Technical Specifications 

• CO. line 2-4 
• Ext. line 8-16 
• Multiple Communications Line 
• normal transform power 
• Switch Power (Optional) 
• Backup battery interface (Optional) 
• Power Failure Transfer 
• External Line Caller ID 
• Auto-Attendant(DISA-20s three paragraph)-OGM  60s or 90s for optional 
• Transfer caller ID 
• Intercom caller ID 
• Outgoing Message Recording 
• Internal Music on holding 
• Remote programming 
• Memory protection while power off 
• Auto/Operator mode 
• System Password 
• Flexible Ext. No. Assignment 
• Multiple Dial-Out Mode 
• External line group 
• Call Duration Control 
• Call Pickup 
• Outgoing Call Transfer 
• Call Transfer 
• Call Forwarding 
• Flexible coding(change Ext.No.) 
• Do Not Disturb 
• Automatic EX Reporting 
• Flash Time Choice 
• Ringing Assignment 
• Call Restriction 
• Three Way Conference 
• Call all extensions 
• Specific Co line dialing 
• Ring identify 
• C.O line Booking 
• C.O line Reservation 
• Operator setting 
• C.O Monitor