asterisk users - Nov 2010 - Help Required (How to acheive packetization time of 60ms over SIP/IAX2 trunk)

Respected Sir,
 
    I want your help regarding an issue on asterisk. I hope my mail will not
disturb your daily routine. My issue is I am connecting two asterisk over
IIAX2/SIP trunk. I have successfully connected multiple server and every client
from one server to call any other server's client. But problem is I want to
use Speex@ 2.15kbs and also packetization time is 60ms but I can not achieve
desired results I have debugged the call procedure codec offered is speex and
ptime=60 but when I check the communication between two servers then it gives me
packetization time on 20ms (but codec is speex) i.e 50-55 packets per second
kindly can you provide me little regarding this issue.......thanks in advance
for help
 
Regards
Ali Raza Anjum
 

  		 	   		  
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