URL Scheme for Phone Call

Question

Much like the \"mailto\" URL prefix launches the user\'s default mail program and starts a new email with specified address, is there a similar URL scheme that would initiat

Answer 1

The official standard for providing a telephone number as a URI is here: http://www.ietf.org/rfc/rfc3966.txt

It basically says use tel: as the prefix, and start the number with +[international dialling code] before the number itself. You can put non-numeric characters as separators (e.g. -) but they must be ignored. So a London (UK) number might be:

tel:+44-20-8123-4567

A New York (US) number:

tel:+1-212-555-1234