AC - Access CategoryThe term Access Category is used in wireless networks supporting the IEEE 802.11e Quality of Service standard. There are four defined Access Categorie... View more
AC - Access Class (C0 to C15)AC - Access Class (C0 to C15) In GSM , the Access Class indicates the type of access that is permitted. This class is broadcasted over the air interfa... View more
AC - Attachment CircuitThe physical or virtual circuit attaching a CE to a PE. An AC can be a Frame Relay DLCI , an ATM VPI / VCI , an Ethernet port, a VLAN , a HDLC , a con... View more
Access CodeIn Bluetooth, each baseband packet starts with an Access code, which can be one of 3 types: CAC (Channel Access Code), DAC (Device Access Code) and IA... View more
Access Control MethodThis is the main distinguishing feature between different LAN (Local Area Network) technologies. It regulates each workstation's physical access to th... View more
Access delayThe Access delay is the value of elapsed time between an access request and the successful access of the network. ... View more
Access ProtocolA set of specific procedures that enable a user to obtain services from a telephone company or network. ... View more
Access ServerCommunications processor that connects asynchronous devices to a LAN (Local Area Network) or WAN (Wide Area Network) through network and terminal emul... View more
Access Stratum SDU - Access Stratum SDU (Service Data Unit)Unit of data transferred over the access stratum SAP (Service Access Point) in the Core Network or in the User Equipment. ... View more
ACCH - Associated Control ChannelThe GSM signalling channels associated with a user's traffic channel or dedicated signalling channel. Two ACCH are defined for GSM Circuit Switched op... View more
Account CodeA numeric code that identifies the calling party for internal billing or accounting purposes. Account codes are often used by service companies such a... View more
AccountingAccounting is the process of apportioning charges between the Home Environment, Serving Network and User. ... View more
AccuracyThe Accuracy indicates the performance criterion that describes the degree of correctness with which a function is performed. ... View more
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
