Hi,Has anyone ever tried hooking up some old paging amplifier (the ones you plugged into the paging port on plain old pbx systems) into an fxs port on the UC540 ? Or should I be using an fxo port instead ?Thanks.

Hi,I ran into a weird issue today setting up a UC540 :We created a blast group with 15 SPA 5xx phones and one fxs port (set up as a user phone for an analog wireless phone), but when trying to call the group, the system would just reboot on itself......