Through the Iris Service Definition Document (Iris Service SDD v2.0) and the Service Notice #1 (Service Notice), ESSP informs all Iris Users of the Entry Into Service (EIS) of the Iris Ground-Ground Router (Iris GGR) and the associated network upgrades, including the information about the migration towards the full entry into service.
The EIS of this Iris GGR along with the associated network upgrades is the technical solution that allows to segregate the routing information for an Iris Working Agreement (IWA) Signatory ANSP and non-IWA Signatory ANSP.
This segregation ensures that all messages (uplink and downlink) exchanged between Iris equipped aircraft and non-IWA Signatory ANSPs (i.e. only-VDL ANSP) are forwarded only through the VDLm2 data link. Besides, it ensures that all messages (uplink and downlink) between Iris equipped aircraft and IWA Signatory ANSPs are performed through SatCom or VDLm2 based on the availability of the Air/Ground (A/G) links.
The ANSPs with an IWA in force need to migrate their connection from the existing SITA GGR to the new SITA Iris GGR. A transition period, starting with the publication of the Iris Service SDD v2.0, is planned for this aim so that each ANSP with an IWA in force can migrate gradually.