Hi men, Resolved for one of my customers by upgrading Asterisk/Libpri/Zaptel. I don't remember what wer the versions, sorry. Check and advise us the results, please. Best Regards, Francois No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 8.0.233 / Virus Database: 270.10.19/1941 - Release Date: 02/09/09 06:50:00