<snip> I'll try to explain myself better. The PBX has only one FXO card, connected to the PSTN. There is no other phones connected to the PBX nor SIP extensions. There are analog phones connected to the same PSTN.
What I try to do is that, when there is an incoming call from the ouside, if someone answers on a phone, then the PBX won't answer. If you want to be certain that the Asterisk system won't interfere with an active call, you can install an exclusion device between the PSTN and the FXO card. Google "telephone exclusion device". --Don Don Kelly PCF Corp People Come First 651 842-1000 651 842-1001 fax -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users