Itu operational Bulletin

Mexico

To meet these objectives, Mexico began in 1996 to liberalize the telecommunication sector by introducing new long-distance telephony operators. With the same aim in mind, the Comisión Federal de Telecomunicaciones (COFETEL), was set up as a decentralized organ of the Secretaría de Comunicaciones y Transportes, with the primary mission of regulating and promoting the efficient development of telecommunications in Mexico.

The same year also saw the publication of the Basic Technical Numbering Plan, which establishes the bases for the proper management and use of national numbering through the efficient, fair, equitable and non-discriminatory allocation of the available resources. The adoption of this Plan will therefore enable the country to increase its numbering resources, reorganize the way in which numbers are currently allocated, harmonize criteria for the allocation of long-distance codes and comply with the relevant international recommendations.

The Numbering Plan defines, among other things, the structure to be adopted for geographic and non-geographic numbers, the codes to be used for special services and the prefixes for accessing the long-distance service, as well as the dialling procedures to be used for setting up calls within the national territory.

The Comisión Federal de Telecomunicaciones, in the exercise of its powers and responsibilities and aware of the problems that exist in respect of numbering, has resolved to take the necessary steps to ensure that telephone networks comply with the geographic numbering formats laid down in the Basic Technical Numbering Plan, in the interests of ensuring the adequacy of the number stock and thereby fostering healthy competition between local and long-distance telephony providers.

In order to adapt existing local numbers to the said format, the local number (subscriber number, ITU-T Recommendation E.164) has been expanded to seven (7) digits throughout the country, except in the cities of Mexico, Guadalajara and Monterrey, where it has been increased to eight (8) digits.

In order to help users adapt to the change, the number expansion is being effected by attaching the last digits of their region identifier (national destination code, ITU-T Recommen­dation E.164) to the beginning of the local number. This means that the region identifier is now only one digit, i.e. the first digit of the old region identifier, except for the cities of Mexico, Guadalajara and Monterrey, which have no region identifier.

It is important to note that this expansion of the local number does not change the national number, which is formed by the region identifier plus the local number; in other words, the number to be dialled after the long-distance access prefix, or the number to be dialled when calling a Mexican subscriber from another country, remains unchanged.

Once the process of expanding the local number has been completed, the national number will in turn be expanded. To this end, each of Mexico’s local service areas will be allocated a new region identification number (area code) that will need to be dialled before the local number, only in the case of national long-distance and incoming international calls.

We therefore advise that, with effect from 10 November 2001 at 0800 hours UTC, the numbering structure in Mexico will change. The national number will expand from 8 to 10 digits and will comprise the region identification number (area code) and the local number, as shown below:

Country Code (CC)

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opb -> International Telecommunication Union
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opb -> Itu operational Bulletin
opb -> Itu operational Bulletin
opb -> Bulletin d’exploitation de l’uit

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