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The Number Portability Administration Center ( NPAC) is a function of the Federal Communications Commission (FCC) in the United States. It administers the routing of telephone calls and text messages (SMS) for the telecommunications industry and its customers in the regions of the North American Numbering Plan. [1]
The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the well ...
Overview. Mobile number portability is implemented in varying ways across the globe. The international and European standard implements "recipient-led" porting, in which a customer wishing to port a telephone number contacts the new network (recipient), which sends the number portability request (NPR) to the current network operator (donor).
Porting Authorisation Code. Porting Authorization Code ( PAC) is a unique identifier (normally 9 characters long and in the format "ABC123456") used by some mobile network operators to facilitate mobile number portability (MNP). This allows users to retain their mobile telephone number when switching operators.
Local number portability (LNP) for fixed lines, and full mobile number portability (FMNP) for mobile phone lines, refers to the ability of a "customer of record" of an existing fixed-line or mobile telephone number assigned by a local exchange carrier (LEC) to reassign the number to another carrier ("service provider portability"), move it to another location ("geographic portability"), or ...
Where B is the dialing zone (where the number is located), Y is 2 to 8 (or 9 for pay phones), [failed verification] and X is any digit. Each department belongs to only one dialing zone. Calls from landlines to both landline and mobile numbers are placed by dialing the 10-digit subscriber number with no prefix.
For example, on September 11, persons in the New York City Police Department (NYPD) 9-1-1 center told callers from the World Trade Center to remain in place and wait for instruction from firefighters and police officers. This was the plan for managing a fire incident in the building and the 9-1-1 center staff were following the plan.
As of August 2011, the Creative Commons licenses had been ported to over 50 different jurisdictions worldwide. No new ports have been implemented in version 4.0 of the license, [4] which was released on 25 November 2013. [5] Version 4.0 discourages the use of ported versions, and instead acts as a single global license, [6] which can be used ...