LG GDK-20W - Manual (Page 29)

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM
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WTIB (Wireless Terminal Interface Board) Installation
The WTIB provides 2 ports of base station interfaces. The connection between the WTIB and base stations(GDC-200B)
are performed through TERMINAL BLOCK(CN1) by using twisted one pair copper line.
The exterior of the board is shown in Figure 3.4.10.
It should be noted that the WTIB board could be installed on the SLOT5.
Figure 3.4.10 WTIB
DVIB (Digitized Voice Interface Board) Installation
The DVIB provides 2 voice channels. The maximum record time of a DVIB without DVEU(Digitized Voice Expansion Unit)
is 68 minutes and if a DVEU is installed, additional 70 minutes is added to the maximum record time. And the protection
of recorded messages is controlled by MBU SW1-1.
MBU Description System message User message
OFF : for system default Not deleted Deleted
SW1-1
ON : for database protection Not deleted Not deleted
[Table 3.4.4] Protection of recorded messages
The DVIB board should be installed on the SLOT1 of MBU. And the DVEU board should be installed correctly
on the CN4 and CN5 of DVIB. If the boards are incorrectly installed, DVIB or DVEU may be operated abnormally
or damaged.
The connectors of a DVIB board is shown in figure 3.4.11. CN2 is used for the trace of a DVIB board using a trace data
monitor tool(GDK-TRC1). CN4 and CN5 are used for a DVEU installation. CN1 is inserted on SLOT1 of MBU and CN3 is
used for a test.