Nortel M7310 Norstar Telephone NT8B20 Black Sometimes Northern Telecom, Nortel, Ameritech. Same part number. This is a full featured phone designed for users with more extensive calling and call handling requirements and ideal for users who often call the same customers, suppliers, or accounts. The LCD window and soft keys make this telephone extremely easy to use CLEANED GOOD CONDITION WITH NEW HANDSET CORD, BASE AND HANDSET INCLUDED Norstar M7310 Features 10 programmable line or feature buttons 12 dual function memory buttons provide quick access to 24 additional frequently-used features or autodial numbers 2-line by 16-character LCD windo and soft keys See the status of up to 24 telephones by adding a BLF Compatibility The Nortel Norstar M7310 telephone is compatible with all releases of Norstar CICS and MICS Also compatible with IP Office and Quick Version equipped with IP500 TCM8, IP500 Digital Station 16A, or IP500 Digital Station 30A This phone is for use with a Nortel business phone system