The Poly Edge E100 IP Phone is a corded desktop phone that can also be wall-mounted. It features 4 lithium-ion cells, weighs 0.88 pounds, and has a memory storage capacity of 128.0. This black phone by HP Poly Voice is designed for single-line operation and has a basic conference call capability. It is compatible with VoIP services, PSTN, ISDN, answering machines, and fax machines. With a sleek design and reliable corded electric power source, the Poly Edge E100 IP Phone is a versatile and efficient communication device for any enterprise networking setup.