1. System Overview
The NX-828 system is an analogue telephone system designed for small to medium-sized
businesses and for meeting CE (EMC + safety) regulations as well as the related PTT
regulations. The system has a maximum capacity of forty (40) ports, being the sum of telephone
lines and stations-the combinations of which are flexible. Comprising only a Key Service Unit
(KSU), option cards, electronic keysets and conventional single line telephones, the system
offers small or medium-sized business user's the flexibility and control of telephone
communications. A powerful HM64180R1 microprocessor digitally controls all speech paths and
system functions. The operating program with default memory is stored in non-volatile ROM 27C
020. Customer data is stored in RAM 681000 and is protected by a rechargeable Ni-Cd battery
for up to seven day's continuous loss of system power.
2. System Configuration
The basic KSU comes equipped to operate four (4) telephone lines and twelve (12) stations.
Stations from #1 to #4 are assigned to keysets, and stations from #5 to #12 are assigned to
single line telephones.
The NX-828 system has several types of option card: the NX-4TRK, NX-
8KLI, NX-8SLI and NX-4OPX card can be installed in any slot of the three expansion slots. By
combining these cards, the system can be increased to its maximum capacity of forty (40) ports.
Optionally, the NX-SMDR/R-MMC and NX-DPH/PAGING cards can be installed on the base
board for value-added features.
The NX-SMDR/R-MMC card is the serial interface card for SMDR and Remote MMC, and the
NX-DPH/PAGING card is the door phone and external paging interface card. The NX-MPD
Hybrid IC (50Hz, 12 or 16KHz) can be installed on the base board and the NX-4TRK option card
for four (4) trunk ports up to a maximum of four per card. The chart below describes
configurations using option cards.
NX-828
HYBRID KEY SYSTEM
GENERAL DESCRIPTION
1 - 2
Bas e Boar d
Bas e Boar d and 1 ex pans ion s l ot
Bas e Boar d and 2 ex pans ion s l ots
Bas e Boar d and 3 ex pans ion s l ots
12
20
2 8
3 6
N o. of Sta tio n s
1 6
1 2
8
4
Содержание NX-828
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