Harmonization of the ISDN D-channel link-access protocol with the IEEE 802.2 logical-link control

Addresses the potential for compatibility between the link layer protocols used by LAN (local area network) terminals and those used by ISDN (integrated services digital network) terminals. The authors find that although the LAN logical-link control (IEEE 802.2 Type 2) and the ISDN D-channel link-access protocol (LAPD) are not completely compatible with one another, it is possible to define an extended version of LAPD, referred to as LAPD+, that can interoperate with both LAPD and IEEE 802.2. They describe the appropriate modifications to LAPD, and point out that all but one are already included in a modified LAPD, referred to as LAP-V.120, that is defined in CCITT Draft Recommendation V.120. They suggest that the remaining incompatibility be taken care of through modification of IEEE 802.2. Finally, the authors describe several additional extensions to LAPD that could enhance the general utility of LAPD+ for high-speed data communication in the ISDN environment