It means that someone has incorrectly formatted an international telephone number. It is never correct to have ++ in a telephone number.
The correct format is +Country City Number, with no punctuation other than the single plus sign and blank spaces to separate groups of digits.
+Country means the country code (one to three digits), preceded by a single plus sign
City means the city code or area code. In most (but not all) cases, you drop the trunk prefix 0 from the domestic code. Also, some countries do not have city codes at all.
Number is the subscriber number.
Examples:
Incorrect format examples:
(Note: all telephone numbers shown are fictitious examples for illustration only.)
Yes, dialling is a variant spelling of dialing. For example, "What telephone number are you dialling?"
STD dialling began in the UK in 1958.
Bransgore is in area code 01425.
90 is the dialling code for Turkey
020 is the telephone dialling code for all of London.
International Subscriber Dialling means that the subscriber can dial an international telephone call directly, without going through an operator.
Switzerland is a country of over 7 million people. I am not sure what you mean by "contact" Switzerland.The international telephone dialling prefix for Switzerland is +41.
Its the country code
0044, then the Scottish number minus its leading zero.
You should call you telephone company, by dialling 411 and ask them to remove you from the telephone directory. This should get your information out of the directory.
880 is the international dialling code for Bangladesh.
In the UK, STD (as in Subscriber Trunk Dialling) came into use gradually in the late 1950s.