[Asterisk-Users] RE: iLBC

[Steven Critchfield]

On Thu, 2003-04-17 at 09:40, Mark Spencer wrote:
> > according to raft-ietf-avt-ilbc-codec-01, rtp payload is either 38 or 50
> > bytes, right?  kphone is sending 50 byte payloads, but * seems to expect
> > 52 byte payload:
> >
> > WARNING[14350]: File codec_ilbc.c, Line 141 (ilbctolin_framein): Huh?  An
> > ilbc frame that isn't a multiple of 52 bytes long from RTP (50)?
> 
> According to draft-duric-rtp-ilbc-01.txt (the document I'd used), it says:
> "The codec has a bit rate of 13.867 bits/s using ... 416 bits per block,
> which can be packetized in 52 bytes.

Strange question. iLBC compresses 64kbits to 13.867kbits, GSM compresses
64kbits to 13.2kbits. Is there a expectation tha iLBC is going to become
a wider deployed standard than GSM? 

-- 
Steven Critchfield  <critch at basesys.com>