atcomsystems.ca/forum Forums Thread Like Summary - Any such device or work around?

What I would like to do is to access my intercom line from a outside line. For example, to call in on my voip number and be connected to my 1a2 key intercom line to control relays. Any type of device that will do this? I could program my Nortel BCM 50 to answer on a dedicated line and ext and have that ext forward to another line where I do have my intercom connected but I would like to see if I could do with out the Nortel if possible.

I second the Viking RAD-1A for DISA-like access with security to access a 1A2 intercom unit. That unit is basically a tree of relays that respond to one- or two-digit dial codes. Coupled with external slave or latching relays, a myriad of devices can be controlled. Yes, this has been done many times in the past.

Viking RAD-AMP in Line Extender Mode?
https://vikingelectronics.com/wp-content/uploads/documents/product_manual/RAD-AMP.pdf