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GDK-100
DIGITAL KEY TELEPHONE SYSTEM
126
GDK-100 PRIB is typically used as TE connecting with ISDN PX and DSU. But the PRIB can be used as
NT in special purpose such as QSIG function with another GDK PRIBs directly. However the type of contact
assignments of RJ45 type jack is provided for TE connection on GDK-100 PRIB, that is, the contact
assignments of RJ45 type jack on PRIB are not changed even though the board is set to NT mode. See
Table 3.5.7.b and Figure 3.5.7.3. So it is important that the wiring with contact assignments of RJ45 type
connector should be checked, when PRIB is set to master mode (NT) during installation. The TX pair of
RJ45 connector on PRIB in master mode is connected to the RX pair of PRIB of another system and vice
versa as following figure 3.5.7.3.c.
Note:
1. When PRIB is set to NT mode, two pins of CON3 should be shorted by shorting traps, e.g. a
short pin. See the clause 3.4.6.3 PRIB Installation; Function of Connectors.
Figure 3.5.7.3.c
PRI line (NT connection) wiring with GDK system PRIBs
Another GDK system
PRIB/PRIU (TE mode)
GDK-100 PRIB (NT mode)
RJ45 connector
RX
RX-
TX
TX
1
2
4
5
1
2
4
5
RX
RX
TX
TX
Содержание GDK-100
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