... of setting file as per date automatically, easy to check, e.g.,if the date is Mar. 21, 2012, then ... is suitable for exterior local calls, interior unit extension, simulated telephone line derivative by ISDN.Quality AssuranceHardware 3 years replaces, 5 ... years warranty, software life long free upgrade.Basic Functions1. Internet telephone recording system: local and remote monitoring, query and stats; ...