19 May 2012
KX-NT300 peer-to-peer (P2P) compatible IP extensions automatically establish P2P communication
when connected to a KX-TDE or NCP IP PBX.
In Peer-to-Peer mode, the call set-up and tear-down signalling travels between the IP phones and the PBX while the
audio communication happens directly between the two IP phones. 
By using Peer-to-Peer mode, the KX-NT300 series:
KX-NT300 supports wideband CODEC G.722 enabling peer-to-peer, high quality voice communication. Voice band is expanded from a maximum of 3.4kHz to a maximum of 7kHz. The sampling rate is 16kHz, which is double that of traditional telephony interfaces, resulting in superior audio quality and clarity. This vastly improves handset and speakerphone quality.
