The CPU Card is the system’s control center. It provides the system’s Linux operating system, central processing, stored program, and memory for the customer’s site-specific data. Every system requires a CPU Card. In addition, it also provides:
- CompactFlash card interface (for IntraMail, software loading, and database backup)
- Conference circuits, DTMF receivers and DTMF generators
- Real Time Clock
- NAND Flash for storing the system database
- Battery for short term (14 day) backup of the Real Time Clock and station parameters
- Two audio inputs for Background Music and Music on Hold (1/8” mono minijacks)
- One audio output for External Paging (1/8” mono minijack)
- Ethernet and USB ports for local and remote PC Programming
- RS-232 serial port for Station Message Detail Recording
- Built-in V.32BIS 14.4K BPS modem for remote maintenance
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