... SIP IP PBX with 8 Ext. Video terminals Mobile extension with WiFi smartphone ... cost-effective, fully featured unified communications system for small businesses that delivers more—integrated voice ... Spectrum: DSSSModulation: BPSK, QPSK, CCK, OFDM, 16-QAM, 64-QAMRx Sensitivity: OFDM 54M -73/- ... , queuing, operator handling, soft console for call monitoring and click to transferIncoming calls DID, caller ...