
Abbreviations and Terminology General Information
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General Information
The Forum IPhone PC is a system terminal that can be operated using the 
Forum 500 / Forum 5000.
This system terminal is a PC-software based communications solution. No 
specific hardware, other than the communications system, is required to 
operate the Forum IPhone PC. The Forum IPhone PC’s technology is based on 
VoIP (Voice over Internet Protocol).
The Forum IPhone PC is available in two different versions: one with an active 
telephone user interface and one without a user interface. The 
Forum IPhone PC without the user interface can be integrated into Microsoft 
Outlook (for outgoing calls). 
For the Forum 500 / Forum 5000 communications system, PC versions of 
the Forum Phone 525 and Forum Phone 535 are available, but not for the 
Forum Phone 515.
In this user guide, those features of the Forum IPhone PC which set it apart 
from the hardware-based system telephones will be described.
Note: For more operation information, please refer to the “the 
Forum Phone 515, Forum Phone 525, Forum Phone 535” user 
guide.
Product-related licence keys are required for the operation of different 
communications systems.
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.