I am still keeping my house analog phone for house alarm and recently it is faulty. TM has came and claim that it is my internal wiring which is having problem, I've checked it seems that although there is voltage around 12v but it stlll it won't establish connection, no ring tone.

Is something like ... nak putus tapi tak putus lagi.

You should have paid him to do new wiring when he was in your house. Wont be expensive .. labour 100rm...material foc from co... and if still dont work, dont pay....tm problem.



This post has been edited by mini orchard: Jul 14 2020, 08:02 AM

the voltage is consistent, i would like to troubleshoot because it is a conceal wiring before resorting to do new wiring.

What voltage are you talking about? As far as I know the phone line voltage is -48V. When your phone is off hook, then the voltage dropped to -9 ~ -12V.

So, if you are talking about phone line voltage, then must be something faulty or switched on that pull the current. The phone line is current driven device. So, the voltage fluctuation is normal depending on what is using the current.

TM analogue line is 48 volts

I am having 2 looping from TM, one goes to ground flr and another to the 1st flr, both having around 12v but funny is that only the ground flr can't be used. But I do observed that there are 4 wires in 1 loop and even though 2 wires which is not connected to the source from TM but yet it still have voltage around 12v!

Bring a phone direct connect it at the incoming if there's a joint outside.

is there any contact that can do a phone line repair since i am trying to safe my phone conceal wire

You can try using new wires to do looping to test it works.

This post has been edited by mini orchard: Jul 15 2020, 06:57 AM

definitely it works because the one that goes to my 1st flr work whereas the one that goes to ground is the one that is not

This post has been edited by gedebe: Jul 15 2020, 09:12 PM

cable tracker and tdr tester might able to help in troubleshooting the twisted pair copper line

https://www.alibaba.com/product-detail/ST20....586a5c3dz890d4