The cardnest CN4 is a family of concentration units for the different types of Telindus Access equipment.

The family is constituted of one 19" rack-mountable device, and two desktop units. The 19'' rack-mountable system (Cardnest CN4) is equipped with 15 card slots, 30 interface-slots and 2 power-slots. It provides a high-density solution for the Telindus access equipment with densities of up to 30 or 60 modems in one nest (depending on the modem type). Interface plugin modules (maximum two per card-slot position) are plugged into the available interface-slots on the back of the CN4. A high-speed management bus permits the management of all the equipment installed in the CN4.