TECHNICAL REFERENCE8-1Front-of-the-Case Lights (External Faxmodems) ................8-2Top-of-the-Case Lights (Voice Faxmodem Pro Externals) ..8-3Typing Commands ..................................................................8-4Basic Data Commands ............................................................ 8-5Extended Data Commands ................................................... 8-12DIP Switches.........................................................................8-20S-Registers ...........................................................................8-22Fax Commands ......................................................................8-33Screen Messages .................................................................8-36The Serial Interface.............................................................. 8-37Serial Interface Pin Definitions ..........................................8-38