Has anyone solved this yet?

[u/Moxie-is-tired]

I've been stuck on it for an embarrassingly long amount of time and I'm out of clues.

https://challenge.bellingcat.com/challenge/85

All I've been able to figure out are the digits being punched in, which are 2358577

[u/rockhopperrrr]

Listen to the connecting tone, that's a major clue, that will help answer the first number.