KEY FEATURES:

• Flexible Ringing (on incoming calls on any ext)
• Call Pickup & Call Waiting
• Call Transfer – To Extension – To Outside (CO) Line
• DISA (Direct Inward System Access) with message (3-level, 1ch, 180sec)
• Music on Hold / Background Music (BGM)
• Automatic Callback Busy (Camp-on)
• Limited Call Duration (1~32 minutes) lock target extensions
• Executive Busy Override (Extension / CO Line
• Caller ID display on SLT and  APT
• Battery Backup Interface (Built – in)
• Call Forwarding – All – Busy / No Answer – Follow Me
• Speed Dialing – System – Personal
• Door phones, Door Openers, and Doorbells
• Preferred Line Assignment – Incoming – Outgoing
• PC programming (USB/RS232C) and easy maintenance
• Budget management
• Call charge calculation