Help crash into the phone line!

[Mouse]

In general, I want to crash into the telephone line of one company that is engaged in the provision of services. I want to cut myself into a telephone line and intercept customers

 

[CyberGod]

In general, I want to crash into the telephone line of one company that is engaged in the provision of services. I want to cut myself into a telephone line and intercept customers

A fitter's handset or a regular telephone, you connect in parallel and receive calls (the most common paired phone).
In his turbulent youth, he assembled a circuit of two relays and a power supply, crashed into a neighbor's line. When you pick up the phone, the neighbor's phone is supplied with a constant voltage of 40 ... 60V (PBX emulation). When a neighbor picks up the phone, your device is disconnected, the neighbor connects to a real PBX. You can cut the scheme for your tasks.
This scheme will not work on a digital line of the C-32 standard (stretched by Ukrtelecom in the early 2000s)