telephone number
Click on the red underlined text to get to the source
... This document defines the URI scheme "tel", which describes resources
identified by telephone numbers. A telephone number is a string of
decimal digits that uniquely indicates the network ...
... URI scheme "tel", which describes resources
identified by telephone numbers. A telephone number is a string of
decimal digits that uniquely indicates the network termination point.
...
...
The termination point of the "tel" URI telephone number is not
restricted. It can be in the public telephone network, a private
...
... fax. The URI can refer to resources
identified by a telephone number, including but not limited to
originators or targets of a telephone call ...
... semantics. Furthermore, it does not refer to
a specific physical device, only to a telephone number.
As commonly understood, telephone numbers ...
... telephone number.
As commonly understood, telephone numbers comprise two related but
distinct concepts: a canonical address-of-record and a dial string ...
... Address-of-record or identifier: The telephone number is understood
here as the canonical address-of-record or identifier ...
...
The approach described here has the URI specify the telephone number
as an identifier, which can be either globally unique or only valid ...
... dialling is needed; and what tones indicate call progress. The
dialling application then converts the telephone number into a dial
sequence and performs the necessary signaling actions. The dialer
...
... PSTN
gateway.
To reach a telephone number from a phone on a PBX, for example, the
user of that phone has to know how to convert the telephone number ...
... telephone number from a phone on a PBX, for example, the
user of that phone has to know how to convert the telephone number
identifier into a dial string ...
... identifier into a dial string appropriate for that phone. The
telephone number itself does not convey what needs to be done for a
particular terminal. Instructions may include dialling ...
... phone-context' (section 5.1.5).
Implementations MUST NOT assume that telephone numbers have a
maximum, minimum, or fixed length, or that they always begin with or
contain certain digits.
...
... ITU-T E.123 [E.123] recommends the use of space
characters as visual separators in printed telephone numbers, "tel"
URIs MUST NOT use spaces in visual separators to avoid excessive
...
... The "tel" URI describes a service, reaching a telephone number, that
is independent of the means of doing so, be it via a SIP-to-PSTN
...
... Links using the "tel" URI SHOULD enclose the telephone number so that
users can easily predict the action taken when following the link
...
...
On a public HTML page, the telephone number in the URI SHOULD always
be in the global form, even if the text of the link ...
... 2806(-> 3966prop) [RFC2806] but has been completely
rewritten. This document more clearly distinguishes telephone
numbers as identifiers of network termination points from dial
strings ...
... International Telecommunications Union, "Notation for national and international telephone numbers, e-mail addresses and web addresses", Recommendation E.123, February 2001. ...