Thus, ABR does offer qualitative guarantee that the transmitter's data should get to the intended receivers without experiencing unwanted cell loss. A logical expansion of AB signaling. ABCD signaling is used in ESF framing. Bits are robbed from frames 6,12,18 and 24. A method of enable Clear Channel capability while running Fractional T1 in areas where B8ZS is not available.
Customer data is transmitted in the odd numbered slots.
ACF Advanced Cummunications Function, SNA software. A type of message sent to indicate that a block of data arrived at its destination without error. ACL Access Control List Most network security systems operate by allowing selective use of services. An Access Control List is the usual means by which access to, and denial of services is controlled. It is simply a list of the services available, each with a list of the hosts permitted to use the service.