product description:
Yealink optima hd voice codecs: opus, g. 722, g. 711(a/ų), g. 723, g. 729ab, g. 726, ilbc dual-port gigabit ethernet display: 4. 3" 480 x 272 pixel color with backlight dual-color leds 4 soft keys 10 line keys can be programmed with up to 27 features on 3 page view built-in usb port allows support for bluetooth headset with bt40 dongle up to 16 sip accounts paper label-free design local phonebook with up to 1, 000 entries rj9 headset port with ehs support (see ehs36 wireless headset adapter) supports up to 6 exp40 expansion modules stand with 2 adjustable angles wall mountable (with kit wmb-t46) poe 802. 3af power supply not included (ps5v2000us) upgrades from t46g device performance enhancement with faster response on the phone s user interface opus support enhanced speaker performance united firmware hearingpatible handset
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