You can set the ACU-1000/2000/5000/T/M to have modules patched together on whenever it powers on. In order to do so, follow the appropriate instructions for your system below.
The state of the interoperability nets will remain persistent across power cycles.
Set the patch(es) that you want to have on boot, then enter "*36" on the front/top keypad. You will get a voice prompt saying "Saving configuration." to confirm.
Set the patch(es) that you want to have on boot, then from the home dialog on the front panel, choose Nets, and Pwr On Cfg.
The ACU-5000 will let you restore the interoperability nets that were last set in the GUI. Under Preferences > System Memory Setting > Restore Nets on Power Up should be set to Yes for this behavior. Note that VoIP and PSTN connections will require additional actions for complete restoration of the initial nets – that is, the operator (or external user) will have to call back to restore the external connection.