AT&T 3.0 manual Qcc, Ram

Glossary

processor module	Module in the second slot of the control unit (Slot 0, to the
	right of the power supply module). Includes the software
	and memory that runs the system.
programming port	Reassignment of the system programming jack position to
reassignment	any of the first five extension jacks on the first MLX module
	in the control unit.
protocol	Set of conventions governing the format and timing of
	message exchanges between devices, such as an MLX
	telephone and the control unit.
public network	Network that is commonly accessible for local or long-
	distance calling. Also called “public switched telephone
	network. ”

Q

QCC

(Queued Call Console) MLX-20L telephone used by a system operator in Hybrid/PBX mode only. Used to answer outside calls (directed to a system operator position) and inside calls, direct inside and outside calls to an extension or an outside telephone number, serve as a message center, make outside calls for users with outward calling restrictions, set up conference calls, and monitor system operation.

R

RAM

read-only memory

(random-access memory) Computer memory in which an individual byte or range of bytes can be addressed and read or changed without affecting other parts of memory.

See ROM.

Maintenance and Troubleshooting GL-27