NAME

       Regexp::Common::URI::tel -- Returns a pattern for telephone URIs.

SYNOPSIS

           use Regexp::Common qw /URI/;

           while (<>) {
               /$RE{URI}{tel}/       and  print "Contains a telephone URI.\n";
           }

DESCRIPTION

   $RE{URI}{tel}
       Returns a pattern that matches tel URIs, as defined by RFC 2806.  Under "{-keep}", the
       following are returned:

       $1  The complete URI.

       $2  The scheme.

       $3  The phone number, including any possible add-ons like ISDN subaddress, a post dial
           part, area specifier, service provider, etc.

   $RE{URI}{tel}{nofuture}
       As above (including what's returned by "{-keep}"), with the exception that future
       extensions are not allowed. Without allowing those future extensions, it becomes much
       easier to check a URI if the correct syntax for post dial, service provider, phone
       context, etc has been used - otherwise the regex could always classify them as a future
       extension.

REFERENCES

       [RFC 1035]
           Mockapetris, P.: DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION.  November 1987.

       [RFC 2396]
           Berners-Lee, Tim, Fielding, R., and Masinter, L.: Uniform Resource Identifiers (URI):
           Generic Syntax. August 1998.

       [RFC 2806]
           Vaha-Sipila, A.: URLs for Telephone Calls. April 2000.

SEE ALSO

       Regexp::Common::URI for other supported URIs.

AUTHOR

       Damian Conway (damian@conway.org)

MAINTENANCE

       This package is maintained by Abigail (regexp-common@abigail.be).

BUGS AND IRRITATIONS

       Bound to be plenty.

LICENSE and COPYRIGHT

       This software is Copyright (c) 2001 - 2017, Damian Conway and Abigail.

       This module is free software, and maybe used under any of the following licenses:

        1) The Perl Artistic License.     See the file COPYRIGHT.AL.
        2) The Perl Artistic License 2.0. See the file COPYRIGHT.AL2.
        3) The BSD License.               See the file COPYRIGHT.BSD.
        4) The MIT License.               See the file COPYRIGHT.MIT.