Obi200 connected to elevator keypad
k9tag:
Thanks for the help guys. You have given me multiple avenues to check out and I will do so before checking back here with the results that I find with my house / system.
One thing that you mention Steve ... to make "darn sure" that the house phone lines are disconnected from the outside world, in my case from ATT. When the previous owner discontinued service, I am sure that ATT disconnected on their end, but inside of the basement, all wires seem connected, and I wasn't going to mess with them for fear of screwing up the "phone wiring loop" - if there is such a thing - inside of the house. What trouble am I asking for if I don't make darn sure the basement lines are disconnected?
SteveInWA:
Quote from: k9tag on August 28, 2017, 08:19:21 pm
Thanks for the help guys. You have given me multiple avenues to check out and I will do so before checking back here with the results that I find with my house / system.
One thing that you mention Steve ... to make "darn sure" that the house phone lines are disconnected from the outside world, in my case from ATT. When the previous owner discontinued service, I am sure that ATT disconnected on their end, but inside of the basement, all wires seem connected, and I wasn't going to mess with them for fear of screwing up the "phone wiring loop" - if there is such a thing - inside of the house. What trouble am I asking for if I don't make darn sure the basement lines are disconnected?
Good question: the problem is: the telco may say that they disconnected service, but they may have simply canceled the service on their end, while leaving their pair of copper wires electrically connected to your house's wiring. That pair of wires may still have 48 volts DC on it, which can (at best) prevent the OBi from working, or (at worst) fry it if a power surge or lightning strike hits their lines. So, if you want to use your home's telephone wiring (i.e. have all the hardwired telephone jacks in the house connected to the OBi's phone signal), then it's important to open that box in the basement, find the pair coming into the box from outside, and physically detach (and insulate with electrical tape and/or wire nuts) those wires. In a single family house (vs. an apartment building), the wires coming from the telco will typically be a heavier gauge, and may be part of a 4-conductor cable with black insulation. The wires going into your house are usually part of an 8-conductor cable (like a Cat-5 or 6 Ethernet cable), and will be in color-coded pairs. Blue + white with blue stripes is line 1, orange + white with orange stripes is line 2, and green + white with green stripes is line 3...
If you have a new house, with some sort of fiber optic or cable service, the wires from the telco's fiber/cable terminal will be connected to your house's telephone demarc box, but it may use the multi-colored cable instead of the ancient telephone wire.
drgeoff:
Perhaps your cellphone, possibly with an app, can generate the acoustic DTMF pair corresponding to the missing * key.
k9tag:
Thanks for the info Steve.
drgeoff ... thanks ...sounds like something out of "Three Days of the Condor", but I will check into it.
azrobert:
You can define any SIP provider using the local interface without adding your OBi200 to OBitalk. You only need OBiTalk to define GV. If you use Simon Telephonics gateway, you won't need OBiTalk.
https://simonics.com/services/
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