Match any numeric telephone number

^\d+$

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Match any dialing

^.+$

This differs from the above match for any numbers as it also includes +, * and # elements that may occur in telephone number.

^[0-9*#]$

This differs from the above match in that is only matches telephone numbers using the numeric digits, * and #.

Match any 7-digit number

^(\d{7})$

This would for example, match the dialing of a local number in the US. The number requires a transform to add the digits for national dialing with the local area code.

Match any 11-digit number beginning with a +1

^\+1(\d{10})$

This would for example, match the dialing of a national number within the US.

Match any 11-digit number beginning with 1555 or 1666

^\+1(555|666)(\d{7})$

This example would match the dialing of national numbers in the US with the area code 555 or 565.