Avaya Difinity 7410+ Black Multi-Line Conference Desktop Telephone 7410D01A-003.
 
Avaya Part Number: 7410D01A-003
Model Number: Definity 7410+

-Conference, transfer, drop, select ring, hold, call waiting light
-Can access multiple lines for handling calls, conferencing, call coverage, bridging
-With PC/PBX Connection Card, can also be used for simultaneous voice/data transmission with any compatible PC.