Door phone/camera is working when you press the button it calls extensions we are just trying to figure out how to open the door by pressing a digit on the phone if this is even possible I was thinking that I could install a PDGU
Just for the relay portion of it



Hi I’m just wondering what I need to do in order to use the door Access

I think I know what to do I’ve been thinking about this for a while now

Thanks

What model NEC system?

What's the telephone interface SIP?

SV9100 all IP Phones and door box has SIP Interface

Ya, it should work with NEC. You will need to do some programming to enable RFC/DTMF to work. I have used these devices (another brand) but it's all the same. They connect and them dial a digit to open a gate. One spot is you have to enable the DTMF/RFC and then enable the extension to press/receive DTMF after call is established.