1702 Grandstream HT814 ATA

One 6P4C male to two 6P4C RJ11

Full-duplex speakerphone with HD acoustic chamber, advanced acoustic echo cancellation, 3 directional mics with MMAD & microphone beam-forming array and 1 omni-directional auxiliary microphoneIntegrated dual-band 802.11 a/b/g/n/ac Wi-Fi and Bluetooth