sentences:  This switch is closely related to the Cisco Catalyst 2820 series, which uses the same software, and shares many of the same features
  
  The 1900 series software was available in two editions.Whilst the enterprise edition's Command Line Interface (CLI) had a strong similarity to IOS, the switches ran a unique software which was neither IOS or CatOS.The last software version released was 9.00.07 (2003).