Lucent Technologies DEFINITY AUDIX Installation And Upgrade page 202

Glossary
O
Operating System (OS)
The set of programs that runs the hardware and interprets software commands.
Operations, Administration, and Maintenance (OA&M)
A state of system operation where core processes of the Multifunction board are accessed,
including system initialization, resource configuration, forms interface, entry into the maintenance
subsystem, and filesystem access. Also entered when customer data must be restored.
Outcalling
A feature that allows the system to dial subscribers' numbers or go to pagers to inform them they
have new messages.
P
Port
A connection or link between two devices, allowing information to travel through it to a desired
location. For example, a switch port connects to a DEFINITY AUDIX port to allow a subscriber on
a voice terminal to leave a message.
Protocol
A set of specific rules, procedures, or conventions relating to forms and timing of data
transmission between two devices.
R
Reboot
A system reboot is done to clear major system problems (such as corrupt program memory). It
also runs automatically whenever the system is powered up.
Remote Field Update
A set of software changes on a given release that is transmitted from a central location to cus-
tomer equipment. Changes are generally restricted to serious bug fixes and are limited in volume.
Reply Loop Escape
Allows the subscriber the option to return to responding to a message after trying to reply to a
non-subscriber message.
Restart
During maintenance, a system restart brings the system software back into full service, usually
after an administrative shutdown. This is often done to try to clear software problems.
RISC
Reduced Instruction Set Computer. Refers to computers based on an unusually high speed pro-
cessing technology that uses a far simpler set of operating commands.
GL-8 Issue 2 December 1996