A communications system may include a telephone terminal, a first near field communication (NFC) device associated with the telephone terminal, a mobile wireless communications device, and a second NFC device associated with the mobile wireless communications device. The telephone terminal may have a first caller identification (ID) associated therewith, and the mobile communications device may have a second caller ID associated therewith different than the first caller ID. The telephone terminal may be configured to place a telephone call over a telephone network, and cooperate with the telephone network to substitute the second caller ID for the first caller ID when placing the telephone call based upon NFC communication between the first NFC device and the second NFC device.