International Calling Rules

International Calling Rules, Total:243 items.

The international standard classification for "International Calling Rules" includes: .

The Chinese standard classification for "International Calling Rules" includes: .

National Metrological Technical Specifications of the People's Republic of China

JJF 1868-2020 The Rules for Adoption of International Metrological Specifications

International Telecommunication Union (ITU)

ITU-T E.140-1976 Principles for the operation of international telephone services
ITU-T E.140-1980 Principles for the operation of international telephone services
ITU-T E.140-1984 Principles for the operation of international telephone services
ITU-T E.140-1972 Principles for the operation of international telephone services
ITU-T E.140-1988 Principles for the operation of international telephone services
ITU-T D.150-1999 New System for Accounting in International Telephony - Series D: General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3; 21 pp
ITU-T D.140 SUPP 1-2002 SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service Accounting rate principles for the international telephone service Study Group 3; Supplement 1
ITU-T D.140 SUPP 2-2003 Accounting rate principles for the international telephone service; SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service; Supplement 2: Updated teledensities and indicative target set
ITU-T D.140 SUPP 3-2004 Accounting rate principles for the international telephone service; SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service; Supplement 3: Updated teledensities and indicative target set
ITU-T M.565-1988 Access Points for International Telephone Circuits - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV)
ITU-T M.70-1976 Guiding principles on the general maintenance organization for telephone-type international circuits
ITU-T D.151-1989 Old System for Accounting in International Telephony - General Tariff Principles - Charging and Accounting in International Telecommunications Services (Study Group III) 2 pp
ITU-T M.70-1980 Guiding principles on the general maintenance organization for telephone-type international circuits
ITU-T M.70-1984 Guiding principles on the general maintenance organization for telephone-type international circuits
ITU-T E.120 SPANISH-1993 Instructions for Users of the International Telephone Service
ITU-T E.120 FRENCH-1993 INSTRUCTIONS FOR USERS OF THE INTERNATIONAL TELEPHONE SERVICE
ITU-T M.565-1989 Access Points for International Telephone Circuits - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 4 pp
ITU-T E.110 FRENCH-1993 ORGANIZATION OF THE INTERNATIONAL TELEPHONE NETWORK
ITU-T M.70-1988 GUIDING PRINCIPLES ON THE GENERAL MAINTENANCE ORGANIZATION FOR TELEPHONE - TYPE INTERNATIONAL CIRCUITS
ITU-T D.171-1989 Adjustments and Refunds in the International Telephone Service - General Tariff Principles - Charging and Accounting in International Telecommunications Services (Study Group III) 2 pp
ITU-T M.565 SPANISH-1988 ACCESS POINTS FOR INTERNATIONAL TELEPHONE CIRCUITS
ITU-T E.171 FRENCH-1993 INTERNATIONAL TELEPHONE ROUTING PLAN
ITU-T E.502-1980 Forecasting international telephone traffic
ITU-T E.141-1972 Instructions for the international telephone service
ITU-T E.111-1984 Extension of international telephone services
ITU-T E.152-2001 International freephone service
ITU-T E.171 SPANISH-1993 INTERNATIONAL TELEPHONE ROUTING PLAN
ITU-T E.152-1988 International freephone service
ITU-T HDBK IIT-1993 Instructions for the International Telephone Service
ITU-T D.140 AMD 2-2003 Accounting Rate Principles for the International Telephone Service Amendment 2: Revision to Annex E: Series D: General Tariff Principles General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3
ITU-T D.140-2000 Accounting Rate Principles for International Telephone Service Series D: General Tariff Principles General Tariff Principles - Charging and Accounting in the International Telephone Service (Study Group 3)
ITU-T E.141-1993 Instructions for Operators on the Operator-Assisted International Telephone Service - Instructions for the International Telephone Service
ITU-T E.110 SPANISH-1993 Organization of the International Telephone Network
ITU-T E.111-1976 Extension of international telephone services
ITU-T E.502-1976 Forecasting international telephone traffic
ITU-T E.110-1993 Organization of the International Telephone Network
ITU-T E.141-1980 Instructions for the international telephone service
ITU-T E.171/Q.13-1984 International telephone routing plan
ITU-T E.502/Q.82-1972 Forecasting international telephone traffic
ITU-T M.565-1984 Access points for international telephone circuits
ITU-T E.506-1984 Forecasting international telephone traffic
ITU-T E.141-1976 Instructions for the international telephone service
ITU-T E.111-1980 Extension of international telephone services
ITU-T D.115 RUSSIAN-2004 Tariff principles and accounting for the International Freephone Service (IFS)
ITU-T E.111-1972 Extension of international telephone services
ITU-T D.140 FRENCH-2002 SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service Accounting rate principles for the international telephone service Study Group 3
ITU-T E.171/Q.13-1988 International telephone routing plan
ITU-T E.141-1988 Instructions for the international telephone service
ITU-T E.141-1984 Instructions for the international telephone service
ITU-T D.140 SPANISH-2002 SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service Accounting rate principles for the international telephone service Study Group 3
ITU-T D.150 FRENCH-1999 New System for Accounting in International Telephony - Series D: General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3; 21 pp
ITU-T E.171-1993 International Telephone Routing Plan (Study Group II)
ITU-T D.178-1993 Monthly Accounts for Semi-Automatic Telephone Calls (Ordinary and Urgent Calls with or without Special Facilities) - Charging and Accounting in International Telecommunication Services - Drawing up and Exchange of International Telephone and Telex Account
ITU-T M.565 FRENCH-1988 ACCESS POINTS FOR INTERNATIONAL TELEPHONE CIRCUITS
ITU-T M.1230-1984 Assessment of the performance of the international telephone network
ITU-T E.250-1972 New system for accounting in international telephony
ITU-T M.250-1989 Use of CCITT Man-Machine Language (MML) for Maintenance - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 3 pp
ITU-T E.111 SPANISH-1993 EXTENSION OF INTERNATIONAL TELEPHONE SERVICES
ITU-T E.402-1976 Publication by the ITU General Secretariat of the List of international telephone routes
ITU-R F.335-2 SPANISH-1970 USE OF RADIO LINKS IN INTERNATIONAL TELEPHONE CIRCUITS
ITU-T M.70 SPANISH-1988 GUIDING PRINCIPLES ON THE GENERAL MAINTENANCE ORGANIZATION FOR TELEPHONE - TYPE INTERNATIONAL CIRCUITS
ITU-T D.150 SPANISH-1999 New System for Accounting in International Telephony - Series D: General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3; 21 pp
ITU-T E.111 FRENCH-1993 EXTENSION OF INTERNATIONAL TELEPHONE SERVICES
ITU-T D.150 RUSSIAN-1999 New system for accounting in international telephony
ITU-T E.110-1976 Organization of the international telephone network
ITU-T M.70-1989 Guiding Principles on the General Maintenance Organization for Telephone-Type International Circuits - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 2 pp
ITU-T E.111-1993 Extension of International Telephone Services
ITU-T D.150 CHINESE-1999 New system for accounting in international telephony
ITU-T E.110-1984 Organization of the international telephone network
ITU-T E.250-1976 New system for accounting in international telephony
ITU-T E.110-1972 Organization of the international telephone network
ITU-T D.150 ARABIC-1999 New system for accounting in international telephony
ITU-T M.70 FRENCH-1988 GUIDING PRINCIPLES ON THE GENERAL MAINTENANCE ORGANIZATION FOR TELEPHONE - TYPE INTERNATIONAL CIRCUITS
ITU-T D.115 SPANISH-2004 Tariff principles and accounting for the International Freephone Service (IFS) SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service Study Group 3
ITU-T D.140-1995 Accounting Rate Principles for International Telephone Services - Charging and Accounting in International Telecommunication Services (Study Group 3) 8 pp
ITU-T D.150-1996 New System for Accounting in International Telephony - Series D: General Tariff Principles - Charging and Accounting in the International Telephone Service (Study Group 3; 22 pp)
ITU-T E.110-1980 Organization of the international telephone network
ITU-T Q.5-1989 Advantages of Semi-Automatic Service in the International Telephone Service - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 1 pp
ITU-T D.115 FRENCH-2004 Tariff principles and accounting for the International Freephone Service (IFS) SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service Study Group 3
ITU-T E.402-1972 Publication by the I. T .U. General Secretariat of the "List of international telephone routes"
ITU-T D.151 FRENCH-1993 OLD SYSTEM FOR ACCOUNTING IN INTERNATIONAL TELEPHONY
ITU-T E.163/Q.11 bis-1984 Numbering plan for the international telephone service
ITU-T D.115-1996 Tariff Principles and Accounting for the International Freephone Service (IFS) - Series D: General Tariff Principles General Tariff Principles - Charging and Accounting in the International Telephone Service (Study Group 3; 10 pp)
ITU-T D.140-1992 Accounting Rate Principles for International Telephone Services (Study Group III) 6 pp
ITU-T E.201-1972 Charging in automatic international telephone service
ITU-T D.150/E.250-1988 New system for accounting in international telephony
ITU-T D.150/E.250-1980 New system for accounting in international telephony
ITU-T D.150/E.250-1984 New system for accounting in international telephony
ITU-T E.425/Q.64-1972 Inquiries amongst users of the international telephone service
ITU-T D.151 NOTE SPANISH-1990 OLD SYSTEM FOR ACCOUNTING IN INTERNATIONAL TELEPHONY
ITU-T D.140 SUPP 1 FRENCH-2002 SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service Accounting rate principles for the international telephone service Study Group 3; Supplement 1
ITU-T M Suppl. 4.3-1972 Characteristics of leased international telephone-type circuits
ITU-T M.560-1989 International Telephone Circuits - Principles, Definitions and Relative Transmission Levels - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 4 pp
ITU-T M.580-1989 Setting up and Lining up an International Circuit for Public Telephony - - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 15 pp
ITU-T E.123-1984 Notation for national and international telephone numbers
ITU-T D.151 SPANISH-1993 OLD SYSTEM FOR ACCOUNTING IN INTERNATIONAL TELEPHONY
ITU-T E.163/Q.11 bis-1980 Numbering plan for the international telephone service
ITU-T E.201-1976 Charging in automatic international telephone service
ITU-T E.120-1984 Instructions for users of the international telephone service
ITU-T M.1230-1988 Assessment of the performance of the international telephone network
ITU-T D.151-1993 OLD SYSTEM FOR ACCOUNTING IN INTERNATIONAL TELEPHONY
ITU-T E.251-1988 Old system for accounting in international telephony
ITU-T E.125-1984 Inquiries among users of the international telephone service
ITU-T D.151 NOTE-1990 OLD SYSTEM FOR ACCOUNTING IN INTERNATIONAL TELEPHONY
ITU-T E.113-1976 Instructions for users of the international telephone network
ITU-T G.451-1976 Intercontinental radiotelephone systems and use of radio links in international telephone circuits
ITU-T M.605-1989 Routine Maintenance Schedule for International Public Telephony Circuits - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 9 pp
ITU-T D.140 SUPP 1 SPANISH-2002 SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service Accounting rate principles for the international telephone service Study Group 3; Supplement 1
ITU-T E.250 bis-1972 Old system for accounting in international telephony
ITU-T F.50-1988 International public telemessage service
ITU-T E.100-1980 Definitions of terms used in international telephone operation
ITU-T D.155 SPANISH-1996 Guiding Principles Governing the Apportionment of Accounting Rates in Intercontinental Telephone Relations; Series D General Tariff Principles; General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3; 10 pp
ITU-T M.1230-1980 Assessment of the performance of the international telephone network
ITU-T E.125-1980 Inquiries among users of the international telephone service
ITU-T D.155 FRENCH-1996 Guiding Principles Governing the Apportionment of Accounting Rates in Intercontinental Telephone Relations; Series D General Tariff Principles; General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3; 10 pp
ITU-T D.15-1993 GENERAL CHARGING AND ACCOUNTING PRINCIPLES FOR NON-VOICE SERVICES PROVIDED BY INTERWORKING BETWEEN PUBLIC DATA NETWORKS
ITU-T E.120-1993 Instructions for Users of the International Telephone Service
ITU-T E.120-1980 Instructions for users of the international telephone service
ITU-T E.163/Q.11-1988 Numbering plan for the international telephone service
ITU-T E.251-1976 Old system for accounting in international telephony
ITU-T D.150-1989 New System for Accounting in International Telephony - General Tariff Principles - Charging and Accounting in International Telecommunications Services (Study Group III) 12 pp
ITU-T G.611-1972 Intercontinental radiotelephone systems and use of radio links in international telephone circuits
ITU-T G.165-1993 Echo Cancellers Study Group XV; 31 PP
ITU-T D.115-2004 Tariff principles and accounting for the International Freephone Service (IFS) SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service Study Group 3
ITU-T E.100 SPANISH-1993 DEFINITIONS OF TERMS USED IN INTERNATIONAL TELEPHONE OPERATION
ITU-T E.125 FRENCH-1993 INQUIRIES AMONG USERS OF THE INTERNATIONAL TELEPHONE SERVICE
ITU-T M.1230 SPANISH-1996 Method to Improve the Management of Operations and Maintenance Processes in the International Telephone Network - Series M: Maintenance: International Transmission Systems Telephone Circuits Telegraphy Facsimile and Leased Circuits; International Public T
ITU-T M.1230 FRENCH-1996 Method to Improve the Management of Operations and Maintenance Processes in the International Telephone Network - Series M: Maintenance: International Transmission Systems Telephone Circuits Telegraphy Facsimile and Leased Circuits; International Public T
ITU-T E.150-1980 Publication of a "list of international telephone routes"
ITU-T E.150-1988 Publication of a "list of international telephone routes"
ITU-T Q.11-1989 Numbering Plan for the International Telephone Service - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements Study Group XI; 8 pp
ITU-T E.125-1998 Inquiries Among Users of the International Telephone Service
ITU-T E.118-1988 Automated international telephone credit card system
ITU-T G.172 SPANISH-1993 TRANSMISSION PLAN ASPECTS OF INTERNATIONAL CONFERENCE CALLS
ITU-T E.118-1987 Automated international telephone credit card system
ITU-T E.105 FRENCH-1992 International Telephone Service (Study Group I) 8 pp
ITU-T G.172 FRENCH-1993 TRANSMISSION PLAN ASPECTS OF INTERNATIONAL CONFERENCE CALLS
ITU-T E.150-1984 Publication of alist of international telephone route
ITU-T F.85-1972 Rules for international phototelegraph communications to multiple destinations
ITU-T M.710-1989 General Maintenance Organization for the International Automatic and Semi-Automatic Telephone Service - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 8 pp
ITU-T E.105 SPANISH-1992 International Telephone Service (Study Group I) 8 pp
ITU-T E.125 SPANISH-1993 INQUIRIES AMONG USERS OF THE INTERNATIONAL TELEPHONE SERVICE
ITU-T D.140 AMD 2 FRENCH-2003 Accounting Rate Principles for the International Telephone Service Amendment 2: Revision to Annex E: Series D: General Tariff Principles General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3
ITU-T D.140 AMD 2 SPANISH-2003 Accounting Rate Principles for the International Telephone Service Amendment 2: Revision to Annex E: Series D: General Tariff Principles General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3
ITU-T E.141 SPANISH-1993 Instructions for Operators on the Operator-Assisted International Telephone Service - Instructions for the International Telephone Service
ITU-T E.401 FRENCH-1993 STATISTICS FOR THE INTERNATIONAL TELEPHONE SERVICE ( NUMBER OF CIRCUITS IN OPERATION AND VOLUME OF TRAFFIC )
ITU-T D.140 AMD 1 FRENCH-2002 Accounting Rate Principles for the International Telephone Service Amendment 1: New Appendix to Annex C: Guidelines Series D: General Tariff Principles General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group
ITU-T G.192-1996 A Common Digital Parallel Interface for Speech Standardisation Activities - General Characteristics of International Telephone Connections and International Telephone Circuits Study Group 15
ITU-T E.152-2006 International freephone service Study Group 2
ITU-T M.580 FRENCH-1988 Setting up and queuing international public telephone circuits
ITU-T E.141 FRENCH-1993 Instructions for Operators on the Operator-Assisted International Telephone Service - Instructions for the International Telephone Service
ITU-T E.401 SPANISH-1993 STATISTICS FOR THE INTERNATIONAL TELEPHONE SERVICE ( NUMBER OF CIRCUITS IN OPERATION AND VOLUME OF TRAFFIC )
ITU-T D.390 R-1988 Accounting system in the international automatic telephone service
ITU-T E.290 R-1976 Accounting system in the international automatic telephone service
ITU-T E-500 Suppl. 5-1980 Guidance in international telephone network management practices
ITU-T E.105-1992 International Telephone Service (Study Group I) 8 pp
ITU-T D.390 R-1980 Accounting system in the international automatic telephone service
ITU-T E.401-1993 STATISTICS FOR THE INTERNATIONAL TELEPHONE SERVICE ( NUMBER OF CIRCUITS IN OPERATION AND VOLUME OF TRAFFIC )
ITU-T M.1230-1989 Assessment of the Performance of the International Telephone Network - Maintenance of International Telegraph@ Phototelegraph and Leased Circuits - Maintenance of the International Public Telephone Network - Maintenance of Maritime Satellite and Data Tran
ITU-T D.140 AMD 1 SPANISH-2002 Accounting Rate Principles for the International Telephone Service Amendment 1: New Appendix to Annex C: Guidelines Series D: General Tariff Principles General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group
ITU-T D.177-1989 Adjustment of Charges and Refunds in the International Telex Service - General Tariff Principles - Charging and Accounting in International Telecommunications Services Study Group III; 2 pp
ITU-T M.585-1989 Bringing an International Digital Circuit into Service - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 1 pp
ITU-T E.123-1988 Notation for national and international telephone numbers
ITU-T G.136-1999 Application Rules for Automatic Control Devices - Series G: Transmission Systems and Media Digital Systems and Networks International Telephone Connections and Circuits - General Characteristics of the 4-Wire Chain Formed by the International Circuits and
ITU-T D.106-1989 Introduction of Reduced Rates During Periods of Light Traffic in the International Telephone Service - General Tariff Principles - Charging and Accounting in International Telecommunications Services (Study Group III) 2 pp
ITU-T E.401-1976 Statistics for the international telephone service (number of circuits in operation and volume of traffic
ITU-T E.401-1984 Statistics for the international telephone service (number of circuits in operation and volume of traffic)
ITU-T E.401-1972 Statistics for the international telephone service (number of circuits in operation and volume of traffic)
ITU-T D.390 R-1984 Accounting system in the international automatic telephone service
ITU-T D.171-1988 Adjustments and refunds in the international telephone service
ITU-T D.115-1989 Tariff Principles and Accounting for the International Freephone Service (IFS) - General Tariff Principles - Charging and Accounting in International Telecommunications Services (Study Group III) 2 pp
ITU-T D.171 SPANISH-1993 ADJUSTMENTS AND REFUNDS IN THE INTERNATIONAL TELEPHONE SERVICE
ITU-T M.729-1989 Organization of the Maintenance of International Public Switched Telephone Circuits Used for Data Transmission - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 2 pp
ITU-T D.140 SUPP 3 SPANISH-2004 Accounting rate principles for the international telephone service; SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service; Supplement 3: Updated teledensities and indicative target set
ITU-T E.507 SPANISH-1993 MODELS FOR FORECASTING INTERNATIONAL TRAFFIC
ITU-T E.507 FRENCH-1993 MODELS FOR FORECASTING INTERNATIONAL TRAFFIC
ITU-T D.171 FRENCH-1993 ADJUSTMENTS AND REFUNDS IN THE INTERNATIONAL TELEPHONE SERVICE
ITU-T G.451 SPANISH-1993 USE OF RADIO LINKS IN INTERNATIONAL TELEPHONE CIRCUITS
ITU-T E.401-1988 Statistics for the international telephone service (number of circuits in operation and volume of traffic)
ITU-T D.140 SUPP 2 SPANISH-2003 Accounting rate principles for the international telephone service; SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service; Supplement 2: Updated teledensities and indicative target set
ITU-T D.140 SUPP 2 FRENCH-2003 Accounting rate principles for the international telephone service; SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service; Supplement 2: Updated teledensities and indicative target set
ITU-T G.115-1996 MEAN ACTIVE SPEECH LEVEL FOR ANNOUNCEMENTS AND SPEECH SYNTHESIS SYSTEMS Study Group 12
ITU-T M.93-1989 Exchange of Contact Point Information for the Maintenance of International Services and the International Network - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 9 pp
ITU-T G.451-1980 Use of radio links in international telephone circuits
ITU-T D.140 AMD 3-2003 Accounting Rate Principles for the International Telephone Service Amendment 3: Revised Annex A Guidelines for the cost elements to be taken into account when determining accounting rates and accounting rate shares for the international telephone service
ITU-T G.411-1976 Use of radio-relay systems for international telephone circuits
ITU-T G.172-1984 Transmission plan aspects of international conference calls
ITU-T D.140 SUPP 3 FRENCH-2004 Accounting rate principles for the international telephone service; SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service; Supplement 3: Updated teledensities and indicative target set
ITU-T E.507-1993 MODELS FOR FORECASTING INTERNATIONAL TRAFFIC
ITU-T M.580-1988 SETTING UP AND LINING UP AN INTERNATIONAL CIRCUIT FOR PUBLIC TELEPHONY
ITU-T M.150-1976 Routine maintenance schedule for international public telephony circuits
ITU-T M.150-1980 Routine maintenance schedule for international public telephony circuits
ITU-T G.451 FRENCH-1993 USE OF RADIO LINKS IN INTERNATIONAL TELEPHONE CIRCUITS
ITU-T D.116 FRENCH-2004 Charging and Accounting Principles Relating to the Home Country Direct Telephone Service - Series D: General Tariff Principles General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3
ITU-T D.116 SPANISH-2004 Charging and Accounting Principles Relating to the Home Country Direct Telephone Service - Series D: General Tariff Principles General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3
ITU-T E.152 SPANISH-2006 International freephone service Study Group 2
ITU-T G.192 SPANISH-1996 A Common Digital Parallel Interface for Speech Standardisation Activities - General Characteristics of International Telephone Connections and International Telephone Circuits Study Group 15
ITU-T E.422-1976 Observation of international outgoing telephone calls for quality of service
ITU-T M.580-1976 Setting-up and lining-up an international circuit for public telephony
ITU-T M.251 SPANISH-1988 Maintenance Functions to Be Implemented in CCITT-MML - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 29 pp
ITU-T G.411-1984 Use of radio-relay systems for international telephone circuits
ITU-T D.120 FRENCH-1996 Charging and Accounting Principles for the International Telecommunication Charge Card Service - Series D: General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3; 10 pp
ITU-T M.726-1989 Maintenance Organization for the Wholly Digital International Automatic and Semi-Automatic Telephone Service - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 2 pp
ITU-T G.411-1980 Use of radio-relay systems for international telephone circuits
ITU-T E.154-1998 International Shared Cost Service - Series E: Overall Network Operation Telephone Service Service Operation and Human Factors - Operation Numbering Routing and Mobile Services - International Operation - Operation of International Telephone Services Study
ITU-T E.155 AMD 1-2001 International Premium Rate Service Series E: Overall Network Operation Telephone Service Service Operation and Human Factors International Operation - Operation of International Telephone Services Study Group 2
ITU-T G.451-1984 Use of radio links in international telephone circuits
ITU-T G.411-1972 Use of radio-relay systems for international telephone circuits
ITU-T G.451-1988 Use of radio links in international telephone circuits
ITU-T D.101-1989 Charging in Automatic International Telephone Service - General Tariff Principles - Charging and Accounting in International Telecommunications Services (Study Group III; 2 pp; Cancelled)
ITU-T G.192 FRENCH-1996 A Common Digital Parallel Interface for Speech Standardisation Activities - General Characteristics of International Telephone Connections and International Telephone Circuits Study Group 15
ITU-T E.152 FRENCH-2006 International freephone service Study Group 2
ITU-T E.425-1976 Inquiries amongst users of the international telephone service.
ITU-T M.580-1980 Setting up and lining up an international circuit for public telephony
ITU-T D.120-1996 Charging and Accounting Principles for the International Telecommunication Charge Card Service - Series D: General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3; 10 pp
ITU-T M.1010-1976 Constitution and nomenclature of international leased circuits
ITU-T M.251 FRENCH-1988 Maintenance Functions to Be Implemented in CCITT-MML - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 29 pp
ITU-T M.580-1984 Setting up and lining up an international circuit for public telephony
ITU-T M.605 SPANISH-1988 ROUTINE MAINTENANCE SCHEDULE FOR INTERNATIONAL PUBLIC TELEPHONY CIRCUITS
ITU-T E.169.1-2001 Application of Recommendation E.164 Numbering Plan for Universal International Freephone Numbers for International Freephone Service Series E: Overall Network Operation Telephone Service Service Operation and Human Factors International Operation - Number
ITU-T D.120 SPANISH-1996 Charging and Accounting Principles for the International Telecommunication Charge Card Service - Series D: General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3; 10 pp
ITU-T F.108-1988 Operating rules for international phototelegraph calls to multiple destinations
ITU-T E.155 AMD 1 FRENCH-2001 International Premium Rate Service Series E: Overall Network Operation Telephone Service Service Operation and Human Factors International Operation - Operation of International Telephone Services Study Group 2
ITU-T E.155-1998 International Premium Rate Service - Series E: Overall Network Operation Telephone Service Service Operation and Human Factors - Operation Numbering Routing and Mobile Services - International Operation - Operation of International Telephone Services Stud
ITU-T G.451-1993 USE OF RADIO LINKS IN INTERNATIONAL TELEPHONE CIRCUITS
ITU-T D.155-1996 Guiding Principles Governing the Apportionment of Accounting Rates in Intercontinental Telephone Relations; Series D General Tariff Principles; General Tariff Principles - Charging and Accounting in the International Telephone Service Study Group 3; 10 pp
ITU-T M.605 FRENCH-1988 ROUTINE MAINTENANCE SCHEDULE FOR INTERNATIONAL PUBLIC TELEPHONY CIRCUITS
ITU-R F.335-2 FRENCH-1970 USE OF RADIO LINKS IN INTERNATIONAL TELEPHONE CIRCUITS

ITU-T - International Telecommunication Union/ITU Telcommunication Sector

HDBK IIT-1993 Instructions for the International Telephone Service
SERIES G.100 SUPP 29-1993 Planning of Mixed Ananlogue - Digital Circuits (Chains@ Connections) - Transmission Systems and Media - General Characteristics of International Telephone Connections and International Telephone Circuits (Supplement 29)

Standard Association of Australia （SAA）

AS 1852.55:1971 International electrotechnical vocabulary - Telegraphy and telephony
AS C50.55:1971 International Electrotechnical Vocabulary, Part 55: Telegraphy and Telephony

CEPT - Conference Europeenne des Administrations des Postes et des Telecommunications

CEPT T/TPH 24 E-1990 International Telephone Enquiry Service in CEPT Member Countries
CEPT T/N 33-01 E-1987 International Digital Audiographic Teleconferencing
CEPT T/TR 01-01-1982 Interconnexion Internationale A 2048 Kbit/s Pour Le Service Visiophonique Service

Korean Agency for Technology and Standards (KATS)

KS C IEC 60050-722-2020 International Electrotechnical Vocabulary－Chapter 722：Telephony
KS C IEC 60050-722:2020 International Electrotechnical Vocabulary － Chapter 722: Telephony
KS C IEC 60050-722:2009 International Electrotechnical Vocabulary-Chapter 722:Telephony

International Electrotechnical Commission (IEC)

IEC 60050-722:1992 International Electrotechnical Vocabulary: chapter 722: telephony
IEC 60050-55:1970 International Electrotechnical Vocabulary. Part 55 : Telegraphy and telephony
IEC 60050 GROUP 55:1970 International Electrotechnical Vocabulary Group 55: Telegraphy and Telephony (Edition 2.0)

International Code Council

ICC SUPPLEMENT-2004 Supplement to the International Codes

Others: International Coding Rules,International Coding Rules,International Calling Rules,Symbols for national and international phone numbers, emails and web addresses,High Frequency Telephone Rules