Grandstream DP722, Wireless DECT Phone, 5 Phones per BS, Colour Display, With cgarger and Power Supply

Wireless interface Standard: DECT; Frequency range: 1880 – 1900 MHz (Europe), 1920 – 1930 MHz (USA), 1910 – 1920 MHz (Brazil), 1786 – 1792 MHz (Korea), 1893 – 1906 MHz (Japan), 1880 – 1895 MHz (Taiwan); Number of channels: 10 (Europe), 5 (USA, Brazil or Japan), 3 (Korea), 8 (Taiwan); Outdoor coverage area: up to 350 meters (DP752) or up to 300 meters (DP750); Indoor coverage area: up to 50 meters. 1.8 inch (128x160) TFT LCD color screen 23 buttons: 2 on-screen buttons, 5 navigation/menu buttons, 4 special keys (SEND, POWER/END, SPEAKERPHONE, MUTE); 3-color MWI LED; 3.5mm headset jack; Removable clip for attachment to the waist belt; Micro-USB port for additional charging and use without batteries Protocol/Standards Compatible with hearing aids (HAC) Speech codecs G.722 codec for HD audio and G.726 codec for narrowband audio (G.711µ/a-law, G.723.1, G.729A/B, iLBC and OPUS are supported via DECT base station), AEC, AGC, Acoustic noise suppression at the microphone tube, advanced noise suppression for incoming sound Telephony functions Hold, transfer, forwarding, 3-way conference, push-to-talk, intercom, call parking, call interception, downloadable phonebook, Call waiting, Call log, answering machine, click-to-dial, flexible number plan HD Audio In the handset and in the speaker of the speakerphone Safety DECT authentication and encryption Language support Russian, English, Czech, German, Spanish, French, Hebrew, Italian, Dutch, Polish, Portuguese, Swedish, Turkish, Arabic, Chinese Simplified, Chinese Traditional, Japanese, Korean, Slovak, Serbian Update/Customization Over-the-air Software Update (SUOTA), over-the-air tube setup Supported lines Up to ten (10) lines can be connected to each tube Energy efficiency and environmental friendliness Universal power supply Input: AC 100-240V 50/60Hz; Output: 5VDC 1A; connection via Micro-USB; 800mAh Ni-MH (LSD) AAA batteries with low self-discharge (250 hours of standby and 20 hours of talk time) Package contents Tube, universal power supply, charger, clip, 2 batteries, instructions for getting started Temperature and humidity Operation: -10º to 50ºC;