RCA 2 Line Speakerphone with Call Waiting/Caller ID Two-line convenience with distinctive ring and line in use indicators for each line-meets demands Full performance speakerphone with hands-free dialing Three Way call conferencing-permits three parties to be linked together for conference calls Line-Switchable Data Port for Fax, Modem, or Answerer-adds versatility Easy to read LCD display with jog control and forward/reverse call review-clearly displays caller's phone number or name