Q.2931
An ATM /a signalling protocol from the ITU /i.

Q.SIG
A symmetrical adaptatation of N-ISDN signalling (DSS1) for inter-PBX signalling.

QA
Quality Assurance.

QAM
Quality Assurance Management.

QBE
A query language.

QD
Queuing Delay: Queuing Delay refers to the delay imposed on a cell by its having to be buffered because of unavailability of resources to pass the cell onto the next network function or element. This buffering could be a result of oversubscription of a physical link, or due to a connection of higher priority or tighter service constraints getting the resource of the physical link.

QIP
Quality Improvement Paradigm.

QOS
Quality Of Service.

QoS
Quality of Service: Quality of Service is defined on an end-to-end basis in terms of the following attributes of the end-to-end ATM connection:

· Cell Loss Ratio

· Cell Transfer Delay

· Cell Delay Variation

QoS
See quality of service (QoS) /.

quality of service (QoS)
The service level defined by a service agreement between a network user and a network provider, which guarantees a certain level of bandwidth and data flow rates.

Quantify
A performance analysis tool from Pure Software - . /Pure

Query language
A language such as SQL SQL whereby users of a database system can interactively formulate requests, generate reports etc.

queue
A first in, first out data structure. Print jobs are queued. See also stack /s.

queue
A waiting line, just as in real life. The most common queue is the print queue, in which the output of lp or lpr commands waits in line to get printed.