E.123

Shahzad_Ismail — Wed, 17 May 2023 09:14:33 GMT

E.123 is an international standard by the standardization union (ITU-T). It provides guidelines for the presentation of telephone numbers, email addresses, and web addresses in print, on letterheads, and similar purposes.

As described by the ITU, in E.123: "+" is the "International Prefix Symbol" used in a "Telephone number, E.123 international notation". For example:

Telephone number, national notation (full number dialling)	(0607) 123 4567
Telephone number, E.123 international notation	+22 607 123 4567

article E.123 in Glossary

E.123