National Numbering Plan Strategy Mahmoud Wreikat ITU/CoE- Sunaa Yemen Sept.2004

CONTENTS Numbering Effective Numbering activities Shared Revenue Services Shared cost Services Freephone services What is E.164? Key Elements/ ITU-T Structure E.164 Key Elements Numbering Plan Key Elements/ Guidelines Numbering, Licenses & Laws Function of Numerating Unit Ongoing Joint Responsibilities Unusable numbering capacity Numbering –Principles

Numbering Ensures equal and simple access to the various networks and services

A number (string of decimal digits) uniquely indicates the public network termination point and contains the information to route the call to this termination point at national or international level (with country code). The National Numbering Plan is the set of numbers identifying any termination points of fixed or mobiles networks and telephony services, used for routing calls, or access to the external resources. The National Numbering Plan is a part of the worldwide numbering plan (E 164). Gov draws up and manages the National Numbering Plan (ITU - the worldwide numbering plan). There are others plans dealing with addressing (IP addresses, DNS, etc.). Numbering

Effective Numbering activities- 1 : Gov. pursues its numbering activities in connection at the international level. A consultative numbering committee, chaired by Gov, serves as a forum for all sector participants affected by numbering issues: operators, service providers, manufacturers, users, etc. Gov adopted rules defining the actual procedures for reservation, allocation, control, abrogation, publication, etc.

Effective Numbering activities- 2 : Gov allocates, on a case-by-case basis, the resources (prefixes, numbers and numbering ranges) required to ensure fair competition between network operators; The conditions under which these numbering resources may be used are fixed, either in the operator's schedule of conditions or in the decision transmitted to the operator by Gov. The operators may pay a fee which covers the cost of managing the numbering plan and monitoring its use.

Effective Numbering activities- 3 : Gov draw up and manages the National Numbering plan: –principle of long-distance carrier selection using a single digit or a four- digit prefix. –definition of non-geographic numbers to identify service categories by the tariff charged to the caller : freephone numbers, shared cost numbers and shared revenue numbers. –Freephone numbers are free of charge for the caller. –Shared cost numbers, the cost is divided between the called and calling parties. –Shared cost numbers, the called party is reimbursed by the telecommunications service provider. –opening up the 0XXX numbering range for Internet dial-up access.

Shared Revenue Services Code = (0)900 Called Party Calling Party Revenue = XCharge = 100+X   Network Conveyance Charge = 100 Network

Shared cost Services Code (0)800 Called Party Calling Party Charge = 50Charge = 50   Network Conveyance Charge = 100 Network

Freephone services Code = (0)800   Network Conveyance Charge = 100 Network Called Party Calling Party Charge = 100 Charge = Free

Numbering plan for the existing network Operator responsible for numbering New operators need new numbers Conflict of interest Need for independent administration Before liberalization

What is E.164? ITU-T Recommendation E.164: “The international public telecommunication numbering plan” –Tied to treaty obligations (specific roles and obligations defined for ITU Member States and TSB Director) –Defines number structure and functionality for four principal categories of numbers: Geographic Areas Global Services Networks Groups of Countries (“GoCs”)

Examples of E.164 Resources Geographic areas –ITU Member States, including integrated numbering plan involving more than one (e.g., +1) Global Services –e.g., Universal International Freephone Numbers (+800) Networks –Global Mobile Systems ( digit IC) –Shared code for Networks ( digit IC) Groups of Countries –e.g., ETNS

Related to E.164 ITU-T Recommendation E.164.1: Criteria and procedures for the reservation, assignment and reclamation of E.164 country codes and associated Identification Codes (ICs); ITU-T Recommendation E.164.2: E.164 numbering resources for trials (to be published); Determined Recommendation E.164.3: Principles, criteria and procedures for the assignment and reclamation of E.164 country codes and associated identification codes for Groups of Countries (determined at January 2001 meeting of SG2); ITU-T Recommendation E.190: Principles and responsibilities for the management, assignment and reclamation of E-series international numbering resources; E.195: ITU-T International numbering resource administration

Format:- 00 +CC+ NSN (CC +NSN must not exceed 15 characters) NSN definition: NDC + SN NDC=Area Code SN= Subscriber Number (for local dialling) Key Elements/ ITU-T Structure E.164

Format:- 00 +CC+ NSN (CC +NSN must not exceed 15 characters) NSN definition: NDC + SN NDC=Area Code 1 SN= Subscriber Number (for local dialling) Key Elements/ ITU-T Structure E.164

Key Elements Numbering Plan Existing structure of Numbering Plan maintained PrefixDesignation 00International Code Mobile Services 08Special Services (Free Phone, Fixed Cost and Shared Cost) 09Premium Rate Services (PRS)

Key Elements/ Guidelines- 1 Implementation principles Description of the Gov Numbering Database Who can apply for numbers? Reserving numbers or codes Assessment of applications

Key Elements/ Guidelines- 2 Response times and publicity Conditions placed on allocations Withdrawal of reservations and allocations Appeals procedure Annual report, audit and long range forecasts

Primary legislation on telecommunications A license for the existing network operator License condition on numbering Review of existing Numbering Plan Update of Numbering Plan Move to independent administration. Numbering, Licenses & Laws

Set-up and maintain the data base Filter and process applications Make reservations and allocations Publication current status details- –Designated codes and number ranges –Reservation (service details confidential) –Allocation with planned in service dates. Function of Numerating Unit

Maintain accurate statues records Measure utilization Prepare 5-year forecasts of demand Conserve capacity where necessary Identify and solve potential shortages Publication annual report on numbering Periodic review and update of plan Ongoing Joint Responsibilities

10% - Digit 0 – National dialing prefix 10% - Digit 1xx(x) – Short code access 10% - Digit Y – Reserved for expansion 10% - Protected after previous use Balance = 60% Also – local network structure may use some number-blocks better than others Unusable numbering capacity

Conformance with International Recommendations of ITU-T Numbering Plan - longevity Clear and understandable Capable of expansion for new operators Reflect services and location Be innovative Neutral as regards competition Objective and non-discriminatory Numbering –Principles

Thank You References and resources – – Mahmoud Wreikat