Initial establishment of the connection was made using "contact names." These names identified the network service and higher-level protocol. For example, "STATUS" was the contact name which requested basic network statistics from a host. "TELNET" was a contact name for the Arpanet TELNET protocol. "FILE" was a contact name for the Lisp Machine network file service. Other contact names included "SUPDUP", "MAIL", "NAME" for the Arpanet Finger protocol, "TIME", "SEND" for interactive messaging, "ARPA" for a gateway service to Arpanet. "DOVER" was the contact name for sending print jobs to Chaosnet hosts with a Xerox Dover printer attached (an early laser printer). Developers could easily experiment with new protocols by inventing new contact names. In ITS, a new server for that protocol could be installed by creating a link to the program in the location DSK:DEVICE;CHAOS <cname> where <cname> was up to six letters of the contact name.