PLANET VIP-1010PT - Manual (Page 8)

High Definition PoE IP Phone (1-Line)
VIP-1010PT
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High-quality HD VoIP Voice
The VIP-1010PT delivers HD voice (High-definition Voice) which is the next
generation of voice quality for telephony audio, making the quality of voice better
than that (toll quality) of the standard digital telephony and even close to that of a
room conversation. HD voice is transmitted in the audio frequency range of 50 Hz to
7 kHz or higher over telephone lines, resulting in higher quality voice and clearer
communication.
Standard Compliance
The VIP-1010PT supports Session Initiation Protocol 2.0 (RFC 3261) for easy
integration with general voice over IP system. The VIP-1010PT is able to broadly
interoperate with equipment provided by VoIP infrastructure providers, thus
enabling them to provide their customers with better multi-media exchange
services.