function characteristics * 100 telephone books * fast dialing function * emulational dialing of common telephone * calling transfer and calling holding * under h323-sip protocol, the caller can get status of the called party. * simple volume adjusting * full duplex hands-free function * ip to ip communication * hi-fi and low delay net voice communication * lcd backlight indication * local ip and local number query * query on dialed, received and non-received number * time indication of important worldwide time zones * net to phone hardware terminal * plug and play, double-interface automatic identification * 108 provide extended exchanger function * h.323, sip and mgcp are compatible * ie setting in chinese and english