connection oriented convergence function (DQDB) (COCF)

Connection Oriented Convergence Function (COCF) is a function of Distributed Queue Dual Bus(DQDB) that is used to prepare data coming from or using a connectionless service and forwarding it to a connection-oriented service. The COCF service uses the extended Queued Arbitrated( QA) feature of DQDB, which is required for connection-oriented services.