen specifications of the codec g711-HD? This is right now > > spreading fast in the wake up CATiq (the DECT successor), for example in > > the AVM products (www.avm.de). > > > Googling for G.711-HD only produces hits about AVM. The AVM web site is > very vague.AVM support answered: g711-HD is g711 A-Law sampled with 16 kHz. Currently AVM does not have intentions to support Siren7, Siren14, SILK or CELT in the near future, they will stick to g722 and (g711-HD between their own devices with double the bandwidth of g722 when this is readily available).> G.711.1 is a really brain dead codec. I find it hard to believe there will > ever be much take up of it.Still I am curious: What exactly is braindead about it? Philipp
Philipp von Klitzing wrote:> Hi! > > >>> has anyone seen specifications of the codec g711-HD? This is right now >>> spreading fast in the wake up CATiq (the DECT successor), for example in >>> the AVM products (www.avm.de). >>> >>> >> Googling for G.711-HD only produces hits about AVM. The AVM web site is >> very vague. >> > > AVM support answered: g711-HD is g711 A-Law sampled with 16 kHz. > > Currently AVM does not have intentions to support Siren7, Siren14, SILK > or CELT in the near future, they will stick to g722 and (g711-HD between > their own devices with double the bandwidth of g722 when this is readily > available). > > >> G.711.1 is a really brain dead codec. I find it hard to believe there will >> ever be much take up of it. >> > > Still I am curious: What exactly is braindead about it? >See for yourself. The spec free, though the ITU patents database lists patents on its methods - http://www.itu.int/rec/T-REC-G.711.1-200803-P/en Steve