From HEXONET Wiki
Besides the .TEL domain and a CTH User, a so-called CTH Zone is needed to manage a .TEL domain. The CTH user which has to be generated before the zone, has to be specified in the command:
command = TELNIC_CTH_CreateZone domain = <DOMAIN> X-TEL-CTH-LOGIN = <TEXT> (optional) synchronized = 0 | 1
Further details regarding .TEL and the use of the TELNIC specific commands can be found at the .TEL wiki page.