• CPS-P1696-PA (expandable, minimum capacity is 4/16, and maximum capacity is 4/48
• CPS-P1696-PB (expandable, minimum capacity is 8/48, and maximum capacity is 8/96 or 16/80
• Switch Power with backup battery interface
• Auto-attendant(DISA: 20s three paragraphs)
• Auto/Operator Mode
• Second auto-attendant(DISA: 20s three paragraphs, only for PB)
• Reverse Polarity Signal
• Auto IP dialing
• Day/night mode(auto)+ Alarm clock
• Doorphone function & door-open interface
• Private Password & System Password
• External Broadcasting Interface
• Auto Routing
• Ext Group
• Call Switch
• Keyphone Function & Transfer Caller ID(optional)
• PC Billing System(optional)
• 4 jacks of C.O. line expansion card(optional)
• 8 jacks of Ext. expansion card.(optional)