ACD - Automatic Call DistributorA device that handles a large number or incoming calls. An ACD performs four functions: first, it recognizes and answers incoming calls; second, it lo... View more
ACELP - Algebraic Code-Excited Linear PredictionA process employed in analysis by synthesis codecs in order to predict the filter coefficients required to synthesize speech at the receiving party. T... View more
ACF - Admission ConfirmAn H.225 message sent by a H.323 Gatekeeper to an endpoint that has requested access to the zone controlled by the Gatekeeper. This message indicates ... View more
ACI - Adjacent Channel InterferenceThe phenomenon whereby channels that are beside one another in the frequency domain may have some spectral overlap, causing impairment and interferenc... View more
ACID - HARQ Channel IdentifierThe ACID (HARQ Channel Identifier) Differentiates channels within a HARQ (Hybrid Automatic Repeat Request) connection. ... View more
ACL - Access Control ListA roster of users and groups of users, along with their access rights. ... View more
ACLR - Adjacent Channel Leakage RatioThe Adjacent Channel Leakage Ratio is the ratio of the on channel transmit power to the power measured in one of the adjacent channels. ... View more
ACM - Accumulated Call MeterThe accumulated charge for both the current call and all proceeding calls. This value is calculated by the MS (Mobile Station) and expressed in home u... View more
ACM - Address CompleteAn ISUP (ISDN User Part) signalling message sent by the destination switch indicating that a switched circuit has been established to the requested en... View more
ACMC - Access Channel Message CapsuleThis term is given to the AC (Access Channel) message plus any additional overheads or padding. ... View more
ACO - Additional Call OfferingAn ISDN feature that allows multiple calls to be placed simultaneously to the same telephone number. A serving switch is programmed with the number of... View more
ACP - Automatic Call ProcessingA system in which calls are processed entirely by computer. ... View more
ACR - Access Channel RequestAn Access Channel Request is a message that is autonomously generated by the MS (Mobile Station) and is used to request radio resources from the netwo... View more
ACR - Accounting RequestA Diameter message used by network nodes to supply billing related information to the offline charging system.... View more
ACS - Access Channel SlotThe assigned time interval for an access probe. An Access Channel slot consists of an integer number of frames. The transmission of an access probe is... View more
ACS - Adjacent Channel SelectivityThis relates to the ability of a radio receiver to correctly receive the desired radio channel in the presence of strong adjacent signals. ... View more
ACSE - Application Control Service ElementThe Application Control Service Element is a Layer 7 protocol used in the management of two peer entities by either connecting releasing or aborting t... View more
Active CommunicationA UE (User Equipment) is in active communication when it has a CS (Circuit Switched) connection established. For PS (Packet Switched) operation, activ... View more
Active ModeIn the Active Mode, the Bluetooth unit actively participates on the channel. The master of the piconet schedules the transmission based on traffic req... View more
Active MonitorA node on a Token Ring network which purges the ring and generates a new token (when necessary), initiates and monitors neighbour notification, and ma... View more
