In this case, the customer solved this problem by adding a card reader via Wiegand. This card reader is for exiting and punching out, while Akuvox access controller for door entry and punching in.
For example, if the punch time is 8-10 am, then employees must go to work at any time in the range and ...
Suggest the use of vfone instead of SmartPlus and register it as an extension on the door intercom unit such as the R29 series. Most features of the SmartPlus would be lost and although I haven't tested I would doubt that it would work successfully. Door release DTMF would be an issue for a start. ...