The Thor Fiber F-16TEL is used for carrying 16 phone lines over fiber optic cable. Extend Telephone over Fiber applications offer a secure connection that is impossible to bug. The PSTN two-wire POTS telephone port can be configured either as an FXO (PBX trunk) or FXS (telephone set/fax machine/dial-up modem) device just by a simple DIP switch setting. Using a pair of these devices, 16 independent telephone lines can be extended over a fiber link. The F-16TEL provides full service for features like caller ID. The converter can be used in service mode, allowing the connection of 16 telephone sets. The F-16TEL is a simple and reliable solution for data carriers and service providers for Telephone over Fiber links.