Computer Dictionary of Information Technology

Columbia AppleTalk Package

(CAP) An implementation of Apple Computer's AppleTalk protocols for Unix 4.2BSD and its derivatives, from Columbia University. There are two different LAP delivery mechanisms for: IPTalk and Ethertalk (possibly using UAB).

CAP supports the following AppleTalk protocols: AppleTalk Transaction Protocol (ATP), Name Binding Protocol (NBP), Printer Access Protocol (PAP), AppleTalk Session Protocol (ASP), AppleTalk Filing Protocol (AFP) client side. In addition, the Datagram Delivery Protocol (DDP) and Zone Information Protocol (ZIP) are partially available. The structure of the Internet Appletalk Bridge software makes it impossible to provide full DDP service. Only the Get Zone List ATP ZIP command is implemented for ZIP.