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A key technical aspect of Mobile Number Portability (MNP) involves the routing of calls or mobile messages (SMS, MMS) to a number once it has been ported. Various call routing implementations exist globally, but the International and European best practice employs a central database (CDB) of ported numbers. Network operators replicate the CDB ...
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 ...
The new merchant ship radio call letters went into effect on June 30, 1912. Ships were divided into two geographical groups, with three-letter calls starting with "K" assigned to ships on the "Atlantic and Gulf Coasts", and calls starting with "W" assigned to the "Pacific Coast" vessels. [27]
A call could be routed to one of multiple locations based on the call origin, load balancing between multiple call centers, times, or days. While this data was originally maintained by telephone companies, the breakup of the Bell System in the 1980s and the introduction of toll-free number portability in 1993 required an independent operator to ...
Customer proprietary network information (CPNI) is the data collected by telecommunications companies about a consumer's telephone calls. [1] It includes the time, date, duration and destination number of each call, the type of network a consumer subscribes to, and certain other information that appears on the consumer's telephone bill.
Location routing number. A location routing number ( LRN) is an identification for a telephone switch for the purpose of routing telephone calls through the public switched telephone network (PSTN) in the United States. This identification has the format of a telephone number, in accordance with the North American Numbering Plan (NANP).
For a local call, the operator inserted the front cord of the pair (ringing cord) into the called party's local jack and started the ringing cycle. For a long-distance call, the operator plugged into a trunk circuit to connect to another operator in another bank of boards or at a remote central office. In 1918, the average time to complete the ...