The objective of this article is to present the access codes portability (Number Portability), approaching important factors for better understanding of the subject, such as: used technology, faced challenges and strategies of implantation/organization of the system used. Initially, will be presented the rules to be followed for the operators to implement the technology, also verifying the possibility of use of the already available. The different types of existent portability will be mentioned, showing with that, the flexibility that one can have by the implementation of each one of those technologies. Soon after, the ways of calls routing for carried numbers, presenting the different forms of consultations to the existent data bases and, finally, an conclusion on the benefits and effects of the implementation of the numeric portability, as much for users and providers will be presented.
EDUARDO AUGUSTO DIAS FONSECA
(Instituto de Educação Superior de Brasília - IESB)