General Information Abbreviations and Terminology
4
1.1 Abbreviations and Terminology
AEC (Acoustic Echo Cancellation):
Filters out frequencies emitted by the speaker that would be picked up by the
microphone, preventing the caller at the other end from hearing their own echo.
Codecs:
Compression (and decompression) of audio data, in real time, before transpor-
tation via the Internet Protocol, thus reducing network load.
DirectSound:
Application programming interface developed by Microsoft for controlling the
sound card. Makes it possible to simultaneously output the audio data of multiple
applications.
Dynamic Jitter Buffer Adjustment:
Smooths out delays caused by varying network utilisation, that can occur during
transportation of real-time audio data via the Internet Protocol.
RAS (Remote Access Server):
Makes the creation of a network connection via a modem, ISDN or DSL possible.
RTP / RTCP (Real Time Protocol / Real Time Control Protocol):
Protocols for transporting real-time audio data via the Internet Protocol.
Skin:
Interchangeable graphical user interface.
TAPI (Telephony Application Programming Interface):
A programming interface developed by Microsoft and Intel for telephony applica-
tions that use Microsoft Windows.
TSP (TAPI Service Provider):
Hardware-dependent driver module providing TAPI functionality for specific
devices (e.g. for the the OpenCom 100, OpenCom X300 and OpenCom 1000).
VAD (Voice Activity Detection):
Recognizes speech pauses that are then not sent so as to reduce network load.
To Next Page
Loading...
