This Recommendation defines the basic framework and service Aspects of a Multi-Aspect Packet Assembly/Disassembly facility (MAP) in a Public Data Network. A MAP includes any Packet Assembly/Disassembly (PAD) Aspect defined by ITU-T, but is not limited to them. A MAP may also include non-ITU-T PAD Aspects, such as Binary Synchronous Communications PADs, SDLC PADs, T3POS PADs, generalized polling PAD (GPAD), et al. The Recommendation does not specify particular network access methods nor protocol Aspects.