CONTENTS

 1     Introduction
 2     End-to-end transmission time limits
 3     Transmission time allocation
Annex A – Delay estimation for circuits
        A.1     Planning values of transmission time
        A.2     National extension circuits
        A.3     International circuits
Annex B – Long delay considerations for telephone, videotelephone and videoconference circuits
        B.1     Introduction
        B.2     Effect of long transmission delays on the subscriber
        B.3     Summary and conclusions
References