This document specifies the LLC procedures that permit the conveyance of Common Air Interface (CAI) data packets between air interface endpoints for all relevant packet data configurations. The information necessary to enable interoperable LLC procedures for Packet Data is provided in this document or referenced in other documents as appropriate. This document assumes the reader has a good working knowledge of the Data Overview and Specification [6]. The functions allocated to the LLC procedures include the following major aspects: ? Confirmed and unconfirmed CAI data packet conveyance ? Segmentation and re-assembly of logical messages