[Asterisk-Users] Prblem with 723 and 729

[Kanishka Somaratne]

Hi
I have G729 and G723 codecs installed, I made some calling using a SIP IP 
phone. when I used the codecs 723 and 729 the call volume is less and the 
sound is little jerky, it's like call signals coming in and out.

when I use gsm or G711 it works great sound quality is crystal clear.

is this some thing to do with jitter buffer , is there a way to increase the 
volume using asterisk.

tks
kani