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Abbreviations and Terminology4
General Information
Codecs:
Compression (and decompression) of audio data, in real time,
before transportation via the Internet Protocol, thus reducing net-
work 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 applications that use Microsoft Windows.
TSP (TAPI Service Provider):
Hardware-dependent driver module providing TAPI functionality
for specific devices (e.g. for the Forum 500).
VAD (Voice Activity Detection):
Recognizes speech pauses that are then not sent so as to reduce
network load.