April 23, 2019
ED-137C/2-4 "Interoperability Standard for VOIP ATM Components - Volume 2 Telephone - Addendum 4"

We are pleased to announce the publication of ED-137C/2-4 “Interoperability Standard for VOIP ATM Components – Volume 2 Telephone – Addendum 4 Override Call.”
The scope of ED-137 is to define the rules for VoIP implementations to support ATM communications and their interoperability. ED-137 is composed of multiple Volumes, each of which is dedicated to a specific application. Volume 2 proposes a profile standard for the use of SIP to establish, terminate and modify speech media sessions of the Ground Telephone Service in an Air Traffic Services Ground Voice Network (AGVN). Volume 2 is composed of a core document describing the basic requirements and a number of addenda dedicated to specifc functionalities. Addendum 4 describes the requirements for Override Calls.

Available on the EUROCAE website.

Related News

Join Us for the EUROCAE Digital Standards Workshop

EUROCAE is pleased to invite members and stakeholders to a one-day Digital Standards Workshop, focused on shaping the future of ...

New Publication: ER-039 "Report on Aviation Data Security"

We are pleased to announce the publication of ER-039 “Report on Aviation Data Security”. ER-039 Report on Aviation Data Security ...

Meet our Experts - Episode 2

At EUROCAE, we’re proud to count on over 5.000 experts shaping the future of aviation through our 50 active Working ...

Open Consultation for ED-107B & ED-338

We are pleased to announce the availability of the following draft EUROCAE documents prepared by EUROCAE WG-31 Electromagnetic Hazards: ED-107B: ...

Aircraft Lightning Zoning Workshop

This week, EUROCAE is proud to host the Aircraft Lightning Zoning Workshop at our Paris Headquarters. The programme features expert-led ...

NEWSblog June 2025

Catch up on all the latest updates from EUROCAE in our monthly newsletter — your go-to source for insights into ...