I have 2 servers trunked IAX, one of them has 2 TDM800P cards to terminate calls to PSTN. the problem is all calls to PSTN is almost one-way voice. the voice is always broken. ztmonitor shows that most of the time of the call the Tx is zero, while there is always Rx activity on this channel. Any clue? I am using Asterisk 1.4.5, G729, SIP from clients to 1st server, IAX between servers, one of the server is NATed. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20070704/17363402/attachment.htm