... telephone fuction 3.use:hotel,office, house decoration Pruducts specifications: 1, volume adjustment function; 2, dial keys 3, clock, date,Caller ID ... display fuction4, FSK / DTMF dual mode, 30 groups caller ID records, call-back, and ... packaging, carton packaging. box contains:1.use Manual2.telephone line3.Guarantee service card 4.Product certification Warranty: teh ...