Expandable System: Supports interconnection of up to 8 systems, allowing expansion to accommodate up to 1,400 extensions. 

Caller Line Identification (CLI): Displays the calling number, aiding in identifying callers. 

Flexible Extension Numbers: Allows configuration of extension numbers ranging from 2 to 4 digits, providing flexibility in numbering schemes. 

Extension Groups: Offers three extension groups—Apartment, Security, and President—each with specific calling capabilities, enhancing organizational communication. 

Easy Installation: Comes with RJ11/RJ45 leads for straightforward setup, simplifying the installation process. 

Internal Conference: Enables all extensions to join a group call, facilitating internal discussions and meetings. 

Auto Call Back: If an extension is busy, the system will automatically call back when the line is free, ensuring communication is not missed. 

Emergency Call Feature: Dialing a specific code from an extension can initiate an emergency call to selected extensions, enhancing safety. 

Guard Display Units: Up to 8 display units can be connected for security personnel, providing real-time information and alerts. 

Broadcast or Message Announce: Allows broadcasting messages or announcements to all extensions, ensuring important information reaches all residents.

Alarm Clock and Call Transfer: Features an alarm clock for reminders and the ability to transfer calls to other extensions, enhancing functionality.