Interactive subscriber telephone terminal with automatic management software download feature

Abstract From the Canadian patent

Interactive subscriber telephone terminals have a display screen and softkeys which are controlled by management software. The management software may be downloaded from a remote server to control the display and softkeys. Different techniques for achieving this download are described. In one case each subscriber terminal has a memory in which can be preloaded a list of one or more Calling Line ID numbers corresponding to the telephone number of a server(s). If a server dials the subscriber terminal the calling line ID is compared with the list and, if there is a match the terminal, immediately goes off-hook and follows the protocol for a Server Initiated Download. In an alternative case …