GSMA IR.94 IMS Profile for Video Telephony

Also known as: GSMA IR.94, ViLTE Profile

IR.94 is the GSMA Permanent Reference Document that extends the VoLTE IR.92 profile with conversational video telephony (ViLTE) and video-share over IMS. It mandates H.264 and, later, H.265 video codecs, SDP negotiation rules, QoS handling and interworking with 3G-CS video. Security considerations focus on SDP fuzzing, RTP video injection and codec-related DoS.

Categories: Protocols and StandardsEncryption and Cryptography

IR.94 in context

Telecom security is written into standards from 3GPP, GSMA, ETSI, IETF and ITU-T. Understanding which body owns which specification, and how they interlock, is essential for both design and audit work.

Cryptography in telecom spans air-interface ciphers (A5/1, A5/3, ZUC, SNOW, NEA/NIA), transport (IPsec, TLS) and identity (AKA, 5G-AKA, EAP-AKA'). Weak or downgradeable ciphers remain a live risk on 2G/3G fallback.

To place IR.94 in the wider telecom-security picture, review SRTP, QCI, IR.92, Zigbee, MTSI and PRD: each entry cross-references back to this page so you can walk the topic in either direction.

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