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				|  | 2005-2008 ITU-T SG 2 Recommendations | 
 |  |  | E series	: Overall network operation, telephone service, service operation and human factors | 
 |  |  |  | E100-E229	: International operation | 
 |  |  |  |  | E100-E103	: Definitions | 
 |  |  |  |  |  | E.100	: Definitions of terms used in international telephone operation | 
 |  |  |  |  |  | E.101 (draft)	: Definitions of terms used for identifiers (names, numbers, addresses and other identifiers) for public telecommunication services and networks in the E-series Recommendations | 
 |  |  |  |  | E104-E119	: General provisions concerning Administrations | 
 |  |  |  |  |  | E.105	: International telephone service | 
 |  |  |  |  |  | E.106	: International Emergency Preference Scheme (IEPS) for disaster relief operations | 
 |  |  |  |  |  | E.107	: Emergency Telecommunications Service (ETS) and interconnection framework for national implementations of ETS | 
 |  |  |  |  |  | E.109	: International billed number screening procedures for collect and third-party calling | 
 |  |  |  |  |  | E.110	: Organization of the international telephone network | 
 |  |  |  |  |  | E.111	: Extension of international telephone services | 
 |  |  |  |  |  | E.112	: Arrangements to be made for controlling the telephone services between two countries | 
 |  |  |  |  |  | E.113	: Validation procedures for the international telecommunications charge card service | 
 |  |  |  |  |  | E.114	: Supply of lists of subscribers (directories and other means) | 
 |  |  |  |  |  | E.116	: International telecommunication charge card service | 
 |  |  |  |  |  | E.117	: Terminal devices used in connection with the public telephone service (other than telephones) | 
 |  |  |  |  |  | E.118	: The international telecommunication charge card | 
 |  |  |  |  | E120-E139	: General provisions concerning users | 
 |  |  |  |  |  | E.120	: Instructions for users of the international telephone service | 
 |  |  |  |  |  | E.121	: Pictograms, symbols and icons to assist users of the telephone and telefax services | 
 |  |  |  |  |  | E.122	: Measures to reduce customer difficulties in the international telephone service | 
 |  |  |  |  |  | E.123	: Notation for national and international telephone numbers, e-mail addresses and web addresses | 
 |  |  |  |  |  | E.124	: Discouragement of frivolous international calling to unassigned or vacant numbers answered by recorded announcements without charge | 
 |  |  |  |  |  | E.125	: Inquiries among users of the international telephone service | 
 |  |  |  |  |  | E.126	: Harmonization of the general information pages of the telephone directories published by Administrations | 
 |  |  |  |  |  | E.127	: Pages in the telephone directory intended for foreign visitors | 
 |  |  |  |  |  | E.128	: Leaflet to be distributed to foreign visitors | 
 |  |  |  |  |  | E.129	: Presentation of national numbering plans | 
 |  |  |  |  |  | E.130	: Choice of the most useful and desirable supplementary telephone services | 
 |  |  |  |  |  | E.131	: Subscriber control procedures for supplementary telephone services | 
 |  |  |  |  |  | E.132	: Standardization of elements of control procedures for supplementary telephone services | 
 |  |  |  |  |  | E.133	: Operating procedures for cardphones | 
 |  |  |  |  |  | E.134	: Human factors aspects of public terminals: Generic operating procedures | 
 |  |  |  |  |  | E.135	: Human factors aspects of public telecommunication terminals for people with disabilities | 
 |  |  |  |  |  | E.136	: Specification of a tactile identifier for use with telecommunication cards | 
 |  |  |  |  |  | E.137	: User instructions for payphones | 
 |  |  |  |  |  | E.138	: Human factors aspects of public telephones to improve their usability for older people | 
 |  |  |  |  | E140-E159	: Operation of international telephone services | 
 |  |  |  |  |  | E.140	: Operator-assisted telephone service | 
 |  |  |  |  |  | E.148	: Routing of traffic by automatic transit exchanges | 
 |  |  |  |  |  | E.149	: Presentation of routing data | 
 |  |  |  |  |  | E.151	: Telephone conference calls | 
 |  |  |  |  |  | E.152	: International freephone service | 
 |  |  |  |  |  | E.153	: Home country direct | 
 |  |  |  |  |  | E.154	: International Shared Cost Service | 
 |  |  |  |  |  | E.155	: International Premium Rate Service | 
 |  |  |  |  |  | E.156	: Guidelines for ITU-T action on reported misuse of E.164 number resources | 
 |  |  |  |  |  | E.157 (draft)	: International calling party number delivery | 
 |  |  |  |  | E160-E169	: Numbering plan of the international telephone service | 
 |  |  |  |  |  | E.161	: Arrangement of digits, letters and symbols on telephones and other devices that can be used for gaining access to a telephone network | 
 |  |  |  |  |  | E.161.1 (draft)	: Guidelines to select Emergency Number for public telecommunications networks | 
 |  |  |  |  |  | E.164.1	: Criteria and procedures for the reservation, assignment and reclamation of E.164 country codes and associated identification codes (ICs) | 
 |  |  |  |  |  | E.164.2	: E.164 numbering resources for trials | 
 |  |  |  |  |  | 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 | 
 |  |  |  |  |  | E.165/Q.11 ter	: Timetable for coordinated implementation of the full capability of the numbering plan for the ISDN era (Recommendation E.164) | 
 |  |  |  |  |  | E.165.1	: Use of escape code "0" within the E.164 numbering plan during the transition period to implementation of NPI mechanism | 
 |  |  |  |  |  | E.166/X.122	: Numbering plan interworking for the E.164 and X.121 numbering plans | 
 |  |  |  |  |  | E.167	: ISDN Network Identification Codes | 
 |  |  |  |  |  | E.168	: Application of E.164 numbering plan for UPT | 
 |  |  |  |  |  | E.168.1	: Assignment procedures for universal personal telecommunications (UPT) numbers in the provisioning of the international UPT service | 
 |  |  |  |  |  | E.169	: Application of Recommendation E.164 numbering plan for universal international numbers for international telecommunications services using country codes for global services | 
 |  |  |  |  |  | E.169.1	: Application of Recommendation E.164 numbering plan for universal international freephone numbers for international freephone service | 
 |  |  |  |  |  | E.169.2	: Application of Recommendation E.164 numbering plan for universal international premium rate numbers for the international premium rate service | 
 |  |  |  |  |  | E.169.3	: Application of Recommendation E.164 numbering plan for universal international shared cost numbers for international shared cost service | 
 |  |  |  |  | E170-E179	: International routing plan | 
 |  |  |  |  |  | E.172	: ISDN routing plan | 
 |  |  |  |  |  | E.173	: Routing plan for interconnection between public land mobile networks and fixed terminal networks | 
 |  |  |  |  |  | E.174	: Routing principles and guidance for Universal Personal Telecommunications (UPT) | 
 |  |  |  |  |  | E.175	: Models for international network planning | 
 |  |  |  |  | E180-E189	: Tones in national signalling systems | 
 |  |  |  |  |  | E.180/Q.35	: Technical characteristics of tones for the telephone service | 
 |  |  |  |  |  | E.181	: Customer recognition of foreign tones | 
 |  |  |  |  |  | E.182	: Application of tones and recorded announcements in telephone services | 
 |  |  |  |  |  | E.183	: Guiding principles for telephone announcements | 
 |  |  |  |  |  | E.184	: Indications to users of ISDN terminals | 
 |  |  |  |  | E190-E199	: Numbering plan of the international telephone service | 
 |  |  |  |  |  | E.190	: Principles and responsibilities for the management, assignment and reclamation of E-series international numbering resources | 
 |  |  |  |  |  | E.191	: B-ISDN addressing | 
 |  |  |  |  |  | E.191.1	: Criteria and procedures for the allocation of ITU-T International Network Designator addresses | 
 |  |  |  |  |  | E.193	: E.164 country code expansion | 
 |  |  |  |  |  | E.195	: ITU-T International numbering resource administration | 
 |  |  |  |  | E200-E229	: Maritime mobile service and public land mobile service | 
 |  |  |  |  |  | E.202	: Network operational principles for future public mobile systems and services | 
 |  |  |  |  |  | E.210/F.120	: Ship station identification for VHF/UHF and maritime mobile-satellite services | 
 |  |  |  |  |  | E.212	: The international identification plan for public networks and subscriptions | 
 |  |  |  |  |  | E.213	: Telephone and ISDN numbering plan for land mobile stations in public land mobile networks (PLMN) | 
 |  |  |  |  |  | E.214	: Structure of the land mobile global title for the signalling connection control part (SCCP) | 
 |  |  |  |  |  | E.217	: Maritime communications  Ship station identity | 
 |  |  |  |  |  | E.218	: Management of the allocation of terrestrial trunk radio Mobile Country Codes | 
 |  |  |  |  |  | E.220	: Interconnection of public land mobile networks (PLMN) | 
 |  |  |  | E230-E299	: Operational provisions relating to charging and accounting in the international telephone service | 
 |  |  |  |  | E230-E249	: Charging in the international telephone service | 
 |  |  |  |  |  | E.230	: Chargeable duration of calls | 
 |  |  |  |  | E260-E269	: Measuring and recording call durations for accounting purposes | 
 |  |  |  |  |  | E.260	: Basic technical problems concerning the measurement and recording of call durations | 
 |  |  |  |  |  | E.261	: Devices for measuring and recording call durations | 
 |  |  |  | E300-E329	: Utilization of the international telephone network for non-telephony applications | 
 |  |  |  |  | E300-E319	: General | 
 |  |  |  |  |  | E.300	: Special uses of circuits normally employed for automatic telephone traffic | 
 |  |  |  |  |  | E.301	: Impact of non-voice applications on the telephone network | 
 |  |  |  |  | E320-E329	: Phototelegraphy | 
 |  |  |  |  |  | E.320	: Speeding up the establishment and clearing of phototelegraph calls | 
 |  |  |  |  |  | E.323/F.107	: Rules for phototelegraph calls established over circuits normally used for telephone traffic | 
 |  |  |  | E330-E349	: ISDN provisions concerning users | 
 |  |  |  |  |  | E.330	: User control of ISDN-supported services | 
 |  |  |  |  |  | E.331	: Minimum user-terminal interface for a human user entering address information into an ISDN terminal | 
 |  |  |  | E350-E399	: International routing plan | 
 |  |  |  |  |  | E.350	: Dynamic routing interworking | 
 |  |  |  |  |  | E.351	: Routing of multimedia connections across TDM-, ATM- and IP-based networks | 
 |  |  |  |  |  | E.352	: Routing guidelines for efficient routing methods | 
 |  |  |  |  |  | E.353	: Routing of calls when using international network routing addresses | 
 |  |  |  |  |  | E.360.1	: Framework for QoS routing and related traffic engineering methods for IP-, ATM-, and TDM-based multiservice networks | 
 |  |  |  |  |  | E.360.2	: QoS routing and related traffic engineering methods  Call routing and connection routing methods | 
 |  |  |  |  |  | E.360.3	: QoS routing and related traffic engineering methods  QoS resource management methods | 
 |  |  |  |  |  | E.360.4	: QoS routing and related traffic engineering methods  Routing table management methods and requirements | 
 |  |  |  |  |  | E.360.5	: QoS routing and related traffic engineering methods  Transport routing methods | 
 |  |  |  |  |  | E.360.6	: QoS routing and related traffic engineering methods  Capacity management methods | 
 |  |  |  |  |  | E.360.7	: QoS routing and related traffic engineering methods  Traffic engineering operational requirements | 
 |  |  |  |  |  | E.361	: QoS routing support for interworking of QoS service classes across routing technologies | 
 |  |  |  |  |  | E.370	: Service principles when public circuit-switched international telecommunication networks interwork with IP-based networks | 
 |  |  |  | E400-E489	: Network management | 
 |  |  |  |  | E400-E404	: International service statistics | 
 |  |  |  |  |  | E.401	: Statistics for the international telephone service (number of circuits in operation and volume of traffic) | 
 |  |  |  |  | E405-E419	: International network management | 
 |  |  |  |  |  | E.408	: Telecommunication networks security requirements | 
 |  |  |  |  |  | E.410	: International network management  General information | 
 |  |  |  |  |  | E.411	: International network management  Operational guidance | 
 |  |  |  |  |  | E.412	: Network management controls | 
 |  |  |  |  |  | E.412.1	: Assessing the impact of resource discontinuity in transport networks on service availability | 
 |  |  |  |  |  | E.413	: International network management  Planning | 
 |  |  |  |  |  | E.414	: International network management  Organization | 
 |  |  |  |  |  | E.415	: International network management guidance for common channel signalling system No. 7 | 
 |  |  |  |  |  | E.416	: Network management principles and functions for B-ISDN traffic | 
 |  |  |  |  |  | E.417	: Framework for the network management of IP-based networks | 
 |  |  |  |  |  | E.418	: Framework for network management of IMT-2000 networks | 
 |  |  |  |  |  | E.419	: Business oriented Key Performance Indicators for management of networks and services | 
 |  |  |  |  | E420-E489	: Checking the quality of the international telephone service | 
 |  |  |  |  |  | E.420	: Checking the quality of the international telephone service  General considerations | 
 |  |  |  |  |  | E.421	: Service quality observations on a statistical basis | 
 |  |  |  |  |  | E.422	: Observations on international outgoing telephone calls for quality of service | 
 |  |  |  |  |  | E.423	: Observations on traffic set up by operators | 
 |  |  |  |  |  | E.425	: Internal automatic observations | 
 |  |  |  |  |  | E.426	: General guide to the percentage of effective attempts which should be observed for international telephone calls | 
 |  |  |  |  |  | E.427	: Collection and statistical analysis of special quality of service observation data for measurements of customer difficulties in the international automatic service | 
 |  |  |  |  |  | E.428	: Connection retention | 
 |  |  |  |  |  | E.430	: Quality of service framework | 
 |  |  |  |  |  | E.431	: Service quality assessment for connection set-up and release delays | 
 |  |  |  |  |  | E.432	: Connection quality | 
 |  |  |  |  |  | E.433	: Billing integrity | 
 |  |  |  |  |  | E.434	: Subscriber-to-subscriber measurement of the public switched telephone network | 
 |  |  |  |  |  | E.436	: Customer Affecting Incidents and blocking Defects Per Million | 
 |  |  |  |  |  | E.437	: Comparative metrics for network performance management | 
 |  |  |  |  |  | E.438	: Performance parameters and measurement methods to assess N-ISDN 64 kbit/s circuit-switched bearer service UDI in operation | 
 |  |  |  |  |  | E.439	: Test call measurement to assess N-ISDN 64 kbit/s circuit-switched bearer service UDI in operation | 
 |  |  |  |  |  | E.440	: Customer satisfaction point | 
 |  |  |  |  |  | E.450	: Facsimile quality of service on public networks  General aspects | 
 |  |  |  |  |  | E.451	: Facsimile call cut-off performance | 
 |  |  |  |  |  | E.452	: Facsimile modem speed reductions and transaction time | 
 |  |  |  |  |  | E.453	: Facsimile image quality as corrupted by transmission-induced scan line errors | 
 |  |  |  |  |  | E.454	: Transmission performance metrics based on Error Correction Mode (ECM) facsimile | 
 |  |  |  |  |  | E.456	: Test transaction for facsimile transmission performance | 
 |  |  |  |  |  | E.457	: Facsimile measurement methodologies | 
 |  |  |  |  |  | E.458	: Figure of merit for facsimile transmission performance | 
 |  |  |  |  |  | E.459	: Measurements and metrics for characterizing facsimile transmission performance using non-intrusive techniques | 
 |  |  |  |  |  | E.460	: Measurements and metrics for monitoring the performance of V.34 Group 3 Facsimile | 
 |  |  |  |  |  | E.470	: Operational considerations for QoS of voice over IP-based networks with PSTN-IP-PSTN architecture | 
 |  |  |  |  |  | E.480	: Framework for service management operational requirements  Service management | 
 |  |  |  | E490-E799	: Traffic engineering | 
 |  |  |  |  | E490-E505	: Measurement and recording of traffic | 
 |  |  |  |  |  | E.490	: Traffic measurement and evaluation  General survey | 
 |  |  |  |  |  | E.490.1	: Overview of Recommendations on traffic engineering | 
 |  |  |  |  |  | E.491	: Traffic measurement by destination | 
 |  |  |  |  |  | E.492	: Traffic reference period | 
 |  |  |  |  |  | E.493	: Grade of service (GOS) monitoring | 
 |  |  |  |  |  | E.500	: Traffic intensity measurement principles | 
 |  |  |  |  |  | E.501	: Estimation of traffic offered in the network | 
 |  |  |  |  |  | E.502	: Traffic measurement requirements for digital telecommunication exchanges | 
 |  |  |  |  |  | E.503	: Traffic measurement data analysis | 
 |  |  |  |  |  | E.504	: Traffic measurement administration | 
 |  |  |  |  |  | E.505	: Measurements of the performance of common channel signalling network | 
 |  |  |  |  | E506-E509	: Forecasting of traffic | 
 |  |  |  |  |  | E.506	: Forecasting international traffic | 
 |  |  |  |  |  | E.507	: Models for forecasting international traffic | 
 |  |  |  |  |  | E.508	: Forecasting new telecommunication services | 
 |  |  |  |  | E520-E539	: Determination of the number of circuits in automatic and semi-automatic operation | 
 |  |  |  |  |  | E.520	: Number of circuits to be provided in automatic and/or semiautomatic operation, without overflow facilities | 
 |  |  |  |  |  | E.521	: Calculation of the number of circuits in a group carrying overflow traffic | 
 |  |  |  |  |  | E.522	: Number of circuits in a high-usage group | 
 |  |  |  |  |  | E.523	: Standard traffic profiles for international traffic streams | 
 |  |  |  |  |  | E.524	: Overflow approximations for non-random inputs | 
 |  |  |  |  |  | E.525	: Designing networks to control grade of service | 
 |  |  |  |  |  | E.526	: Dimensioning a circuit group with multi-slot bearer services and no overflow inputs | 
 |  |  |  |  |  | E.527	: Dimensioning at a circuit group with multi-slot bearer services and overflow traffic | 
 |  |  |  |  |  | E.528	: Dimensioning of digital circuit multiplication equipment (DCME) systems | 
 |  |  |  |  |  | E.529	: Network dimensioning using end-to-end GOS objectives | 
 |  |  |  |  | E540-E599	: Grade of service | 
 |  |  |  |  |  | E.540	: Overall grade of service of the international part of an international connection | 
 |  |  |  |  |  | E.541	: Overall grade of service for international connections (subscriber-to-subscriber) | 
 |  |  |  |  |  | E.543	: Grades of service in digital international telephone exchanges | 
 |  |  |  |  |  | E.550	: Grade-of-service and new performance criteria under failure conditions in international telephone exchanges | 
 |  |  |  |  | E600-E649	: Definitions | 
 |  |  |  |  |  | E.600	: Terms and definitions of traffic engineering | 
 |  |  |  |  | E650-E699	: Traffic engineering for IP-networks | 
 |  |  |  |  |  | E.651	: Reference connections for traffic engineering of IP access networks | 
 |  |  |  |  |  | E.671	: Post-selection delay in PSTN/ISDN networks using Internet telephony for a portion of the connection | 
 |  |  |  |  |  | E.681	: Traffic engineering methods for IP acess networks based on hybrid fiber/coax system | 
 |  |  |  |  | E700-E749	: ISDN traffic engineering | 
 |  |  |  |  |  | E.700	: Framework of the E.700-Series Recommendations | 
 |  |  |  |  |  | E.701	: Reference connections for traffic engineering | 
 |  |  |  |  |  | E.711	: User demand modelling | 
 |  |  |  |  |  | E.712	: User plane traffic modelling | 
 |  |  |  |  |  | E.713	: Control plane traffic modelling | 
 |  |  |  |  |  | E.716	: User demand modelling in Broadband-ISDN | 
 |  |  |  |  |  | E.720	: ISDN grade of service concept | 
 |  |  |  |  |  | E.721	: Network grade of service parameters and target values for circuit-switched services in the evolving ISDN | 
 |  |  |  |  |  | E.723	: Grade-of-service parameters for Signalling System No. 7 networks | 
 |  |  |  |  |  | E.724	: GOS parameters and target GOS objectives for IN services | 
 |  |  |  |  |  | E.726	: Network grade of service parameters and target values for B-ISDN | 
 |  |  |  |  |  | E.728	: Grade-of-service parameters for B-ISDN signalling | 
 |  |  |  |  |  | E.731	: Methods for dimensioning resources operating in circuit-switched mode | 
 |  |  |  |  |  | E.733	: Methods for dimensioning resources in Signalling System No. 7 networks | 
 |  |  |  |  |  | E.734	: Methods for allocating and dimensioning Intelligent Network (IN) resources | 
 |  |  |  |  |  | E.735	: Framework for traffic control and dimensioning in B-ISDN | 
 |  |  |  |  |  | E.736	: Methods for cell level traffic control in B-ISDN | 
 |  |  |  |  |  | E.737	: Dimensioning methods for B-ISDN | 
 |  |  |  |  |  | E.743	: Traffic measurements for SS No. 7 dimensioning and planning | 
 |  |  |  |  |  | E.744	: Traffic and congestion control requirements for SS No. 7 and IN-structured networks | 
 |  |  |  |  |  | E.745	: Cell level measurement requirements for the B-ISDN | 
 |  |  |  |  | E750-E799	: Mobile network traffic engineering | 
 |  |  |  |  |  | E.750	: Introduction to the E.750 series of Recommendations on traffic engineering aspects of networks supporting personnal communications services | 
 |  |  |  |  |  | E.751	: Reference connections for traffic engineering of land mobile networks | 
 |  |  |  |  |  | E.752	: Reference connections for traffic engineering of maritime and aeronautical systems | 
 |  |  |  |  |  | E.755	: Reference connections for UPT traffic performance and GOS | 
 |  |  |  |  |  | E.760	: Terminal mobility traffic modelling | 
 |  |  |  |  |  | E.770	: Land mobile and fixed network interconnection traffic grade of service concept | 
 |  |  |  |  |  | E.771	: Network grade of service parameters and target values for circuit-switched public land mobile services | 
 |  |  |  |  |  | E.773	: Maritime and aeronautical mobile grade of service concept | 
 |  |  |  |  |  | E.774	: Network grade of service parameters and target values for maritime and aeronautical mobile services | 
 |  |  |  |  |  | E.775	: UPT grade of service concept | 
 |  |  |  |  |  | E.776	: Network grade of service parameters for UPT | 
 |  |  |  | E800-E899	: Quality of telecommunication services: concepts, models, objectives and dependability planning | 
 |  |  |  |  | E800-E809	: Terms and definitions related to the quality of telecommunication services | 
 |  |  |  |  |  | E.800 (draft)	: Terms and definitions related to quality of service | 
 |  |  |  |  |  | E.800	: Terms and definitions related to quality of service and network performance including dependability | 
 |  |  |  |  |  | E.801	: Framework for Service Quality Agreement | 
 |  |  |  |  |  | E.802	: Framework and methodologies for the determination and application of QoS parameters | 
 |  |  |  |  | E810-E844	: Models for telecommunication services | 
 |  |  |  |  |  | E.810	: Framework of the Recommendations on the serveability performance and service integrity for telecommunication services | 
 |  |  |  |  |  | E.820	: Call models for serveability and service integrity performance | 
 |  |  |  |  |  | E.830	: Models for the specification, evaluation and allocation of serveability and service integrity | 
 |  |  |  |  | E845-E859	: Objectives for quality of service and related concepts of telecommunication services | 
 |  |  |  |  |  | E.845	: Connection accessibility objective for the international telephone service | 
 |  |  |  |  |  | E.846	: Accessibility for 64 kbit/s circuit-switched international end-to-end ISDN connection types | 
 |  |  |  |  |  | E.850	: Connection retainability objective for the international telephone service | 
 |  |  |  |  |  | E.855	: Connection integrity objective for the international telephone service | 
 |  |  |  |  | E860-E879	: Use of quality of service objectives for planning of telecommunication networks | 
 |  |  |  |  |  | E.860	: Framework of a service level agreement | 
 |  |  |  |  |  | E.861	: Defining operations competency metrics | 
 |  |  |  |  |  | E.862	: Dependability planning of telecommunication networks | 
 |  |  |  |  | E880-E899	: Field data collection and evaluation on the performance of equipment, networks and services | 
 |  |  |  |  |  | E.880	: Field data collection and evaluation on the performance of equipment, networks and services | 
 |  |  |  | E900-E999	: Other | 
 |  |  |  |  |  | E.910	: Procedures for registration within the domain ".int" | 
 |  |  |  | E supplements	: Supplements to the Series E Recommendations | 
 |  |  |  |  | E100-E400 supplements	: Supplements to the Series E Recommendations relating to the operations of the international service | 
 |  |  |  |  |  | E-300 series Suppl. 1	: List of possible supplementary telephone services which may be offered to subscribers | 
 |  |  |  |  |  | E-300 series Suppl. 5	: Modelling of an experimental test design for the determination of inexperienced user difficulties in setting up international calls using nationally available instructions, or to compare different sets of instructions | 
 |  |  |  |  | E400-E900 supplements	: Supplements to the Series E Recommendations relating to telephone network management and traffic engineering | 
 |  |  |  |  |  | E-800 series Suppl. 2	: Curves showing the relation between the traffic offered and the number of circuits required | 
 |  |  |  |  |  | E-800 series Suppl. 5	: Teletraffic implications for international switching and operational procedures resulting from a failure of a transmission facility | 
 |  |  | F series	: Non-telephone telecommunication services | 
 |  |  |  | F1-F109	: Telegraph service | 
 |  |  |  |  | F1-F19	: Operating methods for the international public telegram service | 
 |  |  |  |  |  | F.1	: Operational provisions for the international public telegram service | 
 |  |  |  |  |  | F.2	: Operational provisions for the collection of telegram charges | 
 |  |  |  |  |  | F.4	: Plain and secret language | 
 |  |  |  |  |  | F.10	: Character error rate objective for telegraph communication using 5-unit start-stop equipment | 
 |  |  |  |  |  | F.11	: Continued availability of traditional services | 
 |  |  |  |  |  | F.14	: General provisions for one-stop-shopping arrangements | 
 |  |  |  |  |  | F.15	: Evaluating the success of new services | 
 |  |  |  |  |  | F.16	: Global virtual network service | 
 |  |  |  |  |  | F.17	: Operational aspects of service telecommunications | 
 |  |  |  |  |  | F.18	: Guidelines on harmonization of international public bureau services | 
 |  |  |  |  |  | F.19	: Collection and dissemination of official service information | 
 |  |  |  |  | F20-F29	: The gentex network | 
 |  |  |  |  |  | F.20	: The international gentex service | 
 |  |  |  |  |  | F.21	: Composition of answer-back codes for the international gentex service | 
 |  |  |  |  |  | F.23	: Grade of service for long-distance international gentex circuits | 
 |  |  |  |  |  | F.24	: Average grade of service from country to country in the gentex service | 
 |  |  |  |  | F30-F39	: Message switching | 
 |  |  |  |  |  | F.30	: Use of various sequences of combinations for special purposes | 
 |  |  |  |  |  | F.31	: Telegram retransmission system | 
 |  |  |  |  |  | F.32	: Telegram destination indicators | 
 |  |  |  |  |  | F.35	: Provisions applying to the operation of an international public automatic message switching service for equipments utilizing the International Telegraph Alphabet No. 2 | 
 |  |  |  |  | F40-F58	: The international telemessage service | 
 |  |  |  |  |  | F.40	: International public telemessage service | 
 |  |  |  |  |  | F.41	: Interworking between the telemessage service and the international public telegram service | 
 |  |  |  |  | F59-F89	: The international telex service | 
 |  |  |  |  |  | F.59	: General characteristics of the international telex service | 
 |  |  |  |  |  | F.60	: Operational provisions for the international telex service | 
 |  |  |  |  |  | F.61	: Operational provisions relating to the chargeable duration of a telex call | 
 |  |  |  |  |  | F.63	: Additional facilities in the international telex service | 
 |  |  |  |  |  | F.64	: Determination of the number of international telex circuits required to carry a given volume of traffic | 
 |  |  |  |  |  | F.65	: Time-to-answer by operators at international telex positions | 
 |  |  |  |  |  | F.68	: Establishment of the automatic intercontinental telex network | 
 |  |  |  |  |  | F.69	: The international telex service  Service and operational provisions of telex destination codes and telex network identification codes | 
 |  |  |  |  |  | F.70	: Evaluating the quality of the international telex service | 
 |  |  |  |  |  | F.71	: Interconnection of private teleprinter networks with the telex network | 
 |  |  |  |  |  | F.72	: The international telex service  General principles and operational aspects of a store and forward facility | 
 |  |  |  |  |  | F.74	: Intermediate storage devices accessed from the international telex service using single stage selection  Answerback format | 
 |  |  |  |  |  | F.80	: Basic requirements for interworking relations between the international telex service and other services | 
 |  |  |  |  |  | F.82	: Operational provisions to permit interworking between the international telex service and the intex service | 
 |  |  |  |  |  | F.83	: Operational principles for communication between terminals of the international telex service and data terminal equipment on packet-switched public data networks | 
 |  |  |  |  |  | F.87	: Operational principles for the transfer of messages from terminals on the telex network to Group 3 facsimile terminals connected to the public switched telephone network | 
 |  |  |  |  |  | F.89	: Status enquiry function in the international telex service | 
 |  |  |  |  | F100-F104	: Scheduled and leased communication services | 
 |  |  |  |  |  | F.100	: Scheduled radiocommunication service | 
 |  |  |  |  |  | F.104	: International leased circuit services  Customer circuit designations | 
 |  |  |  |  | F105-F109	: Phototelegraph service | 
 |  |  |  |  |  | F.105	: Operational provisions for phototelegrams | 
 |  |  |  |  |  | F.106	: Operational provisions for private phototelegraph calls | 
 |  |  |  |  |  | F.107/E.323	: Rules for phototelegraph calls established over circuits normally used for telephone traffic | 
 |  |  |  |  |  | F.108	: Operating rules for international phototelegraph calls to multiple destinations | 
 |  |  |  | F110-F159	: Mobile service | 
 |  |  |  |  | F110-F159	: Mobile services and multidestination satellite services | 
 |  |  |  |  |  | F.110	: Operational provisions for the maritime mobile service | 
 |  |  |  |  |  | F.111	: Principles of service for mobile systems | 
 |  |  |  |  |  | F.112	: Quality objectives for 50-baud start-stop telegraph transmission in the maritime mobile-satellite service | 
 |  |  |  |  |  | F.113	: Service provisions for aeronautical passenger communications supported by mobile-satellite systems | 
 |  |  |  |  |  | F.115	: Service objectives and principles for future public land mobile telecommunication systems | 
 |  |  |  |  |  | F.116	: Service features and operational provisions in IMT-2000 | 
 |  |  |  |  |  | F.120/E.210	: Ship station identification for VHF/UHF and maritime mobile-satellite services | 
 |  |  |  |  |  | F.122	: Operational procedures for the maritime satellite data transmission service | 
 |  |  |  |  |  | F.127	: Operational procedures for interworking between the international telex service and the service offered by the INMARSAT-C system | 
 |  |  |  |  |  | F.130	: Maritime answer-back codes | 
 |  |  |  |  |  | F.131	: Radiotelex service codes | 
 |  |  |  |  |  | F.140	: Point-to-multipoint telecommunication service via satellite | 
 |  |  |  |  |  | F.141	: International two-way multipoint telecommunication service via satellite | 
 |  |  |  |  |  | F.150	: Service and operational provisions for the Intex service | 
 |  |  |  | F160-F399	: Telematic services | 
 |  |  |  |  | F160-F199	: Public facsimile service | 
 |  |  |  |  |  | F.162	: Service and operational requirements of store-and-forward facsimile service | 
 |  |  |  |  |  | F.163	: Operational requirements of the interconnection of facsimile store-and-forward units | 
 |  |  |  |  |  | F.170	: Operational provisions for the international public facsimile service between public bureaux (Bureaufax) | 
 |  |  |  |  |  | F.171	: Operational provisions relating to the use of store-and-forward switching nodes within the bureaufax service | 
 |  |  |  |  |  | F.182 bis	: Guidelines for the support of the communication of documents using Group 3 facsimile between user terminals via public networks | 
 |  |  |  |  |  | F.185	: Internet facsimile: Guidelines for the support of the communication of facsimile documents | 
 |  |  |  |  |  | F.190	: Operational provisions for the international facsimile service between public bureaux and subscriber stations and vice versa (bureaufax-telefax and vice versa) | 
 |  |  |  |  | F350-F399	: General provisions for telematic services | 
 |  |  |  |  |  | F.350	: Application of Series T Recommendations | 
 |  |  |  |  |  | F.351	: General principles on the presentation of terminal identification to users of the telematic services | 
 |  |  |  |  |  | F.353	: Provision of telematic and data transmission services on integrated services digital network (ISDN) | 
 |  |  |  | F550-F599	: Document communication | 
 |  |  |  |  | F580-F599	: Programming communication interfaces | 
 |  |  |  |  |  | F.581	: Guidelines for programming communication interfaces (PCIs) definition: Service Recommendation | 
 |  |  |  | F800-F849	: ISDN services | 
 |  |  |  |  |  | F.811	: Broadband connection-oriented bearer service | 
 |  |  |  |  |  | F.812	: Broadband connectionless data bearer service | 
 |  |  |  |  |  | F.813	: Virtual path service for reserved and permanent communications | 
 |  |  |  | F850-F899	: Universal personal telecommunication | 
 |  |  |  |  |  | F.850	: Principles of Universal Personal Telecommunication (UPT) | 
 |  |  |  |  |  | F.851	: Universal Personal Telecommunication (UPT)  Service description (service set 1) | 
 |  |  |  |  |  | F.852	: Universal Personal Telecommunication (UPT)  Service description (service set 2) | 
 |  |  |  |  |  | F.853	: Supplementary services in the Universal Personal Telecommunication (UPT) environment | 
 |  |  |  | F900-F999	: Human factors | 
 |  |  |  |  |  | F.901	: Usability evaluation of telecommunication services | 
 |  |  |  |  |  | F.902	: Interactive services design guidelines | 
 |  |  |  |  |  | F.910	: Procedures for designing, evaluating and selecting symbols, pictograms and icons | 
 |  |  |  | F supplements	: Supplements to the Series F Recommendations | 
 |  |  |  |  |  | F Suppl. 1	: Definitions relating to telegraph, telematic and data transmission services | 
 |  |  | G series	: Transmission systems and media, digital systems and networks | 
 |  |  |  | G100-G199	: International telephone connections and circuits | 
 |  |  |  |  | G100-G109	: General definitions | 
 |  |  |  |  |  | G.106 (draft)	: Terms and definitions related to quality of service | 
 |  |  | I series	: Integrated services digital network | 
 |  |  |  | I200-I299	: Service capabilities | 
 |  |  |  |  | I220-I229	: Common aspects of services in the ISDN | 
 |  |  |  |  |  | I.220	: Common dynamic description of basic telecommunication services | 
 |  |  |  |  |  | I.221	: Common specific characteristics of services | 
 |  |  |  |  | I230-I239	: Bearer services supported by an ISDN | 
 |  |  |  |  |  | I.230	: Definition of bearer service categories | 
 |  |  |  |  |  | I.231.1	: Circuit-mode 64 kbit/s unrestricted, 8 kHz structured bearer service | 
 |  |  |  |  |  | I.231.2	: Circuit-mode 64 kbit/s, 8 kHz structured bearer service usable for speech information transfer | 
 |  |  |  |  |  | I.231.3	: Circuit-mode 64 kbit/s, 8 kHz structured bearer service usable for 3.1 kHz audio information transfer | 
 |  |  |  |  |  | I.231.4	: Circuit-mode, alternate speech / 64 kbit/s unrestricted, 8 kHz structured bearer service | 
 |  |  |  |  |  | I.231.5	: Circuit-mode 2 x 64 kbit/s unrestricted, 8 kHz structured bearer service | 
 |  |  |  |  |  | I.231.6	: Circuit-mode 384 kbit/s unrestricted, 8 kHz structured bearer service | 
 |  |  |  |  |  | I.231.7	: Circuit-mode 1536 kbit/s unrestricted, 8 kHz structured bearer service | 
 |  |  |  |  |  | I.231.8	: Circuit-mode 1920 kbit/s unrestricted, 8 kHz structured bearer service | 
 |  |  |  |  |  | I.231.9	: Circuit-mode 64 kbit/s 8 kHz structured multi-use bearer service | 
 |  |  |  |  |  | I.231.10	: Circuit-mode multiple-rate unrestricted 8 kHz structured  bearer service | 
 |  |  |  |  |  | I.232.1	: Virtual call and permanent virtual circuit bearer service category | 
 |  |  |  |  |  | I.232.2	: Connectionless bearer service category | 
 |  |  |  |  |  | I.232.3	: User signalling bearer service category (USBS) | 
 |  |  |  |  |  | I.233.1	: ISDN frame relaying bearer service | 
 |  |  |  |  |  | I.233.2	: ISDN frame switching bearer service | 
 |  |  |  |  | I240-I249	: Teleservices supported by an ISDN | 
 |  |  |  |  |  | I.240	: Definition of teleservices | 
 |  |  |  |  |  | I.240 (draft)	: Teleservices supported by an ISDN | 
 |  |  |  |  |  | I.241.7	: Telephony 7 kHz teleservice | 
 |  |  |  |  |  | I.241.8	: Teleaction stage one service description | 
 |  |  |  |  | I250-I259	: Supplementary services in ISDN | 
 |  |  |  |  |  | I.250	: Definition of supplementary services | 
 |  |  |  |  |  | I.251.2	: Multiple Subscriber Number | 
 |  |  |  |  |  | I.251.3	: Calling Line Identification Presentation | 
 |  |  |  |  |  | I.251.4	: Calling Line Identification Restriction | 
 |  |  |  |  |  | I.251.5	: Connected Line Identification Presentation (COLP) | 
 |  |  |  |  |  | I.251.6	: Connected Line Identification Restriction (COLR) | 
 |  |  |  |  |  | I.251.7	: Malicious call Identification | 
 |  |  |  |  |  | I.251.8	: Sub-addressing supplementary service | 
 |  |  |  |  |  | I.251.9	: Calling name identification presentation | 
 |  |  |  |  |  | I.251.10	: Calling name identification restriction | 
 |  |  |  |  |  | I.252.4	: Call Forwarding Unconditional | 
 |  |  |  |  |  | I.253.1	: Call waiting (CW) supplementary service | 
 |  |  |  |  |  | I.253.3	: Completion of calls to busy subscribers | 
 |  |  |  |  |  | I.253.4	: Completion of calls on no reply | 
 |  |  |  |  |  | I.254.1	: Conference calling (CONF) | 
 |  |  |  |  |  | I.254.2	: Three-Party Supplementary Service | 
 |  |  |  |  |  | I.255.2	: Support of Private Numbering Plans | 
 |  |  |  |  |  | I.255.3	: Multi-level precedence and preemption service (MLPP) | 
 |  |  |  |  |  | I.256.1	: Credit card calling (CRED) | 
 |  |  |  |  |  | I.256.2a	: Advice of charge: charging information at call set-up time (AOC-S) | 
 |  |  |  |  |  | I.256.2b	: Advice of charge: charging information during the call (AOC-D) | 
 |  |  |  |  |  | I.256.2c	: Advice of charge: charging information at the end of the call (AOC-E) | 
 |  |  |  |  |  | I.257.1	: User-to-User Signalling (UUS) | 
 |  |  |  |  |  | I.258.1	: Terminal portability (TP) | 
 |  |  |  |  |  | I.258.2	: In-call modification (IM) | 
 |  |  |  | I300-I399	: Overall network aspects and functions | 
 |  |  |  |  | I330-I339	: Numbering, addressing and routing | 
 |  |  | Q series	: Switching and signalling | 
 |  |  |  | Q4-Q59	: International automatic and semi-automatic working | 
 |  |  |  |  | Q10-Q11	: Numbering plan and dialling procedures in the international service | 
 |  |  |  |  | Q35-Q39	: Tones for use in national signalling systems | 
 |  |  |  |  |  | Q.35/E.180	: Technical characteristics of tones for the telephone service | 
 |  |  | S series	: Telegraph services terminal equipment | 
 |  |  |  |  | S1-S139	: Start-stop terminals | 
 |  |  |  |  |  | S.1	: International Telegraph Alphabet No. 2 | 
 |  |  |  |  |  | S.2	: Coding scheme using International Telegraph Alphabet No. 2 (ITA2) to allow the transmission of capital and small letters | 
 |  |  |  |  |  | S.3	: Transmission characteristics of the local end with its termination (ITA2) | 
 |  |  |  |  |  | S.4	: Special use of certain characters of the International Telegraph Alphabet No. 2 | 
 |  |  |  |  |  | S.5	: Standardization of page-printing start-stop equipment and cooperation between page-printing and tape-printing start-stop equipment (ITA2) | 
 |  |  |  |  |  | S.6	: Characteristics of answerback units (ITA2) | 
 |  |  |  |  |  | S.7	: Control of teleprinter motors | 
 |  |  |  |  |  | S.8	: Intercontinental standardization of the modulation rate of start-stop apparatus and of the use of combination No. 4 in figure-shift | 
 |  |  |  |  |  | S.9	: Switching equipment of start-stop apparatus | 
 |  |  |  |  |  | S.10	: Transmission at reduced character transfer rate over a standardized 50-baud telegraph channel | 
 |  |  |  |  |  | S.11	: Use of start-stop reperforating equipment for perforated tape retransmission | 
 |  |  |  |  |  | S.12	: Conditions that must be satisfied by synchronous systems operating in connection with standard 50-baud teleprinter circuits | 
 |  |  |  |  |  | S.13	: Use on radio circuits of 7-unit synchronous systems giving error correction by automatic repetition | 
 |  |  |  |  |  | S.14	: Suppression of unwanted reception in radiotelegraph multi-destination teleprinter systems | 
 |  |  |  |  |  | S.15	: Use of the telex network for data transmission at 50 bauds | 
 |  |  |  |  |  | S.16	: Connection to the telex network of an automatic terminal using a V.24 DCE/DTE interface | 
 |  |  |  |  |  | S.17	: Answer-back unit simulators | 
 |  |  |  |  |  | S.18	: Conversion between International Telegraph Alphabet No. 2 and International Alphabet No. 5 | 
 |  |  |  |  |  | S.19	: Calling and answering in the telex network with automatic terminal equipment | 
 |  |  |  |  |  | S.20	: Automatic clearing procedure for a telex terminal | 
 |  |  |  |  |  | S.21	: Use of display screens in telex machines | 
 |  |  |  |  |  | S.22	: "Conversation impossible" and or pre-recorded message in response to J/BELL signals from a telex terminal | 
 |  |  |  |  |  | S.23	: Automatic request of the answerback of the terminal of the calling party, by the telex terminal of the called party or by the international network | 
 |  |  |  |  |  | S.30	: Standardization of basic model page-printing machine using International Alphabet No. 5 | 
 |  |  |  |  |  | S.31	: Transmission characteristics for start-stop data terminal equipment using International Alphabet No. 5 | 
 |  |  |  |  |  | S.32	: Answer-back units for 200- and 300-baud start-stop machines in accordance with Recommendation S.30 | 
 |  |  |  |  |  | S.33	: Alphabets and presentation characteristics for the intex service | 
 |  |  |  |  |  | S.34	: Intex terminals  Requirements to effect interworking with the international telex service | 
 |  |  |  |  |  | S.35	: Answerback coding for the Intex service | 
 |  |  |  |  |  | S.36	: Intex and similar services  Terminal requirements to effect interworking between terminals operating at different speeds | 
 |  |  |  |  | S140-S199	: Definitions | 
 |  |  |  |  |  | S.140	: Definitions of essential technical terms relating to apparatus for alphabetic telegraphy | 
 |  |  |  | S supplements	: Supplements to the Series S Recommendations | 
 |  |  |  |  |  | S Suppl. 1	: Minimal specifications for the bilingual (arabic/latin) teleprinter | 
 |  |  | X series	: Data networks, open system communications and security | 
 |  |  |  | X1-X199	: Public data networks | 
 |  |  |  |  | X90-X149	: Network aspects | 
 |  |  |  |  |  | X.122/E.166	: Numbering plan interworking for the E.164 and X.121 numbering plans | 
 |  |