Voice over Internet Protocol (VoIP)
EUROCAE WG-67, with cooperation from EUROCONTROL, European industry, and ANSPs, developed the first VoIP in ATM standard. The standard was issued in February 2009 as a set of documents (ED136-138) defining the operational voice concept, the interoperability solutions and the network- associated requirements. A new version of the standard (ED137B) was released in February 2012 after a review which included integration of requirements from the U.S. Federal Aviation Administration (FAA).
These documents are numbered ED 136, ED 137B, ED 138 and consist of:
- VoIP ATM System Operational and Technical Requirements (ED136)
- Interoperability Standards for VoIP ATM Components (ED137B)
- Network Requirements and Performances for VoIP ATM Systems (ED138)
ICAO Aeronautical Communication Panel Working Group I, responsible for the development of the ICAO Aeronautical Telecommunication Network over the Internet Protocol Suite (IPS) standards finalised the inclusion of VoIP requirements into ICAO DOC 9896 by making a reference to the Eurocae specification on Interoperability Standards for VoIP ATM Components.
A EUROCONTROL European Single Sky Implementation (ESSIP) objective for VoIP in ATM became active in 2011 for the European Civil Aviation Conference (ECAC) States. The deployment is planned to be initiated in January 2013 for both inter-centre telephony and the ground segment of the air-ground voice communications. The migration of the European ATM voice services to VoIP is forecast to be finalised by December 2018 for inter-centre telephony and by December 2020 for the ground segment of air-ground communications.
To support the European-wide ATM voice communications transition towards VoIP, EUROCONTROL launched the VoIP Implementation and Transition Expert Group (VOTE) in February 2010. VOTE has the generic mission to address VoIP in ATM implementation and transition-related issues on a case-by-case basis; and to identify solutions and deliver recommendations to interested parties (e.g. ANSPs, industry, TELCOs and standardisation bodies).
EUROCONTROL finalised the VoIP in ATM Test case specification which consist of the following set of interconnected documents:
- VoIP in ATM cross-reference matrix
- Telephone Test case specification for VoIP in ATM
- Radio Test case specification for VoIP in ATM
- Recorder Test case specification for VoIP in ATM
- SIP v ATS-QSIG Interworking Gateway Specification
- SIP v ATS-R2 Interworking Gateway Specification
- VoIP in ATM Test suite specification - High Level Description of VoIP in ATM Test Cases.
The documents are available on the VOTE OneSky Team Library on the EUROCONTROL extranet.
EUROCONTROL further developed the VoIP in ATM test suite called VOTER, an essential element to facilitate timely multi-vendor VoIP implementations. VOTER version 2.0.0. has been released in April 2013.