Dvr Intelbras

[Nella Mcnairy]

Higuys, for many years I and my friends (who help traditional communities set up their community networks) have dreamed of supporting the intelbras equipment that is widely available in Brazil as ISPs are increasingly abandoning this equipment to use fiber.

It's the first time I've tried this and I've been studying for a long time about how to do it and now I've got the courage to write here.

hey @blinkstar88 thanks for your answer, I don't have access to u-boot.

In this bash that I have access to I can get the file by wget by setting up an http server on my machine. Would I be able to write with mtd write the initramfs image?

I haven't had the courage to desolder the flash yet, so I've pursued this goal of trying to reverse engineer the manufacturer's firmware to find some hint on how to interrupt boot to access U-Boot.

Some things I tried:

hey @blinkstar88 thank you for your advice,

I solved it by installing sasquatch, I had to fix some things in the code and was able to compile and it worked fine with binwalk.

i had access to a new folder (squashfs-root-0) now and i think it is everything that is inside the manufacturer's firmware

Your setup is very unusual. Normally, the FXO would be set up as a trunk in FreePBX, with an Outbound Route that sends the range of extension numbers used by the remote system to the Intelbras trunk. There would be no need for any custom dial plan.

Thanks by the directions. I will test. The voice qualidy is perfect. No noise.

But looking your coments, could be the dtmf.

Do you have any example of the configuration/connection of the FXO as a trunk in the intelbras ?

Can I send the HT confirmation in the end of the fxo diaplan belo ?

Do you have a butt set or other means of listening on the analog line to hear what the HT is doing?

en.wikipedia.org Lineman's handsetA lineman's handset is a special type of telephone used by technicians for installing and testing local loop telephone lines. It is also called a test set, butt set, or buttinski. A typical lineman's handset integrates an earpiece, a mouthpiece, a dialing interface, and a set of test leads for connecting to the telephone circuit. Originally, lineman's handsets featured a rotary dial, but modern sets use some variant of the standard 12-button DTMF keypad and also employ an amplifier for speaker...

My memories of Brasil is everything is taxed at 200% or more, an even cheaper butt set is a 3.5mm stereo ear bud , use the tip (left channel) and body/sleeve ( ground) not any of the rings (right and microphone) . They are usually a couple hundred ohms so not too disruptive.

I magically solved my problem. When I put a capacitor in seri with an audio transformer to try to listen to dtmf, everything started to work. Probably some impedance or resistance problem. Now all calls work perfectly. If I take the transformer, the problem comes back. I would add that it was just impedance differences. Thank you very much for the tips.

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