lpbkdotnet, 3 months ago to random

My new bedtime reading has arrived…

In the UK, AC13 telephone signalling used pulses of 2280Hz to represent the digits of a dialled phone number, call progress state etc.

This training document from 1983 was pretty late in the lifespan of in-band signalling like this, which had been around for 20+ years by this point.

It’ll be fun reading this from a “what would it do if I poked $thing at $time” point of view

#telephoneHistory #telecomHistory #telephone #telecoms #phreak #phreaking #phones

lpbkdotnet, 3 months ago to random

This is extremely silly.

I have a Nokia 105 #phone. No data or apps. Just a plain, dumb, mobile phone

Using a sim from aa.net.uk I've connect it to the C*Net VoIP network https://ckts.info

It's accessible on a CNet number, and can place calls just like any other phone on CNet!

Do I need this?
No.

Can it make normal calls?
Absolutely not!

Is it useful?
Not in the slightest.

Is it cool as heck?
Absolutely!

I'll make a demo video later…

#phreak #telephoneHistory #telephoneHeritage

lpbkdotnet, 5 months ago to random

This christmas tree made from a telephone cable was an exhibit at the “Young People's Exhibition”, Imperial Institute, London, 29 December 1936

The cable dates from before PVC insulation was widespread. Each wire was individually insulated with paper, and the whole cable was covered in a lead sheath.

Arranged in “pairs” there are 6024 wires in total.

Photo from BT Archives, finding No TCB 417/E 9977

#telephone #phone #telephoneExchange #telecom #telecomHistory #telephoneHistory

DialupDownload, 8 months ago to history

Fun claim via a Facebook short video - How Delta Airlines gamed AT&T billing in the 60s

https://www.facebook.com/reel/239632082224297?fs=e&s=TIeQ9V&mibextid=0NULKw

#telephonehistory #history #techhistory