GDK-100
DIGITAL KEY TELEPHONE SYSTEM
65
3.4.2 MPB Installation
The MPB is installed in the right most PCB card slot (slot MPB) of the BKSU or SBKSU. The MPB may be
equipped with 4 add-on boards; a MEMU for memory expansion, a SMEMU for memory expansion, QSIG,
TAPI and/or PC-ATTENDANT, a MODU for modem access to the system, and a PLLU for system
synchronization. See Figure 3.4.2.
Lithium Battery
The MPB contains a lithium dry-cell to maintain memory and real-time clock functions. The battery is
soldered on the MPB, and connected circuitry by on-off DIP switch. So the switch is set to ON position before
the MPB installation.
“ CAUTION : Danger of explosion if battery is incorrectly replaced. Replace only with the same or
equivalent type recommended by the manufacturer. Dispose of used batteries
according to the manufacturers instruction.”
Function of SW2
The MPB also has an eight-position DIP switch, SW2. The function of each switch position is as followings:
Default setting: All ON position
Switch
Function
OFF
ON
1
Administration Programming Access
Disable
Enable
2
CTS (Send to Clear) of RS232
Enable
Disable
3
Command/Event Trace (The purpose of testing software)
Enable
Disable
4 Not
used
-
-
5
SMDI (Simplified Message Desk Control –Voice Mail )
SMDI ON
SMDI OFF
6 Not
used
-
-
7
Power up status trace of board
Enable
Disable
8
Database default on power up
Disable
Enable
Table 3.4.2
The function of each pole of SW2
Before programming the system, switch 8 should be placed in the on position and power cycled off and on
to initialize the system database to default. Once the database has been initialized, switch 8 should be
placed in the off position so as to protect the database.
After the lithium batteries(SW3 ON) and Add-on boards installed, insert the MPB in slot MPB of BKSU or
SBKSU.
Function of various switches and connectors
Switch/Connector
Functions
Remark
SW1 CPU
Reset
SW3
Lithium Battery ON/OFF switch
CONN5 and CONN6
PLLU connection
ISDN 1)
CONN7 and CONN8
MEMU or SMEMU connection
CONN9 and CONN10
MODU Connection
RS1
RS232C Serial Interface
System Access
Содержание GDK-100
Страница 2: ...GDK 100 DIGITAL KEY TELEPHONE SYSTEM ii Blank sheet ...
Страница 52: ...GDK 100 DIGITAL KEY TELEPHONE SYSTEM 43 LKD 2NS LKD 8DS LKD 30DS LKD 30LD Figure 2 4 3 LKD Digital Keysets ...
Страница 53: ...GDK 100 DIGITAL KEY TELEPHONE SYSTEM 44 GSX 8BTN Figure 2 4 4 GSX Electronic Keysets GSX 33 EXE ...