* Every other country's telephone numbering is like one's own.
* Every other country's telephone numbering is like that of EU countries, or like the NANP.
* The last 10 digits are the subscriber number.
* Geographic numbers are actually geographic.
* 123456789 is a perfectly fine number to use for test calls.
* STD is exactly like NPA-NXX.
* The leading 1- in NANP long distance form is the country code.
* There are only national and international forms nowadays.
* Users do not use E.164 themselves.
* Emergency numbers are easy to filter out, as it's only one number.
There are also falsehoods that people believe about telephones, which I would start with:
* When you hear the ringing tone, the other end is already ringing.
* Your ringing tone comes from the other end.
* Every network sends in-band call progress tones.
* It's perfectly fine to use fax over a G.729 'phone.
* DTMF is in-band and universally supported.
* DTMF is out of band and synchronous to media.
* There is only one way that callees reject calls, and it never involves being connected.
* TPC does not need to know the correct physical location of your non-mobile 'phone.
* TPC tracks mobile 'phones through "a GPS chip".
* Calls can only be traced whilst the caller is on the line.
* Caller-ID is unspoofable and works across networks and across countries.
* The callee can always clear calls.
* Only the caller can clear a call.