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  5-27
Table 5-20.  Switch Setting for SW1 on T1 Card
6.  Insert the T1 card into the specified flexible slot (see page 4-36).
7.  Connect the 8-conductor modular jack via the CSU to the T1 carrier line.
8.  Pass the cable with 8-conductor modular jack through the wiring aperture of the 
cabinet and connect it to the modular connector on the T1 card.
Figure 5-11. Connection of T1 Rate Interface
Switch No. Distance from the DBS 576 to the CSU
0 to 150 ft. 150 to 450 ft. 450 to 655 ft.
SW1-1 ON OFF OFF
SW1-2 OFF ON OFF
SW1-3 OFF OFF ON
SW1-4 OFF ON OFF
SW1-5 OFF OFF ON
SW1-6 OFF ON OFF
SW1-7 OFF OFF ON
SW1-8 Not used 
						

							Chapter 5 - Trunks and Extensions Section 300-Installation
5-28 DBS 576 (USA), issued 6/2/98 576-13-300
Extensions
The following cards are used with extensions:
• DEC/8: Digital key phone interface card (8 ports)
• AEC/8: Standard telephone (SLT) extension interface card (8 ports)
• SBRI/4: S-point ISDN basic interface card (4 ports)
• PRI/23: T-point and S-point ISDN primary rate interface card (1 port)
In addition to the extension cards, if installing using any combination of DEC/8 and 
AEC/8 cards, an appropriate number of Extension MDF Cards must be installed for 
each cabinet as described in “Extension MDF Interface Card” on page 5-29.
Install the correct type of cards in the cabinet for the extensions that are to be 
connected, then connect the extensions.
The following describes how to connect the respective types of extensions. 
						

							Section 300-Installation Chapter 5 - Trunks and Extensions
576-13-300 DBS 576 (USA), issued 6/2/98  5-29
Extension MDF Interface Card
Guidelines
• Digital Extension Card (DEC/8) Lines, and Analog Extension Card (AEC/8) 
Lines connect to the Main Distribution Frame through the Extension MDF 
Interface (MDF-EXT) card. Each Extension MDF Interface supports any 
combination of up to three of these extension cards.
• Each extension circuit card contains one sixteen-wire connector. Each sixteen-
wire connector provides connection to all 8 extension circuits.
• The Extension MDF Interface may be mounted on either side of the cabinet. If the 
system may expand to include cabinets installed side by side, install the MDF 
Interface on the side of the cabinet that will remain on the outside.
• The Extension MDF Interface contains three sixteen-wire connectors. Each 
connector supports one extension card.
• A second type of MDF Interface is used with the DBS 576. The Trunk MDF 
Interface is also installed in the MDF Interface positions on the side of the 
cabinet. Make certain that you use the correct MDF Interface.
Installation
1.  From Table 5-21 determine the total number of Extension Interface Cards 
required per cabinet. 
Table 5-21.  Number of Extension Interface Cards Required per Cabinet
2.  From Figure 5-12, determine the Extension MDF Interface Card position(s).Total Number of Extension
Cards in Cabinet
(DEC/8 and AEC/8)Required Number of 
Extension MDF Interface 
Cards
1 to 3 1
4 to 6 2
7 to 9 3
10 to 12 4
MDF-EXT card 
						

							Chapter 5 - Trunks and Extensions Section 300-Installation
5-30 DBS 576 (USA), issued 6/2/98 576-13-300
Figure 5-12. Extension MDF Interface Installation
3.  Holding the Extension MDF Interface Card in place, insert the bottom tab of the 
Extension MDF Interface Card into the slot opening at the bottom of the MDF 
Interface Card position.
4.  Use the supplied screw to fasten the Extension MDF Interface Card into place.
5.  Repeat steps 3 and 4 for any additional Extension MDF Interface Cards to be 
installed. 
						

							Section 300-Installation Chapter 5 - Trunks and Extensions
576-13-300 DBS 576 (USA), issued 6/2/98  5-31
Digital Extensions
Guidelines
• Digital extensions are connected to a DEC/8 card installed in a flexible slot of the 
cabinet. A maximum of 8 extensions can be connected to each DEC/8 card.
• One or more Extension MDF Interface Cards (VB-44611) must be installed to 
support connection of extension lines from the Main Distribution Frame (MDF) 
to the DEC/8 card. Each Extension MDF Interface supports up to three DEC/8 or 
AEC/8 cards (up to 24 extension). See “Extension MDF Interface Card” on page 
5-29 for information on installing the Extension MDF Interface Card.
• Connect digital extensions to digital key phones via normal building wiring.
• See Table 7-9 on page 7-7 for the maximum loop circuit resistance and distance.
• DEC/8 cards can be removed and replaced while the system is operating. 
However, because there are no busy lamps for calls on extensions, you cannot 
check the status of these lines. We recommend using paging, etc., before 
removing the cards, to warn users that the lines will be disconnected (see page 5-
1 for details).
• Table 5-22 shows the maximum numbers of cards and extensions per system type.
Table 5-22.  Maximum cards and digital (and analog) extensions per system
Installation
Note:Prior to installing the Extension Card, make certain you can connect to an 
Extension MDF Interface Card (VB44611) mounted on the side of the cabinet. See 
“Extension MDF Interface Card” on page 5-29 for more information on installing an 
Extension MDF Interface Card.
1.  Install the DEC/8 card in any available flexible slot.
2.  Referring to Figure 5-13 and Table 5-23 on page 5-33, connect the extension 
card to the MDF Interface Card using supplied sixteen-lead cable. System Type Maximum 
number of cardsMaximum 
extension Nos.
96 ports (CAB96
51) 12 1-96
192  ports (CAB96 + CAB96B) 24 1-192
288  ports (CAB96 + CAB96B
x2) 36 1-288
384  ports (CAB96
x2 + CAB96Bx2) 48 1-384
480  ports (CAB96
x2 + CAB96Bx3) 60 1-480
576  ports (CAB96
x2 + CAB96Bx4) 72 1-576
DEC/8 card 
						

							Chapter 5 - Trunks and Extensions Section 300-Installation
5-32 DBS 576 (USA), issued 6/2/98 576-13-300
Note: Labels are supplied with the MDF Interface Card to identify the Flexible 
Slot cable connection. Make certain to attach a label on both ends of the cable 
and at the MDF Interface Card connector.
Figure 5-13. Connecting Digital Extension Lines 
						

							Section 300-Installation Chapter 5 - Trunks and Extensions
576-13-300 DBS 576 (USA), issued 6/2/98  5-33
Table 5-23.  Digital Extension Connections and Pinouts.
Extension Circuit Card(s) MDF Interface (Extension)
B (Cabinet) SS (Slot) C (Circuit) Connector Modular 
ConnectorCN1 Color 
CodeCN1 Pin No.
_________
__________
1
CN2 CN2 (Bottom)WH-BL
BL-WH26
1
2 WH-OR
OR-WH27
2
3 WH-GN
GN-WH28
3
4 WH-BR
BR-WH29
4
5WH-SL
SL-WH30
5
6 RD-BL
BL-RD31
6
7 RD-OR
OR-RD32
7
8 RD-GN
GN-RD33
8
__________
1
CN2 CN3 (Middle)RD-BR
BR-RD34
9
2RD-SL
SL-RD35
10
3 BK-BL
BL-BK36
11
4 BK-OR
OR-BK37
12
5 BK-GN
GN-BK38
13
6 BK-BR
BR-BK39
14
7BK-SL
SL-BK40
15
8 YL-BL
BL-YL41
16
__________
1
CN2 (Bottom) CN4 (Top)YL-OR
OR-YL42
17
2YL-GN
GN-YL43
18
3 YL-BR
BR-YL44
19
4YL-SL
SL-YL45
20
5 VI-BL
BL-VI46
21
6VI-OR
OR-VI47
22
7VI-GN
GN-VI48
23
8 VI-BR
BR-VI49
24
No Connection No ConnectionVI-SL
SL-VI50
25 
						

							Chapter 5 - Trunks and Extensions Section 300-Installation
5-34 DBS 576 (USA), issued 6/2/98 576-13-300
DBS 96 Digital Extensions
Guidelines
• Digital extensions are connected to a DEC card installed in an extension slot of 
the DBS 96 cabinet. A maximum of 8 extensions can be connected to each DBS 
DEC card.
• The CBLDBS kit (VB-44452) must be installed to connect the DBS 576 to the 
DBS. One CBLDBS MDF Interface (part of the CBLDBS kit) must be installed 
to support connection of extension lines from the Main Distribution Frame 
(MDF) to the DBS cabinet. See “Connecting DBS 576 and DBS 96 Systems” on 
page 4-28 for information.
• Connect digital extensions to digital key phones via normal building wiring.
• See Table 7-9 on page 7-7 for the maximum loop circuit resistance and distance.
• The DBS 96 cabinet will only accept DBS DEC cards. No other DBS line or trunk 
card may be used with a DBS 576. 
• The DBS 576 DEC/8 card cannot be installed in the DBS 96 cabinet.
• Up to two DBS cabinets may be connected to the DBS 576.
• Up to 9 DBS DEC cards can be installed in the DBS 96 cabinet therefore 
supporting up to 72 ports. However, the DBS 96 cabinet logically occupies 96 
port addresses; 24 ports are not available. For each DBS 96 cabinet installed, the 
maximum number of ports in the overall system is reduced by 24 ports. If two 
DBS 96 cabinets are installed, the maximum number of overall ports is reduced 
by 48 ports. 
• The programming address to the DBS Card slot positions are as follows:
Table 5-24.   Relationship of Programming Address to DBS Card Postion
DBS 576 Programming 
Address Card Slot (SS)DBS DEC Card Position CBLDBS MDF 
Connector
Slot 1 Not Available Not Applicable
Slot 2 EC1
EXT A Slot 3 EC2
Slot 4 EC3
Slot 5 Not Available Not Applicable
Slot 6 EC4
EXT B Slot 7 EC5
Slot 8 EC6
Slot 9 Not Available Not Applicable
Slot 10 EC7
EXT C Slot 11 EC8
Slot 12 EC/TK
DBS DEC card 
						

							Section 300-Installation Chapter 5 - Trunks and Extensions
576-13-300 DBS 576 (USA), issued 6/2/98  5-35
Installation
1.  Install the DBS DEC card in any available DBS 96 cabinet EC slot or the EC/
TRK slot.
2.  Referring to Figure 5-14 and Table 5-25, Table 5-26, and Table 5-27, connect the 
CBLDBS MDF Interface Card to the MDF using standard 25-pair cabling (not 
supplied). Each cable must have a male connector at the CBLDBS MDF 
interface end.
Figure 5-14. Connecting DBS 96 Digital Extension Lines 
						

							Chapter 5 - Trunks and Extensions Section 300-Installation
5-36 DBS 576 (USA), issued 6/2/98 576-13-300
Table 5-25.  DBS 96 Digital Extension Connections and Pinouts - Slots EC1, EC2, and EC3.
DBS 96 Cabinet Extension Circuit Card(s) CBLDBS MDF Interface
B (Cabinet) Slot C (Circuit) Connector Color Code Pin No.
_________
DBS 96 
Cabinet Slot
EC1
(DBS 576 
Programming 
Slot 02)1
EXT AWH-BL
BL-WH26
1
2 WH-OR
OR-WH27
2
3 WH-GN
GN-WH28
3
4 WH-BR
BR-WH29
4
5WH-SL
SL-WH30
5
6 RD-BL
BL-RD31
6
7 RD-OR
OR-RD32
7
8 RD-GN
GN-RD33
8
DBS 96 
Cabinet Slot
EC2
(DBS 576 
Programming 
Slot 03)1 RD-BR
BR-RD34
9
2RD-SL
SL-RD35
10
3 BK-BL
BL-BK36
11
4 BK-OR
OR-BK37
12
5 BK-GN
GN-BK38
13
6 BK-BR
BR-BK39
14
7BK-SL
SL-BK40
15
8 YL-BL
BL-YL41
16
DBS 96 
Cabinet Slot
EC3
(DBS 576 
Programming 
Slot 04)1YL-OR
OR-YL42
17
2YL-GN
GN-YL43
18
3 YL-BR
BR-YL44
19
4YL-SL
SL-YL45
20
5 VI-BL
BL-VI46
21
6 VI-OR
OR-VI47
22
7 VI-GN
GN-VI48
23
8 VI-BR
BR-VI49
24
No Connection No ConnectionVI-SL
SL-VI50
25