... direct push buttons, good hotel use good hotel phones hotel telephone1.One key connect+10+8+5+3+0. ... under FSK system.7.80 incoming number and time store, review, callback and del function.8.25 outgoing number and ... time store, review, callback and del function.9.3 way conference and ... talk, standard flash time is 900ms. 16. Can print hotel logo. hotel phone