How i can log to understand where is my problem Sometimes zaphfc hang my nt1 plus with that error zaphfc: empty HDLC frame received. zaphfc: dchan tx fifo total number of frames exceeded! zaphfc: dchan tx fifo total number of frames exceeded! zaphfc: dchan tx fifo total number of frames exceeded! zaphfc: dchan tx fifo total number of frames exceeded! zaphfc: dchan tx fifo total number of frames exceeded! zaphfc: empty HDLC frame received and i must call telecomitalia to reset isdn an all work correctly for entire day During the night i always this problem zaphfc: empty HDLC frame received. zaphfc: dchan tx fifo total number of frames exceeded! zaphfc: dchan tx fifo total number of frames exceeded! zaphfc: dchan tx fifo total number of frames exceeded! zaphfc: dchan tx fifo total number of frames exceeded! zaphfc: dchan tx fifo total number of frames exceeded! zaphfc: empty HDLC frame received Thank's Tiziano -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20040428/9da7bf3a/attachment.htm