Post by thread:[EE] VOIP Codecs and stuff

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_OUTinfoTakeThisOuTjanso.com.ar http://www.janso.com.ar (54) 11 - 4542 - 3519 {Original Message removed}

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