Hi,
I am trying to control the Door Opener from an outside CO call (only I would know that feature). The system is KX-TD816 v1 and KX-TVP200 v1 in DPT integration mode, doorphone card present but no door phone connected. I would normally do this when my call is answered by the VPS. I was thinking of:
-Create and connect one analog extension port to the second CO port on the 816 (currently have only one real CO line equipped),
-Enable the 2nd CO line,
-In the VPS, set up Remote Call Forwarding to CO line for that new looped extension. Program 551 (code to open door) as the external CO forwarding phone number.
A door opening call would be:
-When withing the VPS, dial #8 (call transfer) and dial that fake extension number. This should seize the 2nd CO line and dial 551 into the looped extension, opening the door.
It is twisted, I admit

, but will it work? Is there an easier way of doing this?
Thanks in advance,
Bert.