Disconnecting old security system

First steps to install konnected alarm panel. Disconnected the 120V and battery to my old system. The old keypad starts to beep indicating no power. Is it just a matter of disconnecting the wires to the old system: Aux power, AC, keypad, then siren?

Ok I will see that

disconnect the 120V and battery on your old system. Then disconnect all the wires to the old system: Aux power, AC, keypad, siren, zones, etc. 

nice post

many tyhanks