FXO PBX This topic has 0 replies, 1 voice, and was last updated 20 years, 10 months ago by Kimyon. Viewing 1 post (of 1 total) Author Posts 23rd January 2003 at 09:18 #23400 KimyonGuest How should I configure a FXO port on Cisco 3640 for a PBX connection? The diagram is: Phone1 — PBX — FXO — Cisco 3640 — IP Network — Cisco 1700 — FXS — Phone2 When Phone1 dials the number of FXO he cannot get dial tone? Is there a problem at PBX connection or FXO configuration? Author Posts Viewing 1 post (of 1 total) The forum ‘Voice over IP’ is closed to new topics and replies.