Multi-Line Extension telephone

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1	Visual Indicators ISDN sets provide visual indication of set busy status and call processing information. To do this, the set has a display and a number of red and green lights, usually associated with a call appearance Add to Reading List Source URL: www.doa.louisiana.gov Language: English - Date: 2013-12-13 13:14:05 Dial tone Conference call Rotary dial Integrated Services Digital Network Telephone Telephone call Multi-Line Extension telephone Telephony Electronic engineering Call forwarding