Microsoft's directory system, which consolidates a network's user and device information.
address signaling
The process of transmitting dialed digits.
a-Law
A companding (that is, COMpressing exPANDING) algorithm used in countries outside the U.S. and Japan, which has a superior signal-to-noise (S/N) ratio for lower-volume samples, as compared to u-Law.
aliasing
Reconstructing samples incorrectly due to a lack of sufficient samples being taken.
alternate mark inversion (AMI)
An approach of representing binary 1s as voltages with alternating polarities.
amplitude
The volume of a waveform.
analog
A continuously varying waveform.
auxiliary VLAN
The VLAN (that is, subnet) used to carry voice packets.
availability
A measurement indicating the likelihood that the network is up and functioning.