The Telecommunications (Licence Modification) (Paging Operator Licences) Regulations 2000

4.5—(a) The Conventions referred to in this Condition will be a set of principles and rules published from time to time by the Director after consultation with Interested Parties who are members of the Telecommunications Numbering and Addressing Body and, if deemed appropriate, with end-users. U.K.

(b) In consulting the said Interested Parties, the Director shall afford a reasonable period, not being less than 28 days, for them to make representations, and he shall take the said representations into account when publishing the Conventions. The Conventions shall govern the specification and application of the Scheme and the Numbering Plan of the Licensee and may also include such other matters relating to the use and management of Numbers as (but not limited to):

(i) criteria and procedures relating to the application for, allocation of and withdrawal of Numbers;

(ii) dialling plans;

(iii) access codes;

(iv) prefixes;

(v) standard ways of recording Numbers for convenience or ease of use, such as the grouping of digits in Numbers in particular lengths;

(vi) methods of enabling end-users to understand the meaning implicit in Numbers or other dialled digits, and in particular the rate at which a call to a particular Number will be chargeable; and

(vii) arrangements for the transfer of Numbers between Operators as a result of Portability.

(c) The Director may from time to time amend or withdraw a Convention already published, after consultation with Interested parties who are members of the Telecommunications Numbering and Addressing Body. The Licensee shall not be required to comply with any such amendment or withdrawal unless the Licensee has been given a reasonable period of notice, such notice not being less than three months. Numbers allocated to the Licensee may only be withdrawn after similar consultation and notice, and the Director shall consult end-users affected by such withdrawal. Subject to overriding national interests, or where there is no alternative solution available, the power to withdraw Numbers shall not apply to any Numbers which the Director has approved from time to time as part of a specific service of the Licensee, which, as a result of investment by the Licensee, has a recognised identity and quality associated with that particular Number and which the Licensee is using and plans to continue to use.