If you are like me and use headset, need a speakerphone, mute, flash, and caller ID and ordered this phone I am sure you have figured out by now the Caller ID function is absolutely worthless unless you have the phone mounted on the wall or are willing to lift it up to see it everytime someone calls. Thankfully I still have my battery powered GE caller ID box I can still use..I EXTREMELY dissapointed these phone makers try to rope us into these multi line expnsivve system, had I not already expensed the phone I would send it back based on this fact alone.