In conference bridge there are two channel. first channel: 8khz Sampling rate and 20ms frame per second (Asterisk channel. ) second channel: 8khz sampling rate and 50 ms frame per second (Null Port- UDP communication) There is a problem while transmitting from first channel to second channel on confrerence bridge the data is not properly transferred. Packets which is belong to second channel has empty parts. Doesn't conference channel handle with this problem? Is there any solution or advise. when i tried second channel as 16khz sampling rate and 50 ms frame per second there is no problem, and data is transferred perfectly.