What could have caused a system(on the same side of NAT on our LAN ) that have been working perfectly ie you can call and both parties can hear themselves very well to start having the problem described below (1) the caller can hear the other party very well ,but the other party hears cracked and sleepy voice . (2)the caller can hear the other party very well ,but the other party hears cracked and inaudible voice I will be expecting your reply Thanks --------------------------------- Yahoo! Messenger with Voice. Make PC-to-Phone Calls to the US (and 30+ countries) for 2?/min or less. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20060327/84443fb0/attachment.htm