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'[EE] VOIP Codecs and stuff'
2005\09\14@071733
by
Russell McMahon
2005\09\14@075235
by
Mauricio Jancic
What about the Microchip TCP/IP stack plus a compression codec plus a
ENC28J60 or any ethernet chip?
do you thik it would work?
Kind Regards,
Mauricio Jancic
Janso Desarrollos - Microchip Consultants Program Member
spam_OUTinfoTakeThisOuT
janso.com.ar
http://www.janso.com.ar
(54) 11 - 4542 - 3519
{Original Message removed}
2005\09\14@100632
by
Alex Harford
2005\09\14@175931
by
Peter
On Wed, 14 Sep 2005, Mauricio Jancic wrote:
> What about the Microchip TCP/IP stack plus a compression codec plus a
> ENC28J60 or any ethernet chip?
>
> do you thik it would work?
^n
If you have enough bandwidth for u-law you do not need compression.
u-law needs 8 kByes/sec in each direction with *low* latency. The
simpler the circuit and the software the better. There is no reason why
it would not work. Probably in a dsPIC with a/d so a little audio
filtering can be performed. The easiest protocol to implement is
probably IAX2 (Asterisk's native protocol). TCP is not required, UDP is
enough. The other protocols seem to have been designed by commitee (H323
for sure, SIP comes close). IAX2 *works* _*NOW*_.
Peter
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