List of International Signalling Point Codes (ISPC) (According to Recommendation ITU-T Q.708 (03/99))

Operational Bulletin No. 1280 (15.XI.2023) and Annexed List:
Mobile Network Codes (MNC) for the international identification plan for public networks and subscriptions (According to Recommendation ITU-T E.212 (09/2016)) (Position on 15 November 2023)

Operational Bulletin No. 1295 (1.VII.2024) and Annexed List:
List of International Signalling Point Codes (ISPC) (According to Recommendation ITU-T Q.708 (03/99)) (Position on 1 July 2024)

Mobile Network Codes (MNC) for the international identification plan for public networks and subscriptions (According to Recommendation ITU-T E.212 (09/2016))

List of International Signalling Point Codes (ISPC) (According to Recommendation ITU-T Q.708 (03/99))

Security framework for voice-over-long-term-evolution (VoLTE) network operation

Security framework for the Internet of things based on the gateway model

Security requirements and framework for big data analytics in mobile Internet services

Technical framework for countering mobile in-application advertising spam

ITU-T X.1245 - Supplement on technical measures and mechanisms on countering spoofed calls in the terminating network of voice over long term evolution (VoLTE)

ITU-T X.1242 - Supplement on guidelines on countermeasures against short message service phishing and smishing attacks

ITU-T X.660 - Supplement on guidelines for using object identifiers for the Internet of things

ITU-T X.1231 - Supplement on technical framework for countering telephone service scams

Interworking between session initiation protocol (SIP) and bearer independent call control protocol or ISDN user part

IMS references to Release 12 for communication between IMS and NGN networks to support end-to-end service interoperability

Inter-IMS network to network interface - Protocol specification

PSTN/ISDN terminal equipment using IP multimedia core network subsystem; Conformance testing - Part 2: Test suite structure and test purposes

PSTN/ISDN terminal equipment using IP Multimedia core network subsystem; Conformance testing; Part 1: PICS

Framework for solutions to combat counterfeit ICT devices

Cloud interoperability testing for web applications - part 1: Interoperability testing between the CSC and CSP

Framework for interconnection between VoLTE-based network and other networks supporting emergency telecommunications service (ETS)

Application of the ISDN User Part of CCITT signalling system No. 7 for international ISDN interconnections

ISDN user-network interface layer 3 specification for basic call control

Interoperability testing requirements of a virtual switch

Testing methodologies of Internet related performance measurements including e2e bit rate within the fixed and mobile operators' networks

Signalling procedures of the probes to be used for remote testing of network parameters

Signalling protocol for heterogeneous Internet of things gateways

Signalling requirements and architecture for the Internet service quality monitoring system

Signalling requirements and architecture for interconnection between trustable network entities

Protocol for time constraint Internet of things-based applications over software-defined networking

Timing characteristics of an enhanced synchronous equipment slave clock

Characteristics of MPLS-TP equipment functional blocks

Characteristics of MPLS-TP equipment functional blocks supporting ITU-T G.8113.1/Y.1372.1 OAM mechanisms

Interface between the link layer and the physical layer for digital subscriber line (DSL) transceivers

Fast access to subscriber terminals (G.fast) - Physical layer specification

Fast access to subscriber terminals (G.fast) - Power spectral density specification

Transmission characteristics of optical components and subsystems

Procedures for the identification and selection of common modes of operation between data circuit-terminating equipments (DCEs) and between data terminal equipments (DTEs) over the general switched telephone network and on leased point-to-point telephone-type circuits

Procedures for establishing communication between two multiprotocol audiovisual terminals using digital channels at a multiple of 64 or 56 kbit/s

Serial asynchronous automatic dialling and control

Operational and interworking requirements for modems operating in the text telephone mode

List of definitions for interchange circuits between data terminal equipment (DTE) and data circuit-terminating equipment (DCE)

Electrical characteristics for balanced double-current interchange circuits operating at data signalling rates up to 10 Mbit/s

A 48/56/64 kbit/s data-circuit terminating equipment standardized for use on digital point-to-point leased circuits

Support by an ISDN of data terminal equipment with V-Series type interfaces with provision for statistical multiplexing

Support of data terminal equipments with V-Series type interfaces by an integrated services digital network

Procedure for DTE-controlled call negotiation

Electrical characteristics for unbalanced double-current interchange circuits for general use with integrated circuit equipment in the field of data communications

Electrical characteristics for balanced double-current interchange circuits for general use with integrated circuit equipment in the field of data communications

Support by an ISDN of data terminal equipment with V-series type interfaces with provision for statistical multiplexing