IMS & Voice (VoLTE, VoNR)

Voice Activity Detector (VAD) for Enhanced Full Rate (EFR) speech traffic channels

Specifies the Voice Activity Detector (VAD) for Discontinuous Transmission (DTX) in Enhanced Full Rate (EFR) speech traf

Half rate speech

Specifies the Voice Activity Detector (VAD) for Discontinuous Transmission (DTX) in half-rate GSM speech

Technical Report on MUROS

Feasibility study on techniques to improve voice capacity in GSM networks

Group Call Control (GCC) protocol

Specification of the Group Call Control (GCC) protocol used by the Voice Group Call Service (VGCS) on the radio interfac

Broadcast Call Control (BCC) protocol

Specifies the Broadcast Call Control (BCC) protocol used by the Voice Broadcast Call Service (VBCS) on the radio interfa

Voice Group Call Service (VGCS)

Specification of the stage 2 description of the Voice Group Call Service (VGCS) for 3GPP networks.

Voice Broadcast Service (VBS)

Specification of the stage 2 description of the Voice Broadcast Service (VBS)

GSM, stage 1

Specifies the stage one description of the Voice Group Call Service (VGCS) in GSM

Voice Broadcast Service (VBS); Stage 1

Specification of the stage one description of the Voice Broadcast Service (VBS) for mobile networks.

Technical Report on Unsolicited Communications

Analyzes solutions to protect mobile subscribers from unsolicited communications over IMS

Technical Report on Security Aspects

Analyzes security aspects for potential enhancements to IMS based on ongoing study

IP Multimedia Subsystem (IMS) media plane security

Specifies IMS media plane security for RTP, MSRP, data channels, and BFCP.

Security assurance for IP Multimedia Subsystem (IMS)

Defines security requirements and test cases for IMS network product classes.

IP Multimedia Subsystem (IMS) Application Server (AS) service data descriptions

Standardizes the structure and coding of service data transported over the Sh interface between an Application Server an

IP Multimedia Subsystem (IMS); Sc interface

Specifies the Diameter-based Sc interface between Data Channel Signalling Function (DCSF) and Home Subscriber Server (HS

Interworking between IMS and MSC Server for ICS

Specifies interworking between IMS and CS domain to enable ICS for UEs using CS access

Media Gateway Control Function (MGCF) - IM Media Gateway

Defines the protocol for the interface between MGCF and IM-MGW for interworking between IMS and CS domains.

IMS Application Level Gateway (IMS-ALG) – IMS Access Gateway (IMS-AGW)

Defines the protocol for the interface between the IMS-ALG and IMS-AGW

IP Multimedia (IM) Subsystem Cx and Dx interfaces

Specifies interactions between HSS, CSCF, and SLF for IMS signaling

Interworking between the IM CN subsystem and IP networks

Defines interworking between IMS and external IP networks for multimedia services

Inter-IMS Network to Network Interface (NNI)

Addresses control plane signaling, security, numbering/addressing, and user plane issues for IMS network interconnection

Technical Report on IVAS Codec Selection

Report on the Immersive Voice and Audio Services (IVAS) codec selection process and test results

Technical Report

Provides protocol details for Multiparty Real-Time Text service in IMS

Technical Report on eCall Data Transmission

Analyzes the suitability of CTM for transmitting eCall data over the voice channel

Study on enhanced Voice over LTE (VoLTE) performance

Study on improving VoLTE performance by adapting to robust codec modes

Technical Report on EVS Codec

Overview of the Enhanced Voice Services (EVS) codec standardization process

Study on media handling aspects of 5G conversational services

Study on media handling aspects of 5G conversational services, focusing on MTSI and IMS-based Telepresence

Technical Report on IMS-based Telepresence

Study on media handling aspects of IMS-based telepresence in 3GPP services

Codec for Enhanced Voice Services (EVS)

Defines a frame loss concealment procedure for the EVS codec

Codec for Enhanced Voice Services (EVS); Jitter Buffer Management

Defines the Jitter Buffer Management solution for the EVS codec in packet-based communications

Codec for Enhanced Voice Services (EVS)

Specification for the EVS codec, including floating-point ANSI-C code

Codec for Enhanced Voice Services (EVS)

Specifies requirements for background noise evaluation, encoding/decoding, and comfort noise generation for the EVS spee

Codec for Enhanced Voice Services (EVS)

Specifies the digital test sequences for the Enhanced Voice Services (EVS) Codec.

Codec for Enhanced Voice Services (EVS)

Detailed description of the signal processing algorithms of the Enhanced Voice Services coder.

Codec for Enhanced Voice Services (EVS)

Specifies the system level aspects of the Discontinuous Transmission (DTX) function of the EVS codec.

Codec for Enhanced Voice Services (EVS)

Specification for the Enhanced Voice Services (EVS) codec, a multi-rate audio codec optimized for voice and music/mixed

Codec for Enhanced Voice Services (EVS);Adaptive Multi-Rate - Wideband (AMR-WB)backward compatible functions

Specifies the AMR-WB backward compatible functions of the EVS codec

Codec for Enhanced Voice Services (EVS)

Specification for the Enhanced Voice Services (EVS) codec, including ANSI-C code

Codec for Enhanced Voice Services (EVS)

Specifies the Voice Activity Detector (VAD) used in the Discontinuous Transmission (DTX) of the EVS Codec

Codec for Enhanced Voice Services (EVS)

Defines the ANSI-C code for fixed-point implementation of the EVS codec

Codec for Immersive Voice and Audio Services (IVAS)

Detailed algorithmic description of the IVAS codec for low-delay speech and audio coding and rendering

IP Multimedia Subsystem (IMS) based Packet Switch Streaming (PSS) and Multimedia Broadcast/Multicast Service (MBMS) User Service; Protocols

Specification of using IMS protocols to initiate and control PSS and MBMS streaming and download user services

Codec for Immersive Voice and Audio Services (IVAS)

Specification of digital test sequences for conformance testing of the IVAS codec and related components

Codec for Immersive Voice and Audio Services (IVAS); General overview

General overview of the audio processing and auxiliary functions of the IVAS codec

Codec for Immersive Voice and Audio Services (IVAS)

Specification for the IVAS codec, including rendering, error concealment, and jitter buffer management

Codec for Immersive Voice and Audio Services (IVAS)

Defines a frame loss concealment procedure for the IVAS decoder to handle packet loss or corruption.

Codec for Immersive Voice and Audio Services (IVAS)

Defines the Jitter Buffer Management (JBM) solution for the IVAS codec

IMS-based AR Real-Time Communication

Specification for IMS-based conversational AR services, including real-time A/V, data channels, and split rendering.

Codec for Immersive Voice and Audio Services (IVAS)

Comprehensive description of the rendering functions of the IVAS decoder/renderer

Telepresence using the IP Multimedia Subsystem (IMS)

Specification of a client for IMS-based telepresence service supporting speech, video and text