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GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM
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Analog CO/PABX Line Interface Boards (LCOB: Loop-start) Installation
The LCOB2, LCOB, LCOBE, LCOBA, and LCOB4 can be installed on the SLOT2 & SLOT3
The exterior of them are shown in Figure 3.4.7.
This board provides two(2) Loop Start ports and four(4) Loop Start ports.
Board Slot Port No.
LCOB2, LCOB4 SLOT2 & 3 4
LCOB, LCOBE, LCOBA SLOT2 & 3 2
[Table 3.4.2] LCOBs
Figure 3.4.7 Analog CO Interface Boards
ISDN STIB2 & STIB (S/T Interface Board) Installation
It should be noted that the STIB2 & STIB board should be installed on the SLOT2&SLOT3 of the MBU.
The STIB2 provides 1 port of BRI(Basic Rate Interface-‘T’ mode only) and 1port of ‘S’ and ‘T’ mode Switchable interface
and STIB provides 1 port of ‘S’ and ‘T’ mode Switchable interface.
Select the jumpers and DIP switches for S0 or T0 interface. Be sure to connect ISDN trunk to T0 interface port and
ISDN extension to S0 interface port. Check if ISDN trunk is not connected to S0 interface port and ISDN extension is
not connected to T0 interface port.
The mode selection method is shown in table 3.4.3.
SW2 SW1
S/T Port
CN2
1 Port STIB
SW2 SW1
S/T Port
CN2
2 Port STIB
T Port SW3
Figure 3.4.8 Switches and connector for the STIB