Panasonic Digital Business System 576 Technical Manual Section 300

Section 300-Installation Chapter 5 - Trunks and Extensions
576-13-300 DBS 576 (USA), issued 6/2/98  5-17
E&M Tie Line Trunks
Guidelines
• E&M Tie Line Trunks are connected to a E&M Tie Line card (VB-44560) 
installed in a flexible slot of the cabinet. A maximum of 4 trunks can be 
connected to each E&M Tie Line card.
• A -48V Power Supply must be installed in the same cabinet as the E&M/4 card 
for E&M trunks to operate.
• E&M Tie Lines can be directly wired to the network jack (USOC: RJ1CX).
• Each...

Chapter 5 - Trunks and Extensions Section 300-Installation
5-18 DBS 576 (USA), issued 6/2/98 576-13-300
Figure 5-7. Connecting E&M Tie Line Trunks 

Section 300-Installation Chapter 5 - Trunks and Extensions
576-13-300 DBS 576 (USA), issued 6/2/98  5-19
T-Point ISDN Interface (TBRI)
Guidelines
• T-point ISDN is accommodated by the TBRI/4 card which is installed in the 
flexible slot. Four T-point ISDN lines can be connected to each TBRI/4 card.
• T-point ISDN is connected via NT1 (Network Termination Unit (NT1)).
• T-point ISDN is connected to the TBRI/4 card using 8-conductor modular 
connectors. See Figure 5-9 for the pin configuration of the...

Chapter 5 - Trunks and Extensions Section 300-Installation
5-20 DBS 576 (USA), issued 6/2/98 576-13-300
Table 5-12.  Line Selection Switch (SW1: SELECT) on TBRI/4 Card
Installation
1.  Align the CN8 connector of the CPC96 card or the CN5 connector of the 
TSW288 or TSW576 card with the holes of spacers and connect the 
synchronization package (VB-44460).
Figure 5-8. Installation of Sync Package (Example: Installation on TSW288 Card)
2.  Insert the CPC96, TSW288, or TSW576 card in the specified slot.
3....

Section 300-Installation Chapter 5 - Trunks and Extensions
576-13-300 DBS 576 (USA), issued 6/2/98  5-21
5.  Pass the T-point ISDN wires with 8-conductor modular jack through the wiring 
aperture in the main unit and connect it to the modular connector on the TBRI/4 
card.
Figure 5-9. Connection of T-Point ISDN Interface (BRI) 

Chapter 5 - Trunks and Extensions Section 300-Installation
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T-Point ISDN Primary Rate Interface (PRI)
Guidelines
• The T-point ISDN primary rate interface carrier line is accommodated on the PRI/
23 card which is installed in the flexible slot. You can connect one T-point ISDN 
primary rate interface carrier to each PRI/23 card.
• By setting the switch and reprogramming, the PRI/23 card can also be set up as an 
S-point ISDN primary rate interface (see page...

Section 300-Installation Chapter 5 - Trunks and Extensions
576-13-300 DBS 576 (USA), issued 6/2/98  5-23
Table 5-14.  Maximum Number of T-Point ISDN Primary Rate Interface Cards Per System
Installation
1.  Align the CN8 connector of the CPC96 card or the CN5 connector of the 
TSW288 or TSW576 card with the holes of spacers and connect the SYNC 
synchronization package. See Figure 5-8 on page 5-20 for how to install the 
SYNC synchronization package.
2.  Insert the CPC96, TSW288, or TSW576 card in the...

Chapter 5 - Trunks and Extensions Section 300-Installation
5-24 DBS 576 (USA), issued 6/2/98 576-13-300
Table 5-16.  Switch Setting for SW1 on PRI/23 Card
6.  Insert the PRI/23 card into the specified flexible slot (see page 4-36)
7.  Connect the 8-conductor modular jack via the CSU to the T-point ISDN primary 
rate carrier line.
8.  Pass the T-point ISDN rate carrier wires with 8-conductor modular jack through 
the wiring aperture of the cabinet and connect it to the modular connector on the 
PRI/23...

Section 300-Installation Chapter 5 - Trunks and Extensions
576-13-300 DBS 576 (USA), issued 6/2/98  5-25
T1 Interface
Guidelines
• A T1 line is connected to the T1 card which is installed in the flexible slot. You 
can connect one T1 line to each T1 card.
• The T1 line connects to the switched network via a CSU (Channel Service Unit).
• Depending on Dip switch SW2-2, the T1 card can be set for 8-channel mode or 
Other mode. When set for Other mode you can also specify two channel 
classifications: 1 to...

Chapter 5 - Trunks and Extensions Section 300-Installation
5-26 DBS 576 (USA), issued 6/2/98 576-13-300
Installation
1.  Align the CN8 connector of the CPC96 card or the CN5 connector of the 
TSW288 or TSW576 card with the holes of spacers and connect the SYNC 
synchronization package. See Figure 5-8 on page 5-20 for how to install the 
SYNC synchronization package.
2.  Insert the CPC96, TSW288, or TSW576 card in the specified slot.
3.  Set the DIP switch (SW2-1) of the T1 card ON (trunk).
4.  Set the...