Telecommunications Numbering Advisory Committee (NAC)

NAC Papers

Paper No.	Topic
3/2010	Survey on Demand of Special Telecommunications Numbers
2/2010	Review of Number Utilisation and Future Number Demand
1/2010	Revision to Numbering Code of Practice Annex
4/2008	Revision to Numbering Code of Practice Annex
3/2008	Arrangement for Return of Numbers
2/2008	Effective Use of Telecommunications Numbers (II)
1/2008	Effective Use of Telecommunications Numbers
1/2007	Number Supply for Telecommunications Services
3/2005	Numbering Arrangements for IP Telephony Services (II)
2/2005	Emergency Routing Codes for IP Telephony Services
1/2005	Numbering Arrangements for IP Telephony Services
8/2004	New Number Level for Mobile Services
7/2004	Number Supply for IP Telephony
6/2004	Report on APT-ITU Joint Workshop on ENUM
5/2004	Assignment of Reclaimed ISPCs
4/2004	Short Codes for Value-added SMS (III)
3/2004	Expanding the Number Supply for Fixed and Mobile Services (III)
2/2004	Short Codes for Value-added SMS (II)
1/2004	Expanding the Number Supply for Fixed and Mobile Services (II)
9/2003	Short Codes for Value-added SMS Services
8/2003	Direct-Dialling-In (DDI) Circuit-to-Number Ratio for IT-based Value-added Services (II)
7/2003	Review of Personal Number Resource
6/2003	Direct-Dialling-In (DDI) Circuit-to-Number Ratio for IT-based Value-added Services
5/2003	Update on ENUM Development
4/2003	Expanding the Number Supply for Fixed and Mobile Services
3/2003	Access Code for Inbound International Telephone Directory Enquiry Service (III)
2/2003	Proposed Deployment of Paging Numbers to Mobile Services
1/2003	Access Code for Inbound International Telephone Directory Enquiry Service (II)
9/2002	Allocation of "17X" Short Codes to Mobile Network Operators and Mobile Virtual Network Operators (II)
8/2002	Access Code for Inbound International Telephone Directory Enquiry Service
7/2002	Circuit-to-number Ratio for Public Non-exclusive Public Telecommunications Services (PNETS)
6/2002	Review of Arrangement for Advising International Organisations, Operating Agencies and Administrations of the Change of Hong Kong Telecommunications Numbering Plan
5/2002	Number Resources for Fixed Telecommunications Network Services (III)
4/2002	Allocation of "17X" Short Codes to Mobile Network Operators and Mobile Virtual Network Operators
3/2002	Number Resources for Fixed Telecommunications Network Services (II)
2/2002	Circuit-to-number Ratio for Public Non-exclusive Telecommunications Services (PNETS)
1/2002	Number Resources for Fixed Telecommunication Network Services
13/2001	Allocation of Numbers and Codes to Mobile Virtual Network Operators (MVNO) (III)
12/2001	Mobile Network Code (MNC) for Tetra System (II)
11/2001	Mobile Network Code (MNC) for Tetra System
10/2001	Availability of Subscribers Numbers to 3G Mobile Services (II)
9/2001	Allocation of Numbers and Codes to Mobile Virtual Network Operators (MVNO) (II)
8/2001	Availability of Subscribers Numbers to 3G Mobile Services
7/2001	Allocation of Numbers and Codes to Mobile Virtual Network Operators (MVNO)
6/2001	Development of ENUM
5/2001	Proposal to Standardize the Presentation Format of the 14-bit Signalling Point Codes in the Hong Kong Numbering Plan
4/2001	Technical Specifications for the Implementation of Operator Number Portability (ONP)
3/2001	Nuisance Calls Caused by Mis-dialling
2/2001	Recent Development of Numbering Arrangements Implemented by the International Telecommunication Union (ITU)
1/2001	Routing and Digit Analysis Arrangement for Paging Numbers
10/2000	Barring of Call Forwarding to Codes and Numbers in the Numbering Plan
9/2000	Circuit-to-number Ratio for Direct Dialling In (DDI) Services
8/2000	Review of Number Utilisation Rate for Fixed Network Services (II)
7/2000	Mis-dialed Calls to Police's "999" Emergency Services Centres (III)
6/2000	Review of Number Utilisation Rates for Fixed Network Services
5/2000	Assignment of "307" Numbers to PNETS Operators by FTNS Operators
4/2000	Assignment of Access Codes to New Operators of Fixed Telecommunication Network Services
3/2000	Review of Mobile Number Utilisation Rate for New Mobile Number Application (III)
2/2000	Assignment of Mobile Network Codes to 3G Mobile Systems and TETRA Systems
1/2000	Mis-dialed Calls to Police's "999" Emergency Services Centres (II)
16/1999	Mis-dialed Calls to Police's "999" Emergency Services Centres
15/1999	Proposal to Establish a Registration Authority for the Assignment of Asynchronous Transfer Mode (ATM) Addresses under the Data Country Code (DCC) Format (II)
14/1999	Assignment of Codes and Numbers to Operators of External Fixed Telecommunication Network Services and Local Wireless Fixed Telecommunication Network Services
13/1999	Review of Mobile Number Utilisation Rate for New Mobile Number Application (II)
12/1999	Emergency Codes for Iridium Mobile Satellite Service in Hong Kong (II)
11/1999	Review of Mobile Number Utilization Rate for New Mobile Number Application
10/1999	Reservation of Special Numbers
9/1999	Assignment of Asynchronous Transfer Mode (ATM) Addresses under the Data Country Code (DCC) Format
8/1999	Reservation of Number Levels in the Numbering Plan for Migration to 9-digit Telephone Numbers
7/1999	Calculation Method of Utilisation Rate of Mobile Numbers after the Launch of Mobile Number Portability (II)
6/1999	The Use of "306X XXXX" Numbers by FTNS Operators for Calling Card Services
5/1999	Assignment of "306" Numbers for IDD-type of Services
4/1999	Reservation of "66X" and "69X" Number Levels for Migration to 9-digit Mobile Numbers
3/1999	Calculation Method of Utilisation Rate of Mobile Numbers after the Launch of Mobile Number Portability
2/1999	Emergency Codes for Iridium Mobile Satellite Services in Hong Kong
1/1999	Transfer of Ported Mobile Numbers
15/1998	Assignment of Access Codes for External Telecommunications Services
14/1998	Allocation of Additional Numbering Resources for Public Mobile Services
13/1998	Assignment of Codes and Numbers for External Service-based Operators
12/1998	Proposed Amendment to Code of Practice Relating to the Use of Numbers and Codes in the Hong Kong Numbering Plan (Cap. 269)
11/1998	Network Number and Network Identifier for Mobile Number Portablity
10/1998	Assignment of "30" Numbers for Public Non-exclusive Telecommunications Services
9/1998	Assignment of Codes and Numbers for External Facilities-based Operators
8/1998	The Use of Paging Numbers by Mobile Operators in Secretarial or Short Messages Services (IV)
7/1998	Review of "300" Numbers for International Value-Added Network Services (IVANS) (II)
6/1998	The Use of Carrier Selection Code in Service Across Networks (III)
5/1998	The Use of Paging Numbers by Mobile Operators in Secretarial or Short Messages Services (III)
4/1998	Review of "300" Numbers for International Value-Added Network Services (IVANS)
3/1998	The Use of Carrier Selection Code in Service Across Networks (II)
2/1998	The Use of Paging Numbers by Mobile Operators in Secretarial or Short Messages Services (II)
1/1998	Adoption of "112" as an Additional Emergency Code in Hong Kong (III)
24/1997	The Use of "12X" and "17X" Codes
23/1997	The Use of Carrier Selection Code in Services across the Network
22/1997	Latest Development of Numbering Issues in the International Telecommunication Union
21/1997	The Use of Paging Numbers by Mobile Operators in Secretarial or Short Messages Services
20/1997	Adoption of "112" as an Additional Emergency Code in Hong Kong (II)
19/1997	Principles of Allocation of Data Network Identification Codes (DNIC) in Hong Kong
18/1997	Adoption of "112" as an Additional Emergency Code in Hong Kong
17/1997	Access Code for Telephone Directory Enquiry Services Operated in Putonghua
16/1997	Proposal from Paging Operators for Lowering Utilisation Rate of Paging Number Blocks
15/1997	Proposal for Extension of Numbering Change for International Information Services
14/1997	Pre-paid SIM Card Services (II)
13/1997	Review of Short Codes and Feature Access Codes used in Mobile Networks (II)
12/1997	Calculation Method of Number Utilisation Rate on Applications from Operators for Additional Number Blocks / Codes (II)
11/1997	Allocation of Short Codes for Time and Temperature Information Services in Hong Kong
10/1997	Proposed Allocation Principles for "18" Short Codes for Services of High Volume of Traffic (II)
9/1997	Pre-paid SIM Card Services
8/1997	Review of Short Codes and Feature Access Codes used in Mobile Networks
7/1997	Calculation Method of Number Utilisation Rate on Applications from Operators for Additional Number Blocks / Codes
6/1997	Proposed Allocation Principles for "18" Short Codes for Services of High Volume of Traffic
5/1997	Implementation of UIFN in Hong Kong
4/1997	Consultative Paper - Allocation of Special Number Blocks for Paging Services
3/1997	Proposed Amendment to Code of Practice relating to the Use of Numbers and Codes in the Hong Kong Numbering Plan (Cap. 269)
2/1997	Implementation of Universal International Freephone Number (UIFN) in Hong Kong
1/1997	Special Numbering Arrangements (II)
15/1996	Summary of Comments Received from NAC Ad-hoc Sub-committee Members on UIFN Access Code and Implementation
14/1996	Assignments of ISPC and SPC to Network Operators in Hong Kong
13/1996	Recent Development of Numbering Issues in the International Telecommunication Union
12/1996	Assignment of Numbers and Codes for Mobile Networks in Hong Kong
11/1996	Non-Central Reference Database (Non-CRD) Configuration for Number Portability Administration Database
10/1996	Arrangement for Advising International Organisations, Operating Agencies and Administrations of the Change of Hong Kong Telecommunications Numbering Plan
9/1996	Universal International Freephone Numbers (UIFN)
8/1996	Comments on NAC Paper No. 4/1996
7/1996	Number Allocation for '800' Freephone Services
6/1996	Special Number Arrangements
5/1996	HKTI's Comments on NAC Paper No. 1/1996
4/1996	Proposed Code of Practice for Assignment of Telecommunications Numbers and Codes
3/1996	Blocking and Unblocking Codes for Possible Use by Calling Number Display Services
2/1996	New Alphanumeric Keypad for Telephone Set
1/1996	Arrangement for Advising International Organisations, Operating Agencies and Administrations of the Change of Hong Kong Telecommunications Numbering Plan