You may connect up to 24 keystations to the system. More than 24 KLI connections may cause
problems with system features.
3.
Hardware Description
3.1
Key Service Unit (KSU)
The
NX-828
system is a single cabinet, wall mounted, metal-cased unit containing the
following:
¡Ü
Power Supply
¡Þ
System main DC regulator from AC 230V, 50Hz
¡Þ
Sinusoidal ring signal generator
¡Þ
Battery charging/ Re-charging circuitry
¡Þ
DC power regulator for single line telephones
¡Þ
+12V DC power regulator and -5V DC power regulator
¡Ü
Connection Board
.
¡Ü
Base Board
- Four (4) loop start trunk line interface circuitry with Metering Pulse Detectors
(optionally, 50Hz, 12kHz or 16kHz)
- Four (4) keyset interfaces and eight (8) single line telephone interfaces
- 16 speech paths
- Internal music source and external music interface
- Two (2) power failure transfers (trunk #1, #2 - station #11, #12)
- Memory back-up battery
- Real-time clock
- Four (4) connectors for Metering Pulse Detectors related to four (4) trunks
- Connector for NX-DPH/PAGING card and NX-SMDR/R-MMC card
- Three (3) expansion slots
- +5V DC power regulator
3.2
Option Cards
¡Ü
NX-4TRK
card provides four (4) loop start trunk interfaces, with Metering pulse Detectors
(optionally, 50Hz, 12KHz or 16KHz).
¡Ü
NX-8KLI
card provides eight (8) ports for keysets.
¡Ü
NX-8SLI
card provides eight (8) single line telephones indoors.
¡Ü
NX-4OPX
card provides four (4) line telephones outdoors.
¡Ü
NX-SMDR/R-MMC
card provides two serial ports for SMDR and Remote MMC.
¡Ü
NX-DPH/PAGING
card provides two door phone interface and one external paging
interface.
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NX-828
HYBRID KEY SYSTEM
GENERAL DESCRIPTION
Summary of Contents for NX-828
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