(1) See
network access server.
(2) (
Remote
Access
Service) A Windows Server feature that allows remote users access to the network from their Windows laptops or desktops via modem. See
RRAS and
network access server.
(3) (
Registration,
Admission and
Signaling) In an H.323 audio or video system, the RAS is a control channel over which H.225 signaling messages are sent. It provides a central point that all devices monitor for an incoming call signal. See
H.225 and
H.323.
(4) (
Reliability
Availability
Serviceability) Originally an IBM term, it refers to a computer system's overall reliability, its ability to respond to a failure and its ability to undergo maintenance without shutting it down entirely.
(5) (
Row
Address
Strobe) A clock signal in a memory chip used to pinpoint the row of a particular bit in a row-column matrix. See
CAS.