service provider
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... Telephone Network (GSTN). There
are considered to be three types of number portability (NP): service
provider number portability (SPNP), location portability (not to be
confused with terminal mobility), and service ...
... switch, and specific line of the called party. As such,
without NP a subscriber wishing to change service providers would
incur a number change as a consequence of being served off of a
different end-office switch ...
... incur a number change as a consequence of being served off of a
different end-office switch operated by the new service provider.
The impact in cost and convenience to the subscriber of changing
...
... Session Initiation Protocol
SMR Special Mobile Radio
SPNP Service Provider Number Portability
SRF Signaling Relaying Function
...
... GSTN to
keep their phone numbers when they change their service providers or
subscribed services, or when they move to a new location.
...
... services, or when they move to a new location.
The ability to change the service provider while keeping the same
phone number is called service provider ...
... service provider while keeping the same
phone number is called service provider portability (SPNP), also
known as "operator portability."
...
... remove the
donor network or old service provider from the call or signaling path
altogether. Often the distinction between interim and true NP is a
...
... Service Provider Number Portability Schemes ...
...
Four schemes can be used to support service provider portability and
are briefly described below. But first, some further terms are
introduced.
...
... subscriber, out of a number
range administratively (e.g., +1 202-533) assigned to it. The
current service provider (new SP), or new serving network, is the
...
... ports around, the donor network is always the same for any particular
TN based on the service provider to whom the subtending number range
was administratively assigned. See the discussion ...
... wireless switches have the choice of using (a), (b),
(d), or (e). In the United States, service provider portability will
be supported by both the wireline and wireless ...
... wireless boundary. However, this is not true in Europe
where service provider portability is usually supported only within
the wireline or wireless ...
... wireless directory numbers. The term "Mobile Number Portability
(MNP)" is used for the support of service provider portability by the
GSM networks ...
... registrar, and the third level is the provision of service specific
data from the service provider itself. NP certainly must be
considered at the first level because the telephony service providers
...
... ITU-T Q-series Recommendations - Supplement 4, "Number portability Capability set 1 requirements for service provider portability (All call query and onward routing)," May 1998. ...
... ITU-T Q-series Recommendations - Supplement 5, "Number portability -Capability set 2 requirements for service provider portability (Query on release and Dropback)," March 1999. ...