I DATA LINE SECURITY

DATA LINE SECURITY
Description
Data transmitted over analog CO lines is subject to distortion and errors if system tones such as Camp-On and Override are applied during transmission. To eliminate such errors, stations that use analog data (modems or Fax) can be assigned to block incoming system tones.
Operation System System tones are automatically blocked when Data Line Security is assigned

Data Line Security

Data Line Security
Data Line Security protects any station port from receiving audible tones (such as Camp-On or Override) and denies a station from barging in while busy to prevent disruption of data transmission when using a modem or facsimile machine.
Conditions
• When a Multiline Terminal and a Single Line Terminal are assigned for Data Line Security, Tone Override/Voice Override and Call Alert notification tone are not heard over the handset speaker.
• Data Line Security protects a station from Barge-in, even when Barge-In is allowed in Class of Service.
• When any Multiline Terminal or Single Line Terminal calls a station with Data Line Security, a constant busy tone is heard.