Installing The Isdn Trk Card; Connection Of A Second Isdn Card To Double Ccu Dbs Systems - Panasonic Digital Business System Installation Manual

Panasonic Digital Business System - Installation Manual
March 1997 Issue 5
Figure 27c - E-ISDN MDF Mounting

Installing The ISDN TRK Card

The ISDN TRK card must be installed in the universal slot of the DBS when used as a single cabinet system. (DBS
38, 68, 90)
The ISDN TRK card must be installed in the universal slot of the slave when installing it in a double cabinet
system. (DBS 128, 158, 180)
Connect CN5 on the DASS II TRK card to CN1 on the sync unit using the connection cable provided with the sync
unit.

Connection of a second ISDN card to double CCU DBS systems

With a double CCU DBS system, the ISDN cards are fitted to the universal slots of the CCUs. Each card is
attached to it's own MDF unit, suitable for the protocol being used. The card in the Master must be a E-ISDN or
revised DASSII unit with an extension socket for the Sync Unit connection. The slave card must use the same
protocol ( E-ISDN or DASSII ) , but can be an original DASSII card, with no output socket for Sync connection, if
the card in the Master CCU is also DASSII. All E-ISDN cards are fitted with the additional socket.
The Sync Unit is then connected from the CPC-EX ( v1.5 or later ) to the lower connector on the ISDN card using
the short cable supplied with the Sync Unit. The ISDN card in the Master CCU is connected from the middle
socket to the lower socket of the ISDN card in the Slave CCU using the longer cable supplied with the Sync Unit. (
These are shown by the bold lines in the diagram ).
The MDFs are connected via their own cables to the upper socket on the appropriate ISDN card.
The diagram shows the CBL cards and their link cable for completeness as these will already have been installed
to create the double CCU DBS.
43