APPARATUS FOR TRANSITION BETWEEN NETWORK CONTROL AND LINK CONTROL

摘要

An apparatus in a digital communication system for receiving and/or transmitting link control bytes of eight bits or in the alternative information bytes of any number of bits. Dynamic switching to different byte size in an information field is accomplished by utilizing a logic control field (LCF) as part of a message received or transmitted, comprising 8-bit bytes which are recursively extendable. The first octet of the LCF is a text control byte for identifying the number of bits in each byte contained in the accompanying text field transmitted or received, whereas the last LCF octet is indicated by setting the most significant bit (MSB) of the octet to 1. Apparatus responsive to the above fields for accomplishing the transition is disclosed.