How We Hacked C5 Trunks for Free Calls (Netherlands 80s) @CallousCoder
How We Hacked C5 Trunks for Free Calls (Netherlands 80s)  @CallousCoder
Uploaded March 2026 | Updated September 2026, 36 minutes ago
In the series hacking in the 80s and 90s in The Netherlands how my friend and I used #phreaking C5 international trunks and made calls for free.

In this video I use a newly written #bluebox for #dtmf and MF tones.
As a #hacker I downloaded Warez (often uncracked and uploaded them cracked again) to the US for free.

This is a little deep dive in how we as teenagers, navigated the international #phone network.

This is strictly a demonstration as these C5 trunks no longer exist.

Code: github.com/rdoetjes/tuts/tree/main/bluebox
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How We Hacked C5 Trunks for Free Calls (Netherlands 80s)

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