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 the specs interlock (for example 3GPP TS 33.501 with GSMA FS.34 for 5G SBA security), 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, and post-quantum migration is now on the roadmap for interconnect and roaming keys.

To place IR.94 in the wider telecom-security picture, review SRTP, QCI, IR.92, Zigbee, MTSI and PRD.

Related terms

Equipment

IMS core (CSCF, TAS, MRF, MGCF, BGCF)

Articles in the P1 mobile network security guide

Related topic hubs

More from the TelcoSec Glossary

Browse the full TelcoSec Glossary, the Ultimate Guide to Mobile Network Security, or the P1 Arsenal of telecom-security tools.