Where to buy DCA-540 cable for Siemens c75?

Question

Cables and wires

Friends, there is an ancient Siemens c75 phone, I need a cable for it, I dug up the entire Internet - it is simply not available. Can you tell me where to find it?

Answer 1

For those who dig in the garbage dumps, look for - according to the photo of the connector. Hardly anywhere for sale.
Or take a circuit and make an analog. If a one-time reading is required, then you can poke into contacts with needles.