I have a doorphone system setup for my front doorbell. There is a remote door unit which includes the pushbutton as well as speaker/mic. When the button is pushed the main doorphone unit rings the house telephones and you can pick up any telephone to converse with the person at the door. It also has call waiting feature so if you are talking to someone at the front door and the phone rings you will hear it and similarly if you are on the phone and the doorbell rings you can hear that as well through the handpiece.
It accomplishes this by having the phone line from the house demarc enter the main doorphone unit first and then go to the rest of the house telephone distribution.
Now here is my problem, my wife hates the distinctive ring of the doorphone. We have the system connected to our ELK so when the doorbell rings we get a nice Westminster chime sound through all the speakers. What I want to do is silence the phone ringing signal but still open the phone line for communication to the front door. In other words notification that someone is at the door would be by the existing ELK chimes but you could still pick up the phone to communicate when the doorbell rings. Basically it requires eliminating the ring signal generated from the main doorphone unit.
I was all ready to place a diode bridge across the outgoing doorphone phone lines but then I realized that there was no way to do this externally without blocking ring signal for all telephone calls. Remember the phone line goes through this device prior to distribution throughout the house.
I have some photos of the circuit board attached. I am willing and able to connect up a diode bride to the existing circuit or cannibalize it any other way that someone could recommend. I was also wondering if that large capacitor might be somehow involved in generating the higher voltage for the ring signal.
If you are wondering....I did contact the manufacturer who was not interested in helping me and advised that disabling the ring signal was not possible. Also the unit is now a few years old and the warrantee is expired so i am not worried about voiding anything
I have my soldering iron ready.......
It accomplishes this by having the phone line from the house demarc enter the main doorphone unit first and then go to the rest of the house telephone distribution.
Now here is my problem, my wife hates the distinctive ring of the doorphone. We have the system connected to our ELK so when the doorbell rings we get a nice Westminster chime sound through all the speakers. What I want to do is silence the phone ringing signal but still open the phone line for communication to the front door. In other words notification that someone is at the door would be by the existing ELK chimes but you could still pick up the phone to communicate when the doorbell rings. Basically it requires eliminating the ring signal generated from the main doorphone unit.
I was all ready to place a diode bridge across the outgoing doorphone phone lines but then I realized that there was no way to do this externally without blocking ring signal for all telephone calls. Remember the phone line goes through this device prior to distribution throughout the house.
I have some photos of the circuit board attached. I am willing and able to connect up a diode bride to the existing circuit or cannibalize it any other way that someone could recommend. I was also wondering if that large capacitor might be somehow involved in generating the higher voltage for the ring signal.
If you are wondering....I did contact the manufacturer who was not interested in helping me and advised that disabling the ring signal was not possible. Also the unit is now a few years old and the warrantee is expired so i am not worried about voiding anything
I have my soldering iron ready.......