LG Electronics GDK-20W Isdn STIB2 & Stib S/T Interface Board Installation, SW2 SW1 CN2

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

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.

S/T Port

S/T Port

T Port

SW2 SW1

CN2

1 Port STIB

SW2 SW1

CN2

2 Port STIB

SW3

Figure 3.4.8 Switches and connector for the STIB

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