Door Phone - Different Setup

[cmnstr]

Hopefully someone has seen this before and can provide some insight. I have a customer with a door phone/gate entry system connected to a CO line. The interesting thing about this is that the call box piggybacks on an active CO line. If you call the CO line directly the phone rings on the IP Office 500v2 (6.0.14) exactly as it should. However, when you call from the call box the phone does not ring and the call does not show in SSA. If I disconnect the line from the IPO and connect to by butt set it will ring, so I know the call is getting to the system. This line was previously connected to a Partner ACS and it worked fine so I am not sure why there is a problem on the IPO.

As a side note, if I add a line appearance to a telephone and go offhook on that line I can talk to the call box to open the gate. The problem appears to be on inbound calls from the call box only.

Any ideas or suggestions? Obviously, running a line from the call box to a vacant CO port would be ideal but I don't know if that will be an option, especially since it worked on the PACS.

 

[TouchToneTommy]

The doorphone has its own talk battery supply, and ringing generator built inside of it. The ring generator is not putting out enough voltage, or the waveform is too square to be recgonized as a ring signal by the IPO. A call from the CO is simply passed through the doorbox, so that ring signal is fine.

What brand of doorphone? Doorking is one that I an familiar with that uses that setup. Most will have an option to program in a telephone number, and when the resident is away, pressing the call button on the doorphone access the dial tone and dials the number instead of generating ring signal into the residence. So you could reconnect the doorbox by running the CO line directly into the IPO, and using a single line analogue station to feed the doorbox. Program the doorbox to be in the "away" mode 24/7, and the "telephone number" that it dials would be a hunt group programmed to ring on the phones.

 

[jamie77]

Let me get this straight if you connect the provider CO to the IPO that works ok. If you connect the doorphone to the IPO on the same port, it deosn't work.

If the CO works on the IPO then you are connecting it an analogue trunk port on the IPO. If the doorphone works on the CO line, then it should be connected to an analogue extn on the IPO, not a trunk port.

Think simply, if it works on a CO line, it wants dial tone. IPO trunk ports doen't give that but extns do.

Also, when connecting to a trunk port, you need to use incomming call routing not dialling digits.

Jamie Green

Football is not a matter of life and death-It is far more important!!!!

 

[mforrence]

It sounds like you have both devices connected in parallel on one CO port of IPO. I suspect that neither the LEC nor the door box is thrilled to have "foreign" ring voltage on the circuit - in your case, ring voltage from the other device. Are you out of IPO trunk ports? If doorbox will just go off hook without ring, maybe connect to a station port and configure for ringdown.
Mike

 

[cmnstr]

Mike, you are correct. The call box connects directly to the CO line outside of the building and rides along with the dialtone into the building. It sounds (as I suspected) that I will need to have the door phone vendor split the line and run directly to a vacant CO line. I was just wondering if anyone has ever seen this before and knew of a way to change the CO line settings to try to make it work without having to re-wire the system.