scope:

FOREWORD

1. The document ED-137 Volume 1 "Interoperability Standards for VoIP ATM Radio Components" was prepared by EUROCAE Working Group 67 and was accepted by the Council of EUROCAE on 19 January 2012.

2. EUROCAE is an international non-profit making organisation. Membership is open to manufacturers and users in Europe of equipment for aeronautics, trade associations, national civil aviation administrations and non-European organisations. Its work programme is principally directed to the preparation of performance specifications and guidance documents for civil aviation equipment, for adoption and use at European and world-wide levels.

3. The findings of EUROCAE are resolved after discussion among its members and, where appropriate, in collaboration with RTCA Inc, Washington D.C. USA and/or the Society of Automotive Engineers (SAE), Warrendale, PA, USA through their appropriate committee.

4. This version of the document represents "the minimum specification required for Manufacturers and Users to assure Interoperability between VoIP ATM Radio Components". EUROCAE WG67 has updated the previous version of ED137A and created a separated document ED 137 Volume 1 replacing the Part 1 of ED137A, referenced in ICAO document 9896:

• following a series of plug tests, performed by many suppliers in Arlington in May 2011 and in Sophia Antipolis in June 20112010, improving ED- 137 concerning the understanding of interoperability requirements between the ATM VoIP components,

• following discussions with FAA for taking into account US requirements agreeable within the European context.

5. This version is taking into account the EUROCONTROL VoIP in ATM Test Case Specification.

6. EUROCAE performance specifications are recommendations only. EUROCAE is not an official body of the European governments; its recommendations are valid statements of official policy only when adopted by a particular government or conference of governments.