This Dialogic D4PCIU 4-Port Universal PCI Voice/Fax Telephony Board is an ideal choice for those in need of a reliable and efficient voice and fax solution. With its 4-port capability, it can handle multiple calls simultaneously, making it perfect for businesses with high call volumes. The board is compatible with a variety of systems and can be easily integrated into existing networks. Its model number is D/4PCIU 4/F/S, ensuring you get the exact product you need.