1. A portion of the Web Servicesarchitecture for defining and describing various Web Services. 2. The architectural protocol layers of a Bluetoothwirelesscommunication system, comprising the {Host Control Interface} (HCI), {Logical Link Control and Adaptation Protocol} (L2CAP), {RS232 Serial Cable Emulation Profile} (RFCOMM), Service Discovery Protocol (SDP), and {Object exchange} (OBEX). (2002-06-28)