Specifications

4. HARDWARE DESCRIPTION
4.1 KSU (Key Service Unit)
The KSU of the NX-series is a single cabinet, wall mounted, metal cased unit,
containing the following:
● Power Supply
● Processing, switching, and customer memory for all ports.
● Internal music source and External music interface
● 2 Power Failure Transfer
● Back-up Battery for memory protection
● Real Time Clock (RTC)
NX-308 SYSTEM NX-820 SYSTEM NX-1232 SYSTEM
3 Trunk interfaces 4 Trunk interfaces 8 Trunk interfaces
1 keyset, 7 Hybrid 4 KTS and 8 SLT 8 hybrid and 8 SLT
station interfaces station interfaces station interfaces
4.2 EXPANSION CARDS & OPTION BOARDS
● NX-2TRK card provides two loop start trunk interfaces.
▷ can be installed NX-820 and NX-1232 system.
● NX-4TRK card provides four loop start trunk interfaces.
▷ can be installed NX-820 and NX-1232 system.
● NX-4KLI card provides four ports for keysets.
▷ can be installed NX-820 and NX-1232 system.
● NX-4SLI card provides four SLI ports for industry standard single line telephones.
▷ can be installed NX-820 and NX-1232 system.
● NX-4OPX card provides four OPX line port for industry standard single line
telephones and can be connected to PBX lines.
▷ can be installed NX-820 and NX-1232 system.
● NX-8KLI card provides eight ports for keysets.
▷ can be installed NX-820 and NX-1232 system.
● NX-8SLI card provides eight SLI port for industry standard single line telephones.
▷ can be installed NX-820 and NX-1232 system.
● NX-MPD board provides two ports for metering pulse detection.
▷ can be installed NX-820 and NX-1232 system.
● NX-PRS board provides two ports for polarity reverse signal detection.
▷ can be installed NX-820 and NX-1232 system.
● NX-SMDR/R-MMC board provides two serial ports for SMDR and
REMOTE MMC.
▷ can be installed all NX-SERIES system.
● NX-DPH/PAGING board provides two DOOR PHONE interface and one
EXTERNAL PAGING interface.
▷ can be installed all NX-SERIES system.
NX-SERIES HYBRID KEY SYSTEM GENERAL DESCRIPTION SECTION
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1GENERAL 1999.9.15 12:46 PM 페이지10