April 10, 2026
Open Consultation for ED-136/1A

We are pleased to announce the availability of the following draft EUROCAE document prepared by EUROCAE WG-67 Voice over Internet Protocol (VoIP) for ATM:

  • ED-136/1A: VoIP ATM System Operational and Technical Requirements Volume 1 – OSED. 

After the publications of ED-136, EDs-137 and ED-138 as from 2009 and latest updates of ED-137C published in May 2020, the current objective of WG-67 is to update ED-136 and ED-138 to version A according to the EUROCAE update process. ED-136A will address the introduction of a number of safety critical services and related environments for the application of Voice over IP (VoIP) for ATM such as remote ATSU operations, contingency scenarios, dynamic airspace configuration, flight centric operations, RPAS voice services and will allocate safety and performance requirements for each of these services. ED-136A will be structured in two volumes as follows: ED-136/1A Operational Services and Environment Definition (OSED) and ED-136/2A Safety and Performance Requirements (SPR) standard. ED-138A will include the feedback received from current implementations on security and performance associated requirements. ANSPs are using this document as the specification of their Networks.

ED-136/1A will define a number of safety critical services and related environments for the application of Voice over IP (VoIP) for ATM Applications. It supports the introduction of new operational concepts enabled by VoIP in ATM (ATSU operations, remote ATSU operations, contingency operations, cross-border sectorisation operations, flight centric operations and RPAS operations). The document is intended to be used by equipment suppliers for designing VoIP ATM systems, by the ANSPs as reference for procurement activities and by regulators supporting applicable conformity assessment. Due to its complexity and technical nature, WG-67 agreed to allow 60 days for Open Consultation.

You are invited to review the proposed draft on the EUROCAE Workspace and complete the comment form. If you are a non-member of EUROCAE, please register here (and click on “Access only to Open Consultation”). Early replies are encouraged.

End Date: 09/06/2026.

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