Video-ready access device

FTTN, widely used where copper facilities exist in established neighborhoods, uses an Alcatel-Lucent 7330 Intelligent Services Access Manager (ISAM) shelf,[2] which uses the existing copper wiring to customers' homes, leading to distance limitations from the VRAD cabinet to the customer's home.

[1] The FTTP system uses an Alcatel-Lucent 7340 ISAM shelf, which is mostly used in areas such as new neighborhoods or large-scale developments where fiber can be run to the household, removing the distance limitations of copper.

In FTTP systems, the fiber pairs are typically led into a customer's residence at the network interface device.

[4] Four VRADs have exploded due to faulty lithium-ion batteries manufactured by Avestor (now bankrupt), at least one explosion sending parts "fifty feet throughout the neighborhood."

Bell Canada uses the Alcatel-Lucent 7330 and Ikanos Communications IKNS ISAMs, and provides Internet service via either FTTN to 50 Mbit/s, or FTTH (fibre to the home) to 1.5 Gbit/s.

Cross-connect box (left) and VRAD (right) on a suburban street in Houston, Texas.