Intelligent transport systems - eSafety - eCall High level application protocols (HLAP) using IP Multimedia Subsystem (IMS) over packet switched networks (Endorsed by Asociación Española de Normalización in February of 2023.)
Edition 2023-02-01

Project 25 Inter-RF Subsystem Interface Messages and Procedures for Voice Services, Mobility Management, and RFSS Capability Polling Services
Edition 2012-11

Project 25 Inter-RF Subsystem Interface Messages and Procedures for Voice Services, Mobility Management, and RFSS Capability Polling Services- Addendum 1 - Group Emergency Behaviors
Edition 2013-07

Project 25 Inter-RF Subsystem Interface Messages and Procedures for Voice Services, Mobility Management, and RFSS Capability Polling Services- Addendum 2- Erratum 1 to Fix Errors and Omissions
Edition 2016-11

Project 25 Inter-RF Subsystem Interface (ISSI) - Messages and Procedures for Supplementary Data
Edition 2011-07

Project 25 Inter-RF Subsystem Interface (ISSI)-Messages and Procedures for Supplementary Data- Addendum 1- Emergency Alarm Enhancements
Edition 2017-05

Project 25 Inter-RF Subsystem Interface (ISSI)-Messages and Procedures for Supplementary Data- Addendum 2- Individual Regrouping
Edition 2018-03

Project 25 Inter RF Subsystem Interface (ISSI) Messages and Procedures for Conventional Operation
Edition 2008-06

Project 25 Inter-RF Subsystem Interface (ISSI) Messages and Procedures for Packet Data Services
Edition 2009-10

Project 25 Inter RF Subsystem Interface (ISSI) Measurement Methods for Voice Services
Edition 2007-04