''are you saying that when they go busy they do not return to a free state.
if they go busy and then return, you need to look at your Carrier''
Well, I am not sure how long they remains busy,(more than a minute)and i dont wait them to become available because i need them to make calls so I restart the system.
Like what problem may have my carrier?
Its a matter of wiring from the patch panel to my PBX?? Have in mind that before there was an old Panasonic there and it hadnot a problem like that.!!