Quote from: pranay on August 10, 2019, 06:04:21 PM
Hi drgoff, thanks a lot for the reply. Yes I have the house phone directly connected to the Obi. The phone I'm using is my apartment buzzcall phone. I have added a splitter on the phone jack on the wall. From the splitter, one line goes to the phone and other goes to the Obi200. It worked perfectly fine on the first day. I've even tried connecting the phone directly into the Obi but I don't get any dial tone anymore.
I tried a factory reset. Now the phone LED is off. The phone port status on the local dashboard of Obi has no values at all. I read somewhere on the forum that these are symptoms of burned out phone port on the Obi device. But if that is the case then I wonder how the phone survived. Could you please guide me how to go about it? I'm completely clueless.
You have learnt the hard way not to connect the PHONE port of an OBi to anything other than a directly plugged in phone or fax machine unless you know exactly what you are doing.
Phones and the equipment they connect to are
not a symmetrical system. Phones require about 50 volts coming in to them on the pair of wires. And when being rung the other equipment is applying about 80 volts AC to those wires. The OBi has circuitry to produce both of those. So does your apartment's buzzcall system. You have joined the two together in the splitter and killed the PHONE port of the OBi.
There is no cure except a new OBi. You are not entitled to a warranty replacement. The Quick Start Guide says:
"Important: Only an analog telephone or fax machine should be connected to the OBi PHONE port. Do not connect a cable from the PHONE port to a telephone jack powered by the phone company. Doing so may cause damage to the OBi electronics."
Get a separate second phone for use with an OBi. Or if the existing buzzcall phone is absolutely ordinary (eg no special button for unlocking remote door) a 2-line phone might work - one line for the OBi and one for buzzcall. I cannot guarantee that as some apartment systems use modified versions of the normal POTS protocols.
And in future remember that for all phone equipment - not just OBis - a splitter is ONLY for connecting more than one instrument to a SINGLE phone line and NEVER for use to combine lines.