Hi, i have arround 150 cisco phones which are on 7.4.3 firmware (mostly 504g and some 525g) and i must use 3cx provisioning to configure that phones, 3cx has a provisioning template for 7.5.3 firmware. I am not sure will this work, what i see is that config syntax for 7.4.3 and 7.5.3 is different?? :S Maybe some of you have cisco.ph and ciscoSPA525.ph files for 7.4.3 firmware? Any Suggestions? p.s. all that phones are in a production, downtime must be minimal when changeing phones from one pbx to 3cx.