IP over HF as a bearer service for NATO formal messages

The aim of our study is to explore the use of STANAG 4406 Annex E on top of an HF radio subnet that offers an IP transfer service (STANAG 5066 and 4538). We have studied the interactions between protocols defined in STANAG's 4406 and in 4538, how they can interact in an optimum way with each other, and what the current limitations are. Protocols are described, and typical response times are measured in the lab on a perfect HF channel (no channel errors). Considerations regarding interoperability when running IP over HF are also given.