Placing equipment owned by a customer or competitor in an organization's own facility. Telephone companies often allow co-location in order to provide the best interconnection between devices.

Ping Power Pipe
ISPs offer co-location by providing space, power and a link to the Internet for their customers' servers. They do not perform maintenance or troubleshooting, only a repetitive test to make sure the servers are running. The customer will be notified if the server fails. Known as a "ping power pipe" arrangement, "ping" means sending a packet to the server to see if it responds, "power" is electricity, and "pipe" is the line to the Internet.