|IMP-IMP and HOST-HOST Control Links
Network Working Group University of California Los Angeles Request for Comments: 18 Vint Cerf Category: September 1969
It is suggested that link 1 be used for the HOST-HOST control link and link 0 be used for IMP-IMP control.
This will facilitate communication between Hosts and reduce delays due to interference with IMP-IMP communications.
[This RFC has been restored to on-line status by Elmar K. Bins]