Panasonic Digital Business System 576 Technical Manual Section 300

							Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-19
SCC card (VB-44181): Service Control Card
The SCC card is used to extend service functions. This card is mounted in the option 
slot to support RS-232C port control, background music (BGM) input and external 
paging (external paging with talkback) control.
Only one SCC card can be mounted for each system.
The major specifications of this card follow:
• RS-232C port: 2 ports (max. 9600 bps)
CN5: SMDR or customized tool
CN6: Bus monitor
• BGM input terminal: 1 port (with RCA jack)
• External paging input terminal
• External amplifier ON/OFF control: 1 contact
• Number of contacts for external equipment ON/OFF control: 5 contacts
• Maximum drive current controlling ports for external equipment control board: 
25mA (Total)
Figure 2-15. SCC card 
						

							Chapter 2. System Overview Section 300-Installation
2-20 DBS 576 (USA), issued 6/2/98 576-13-300
Table 2-11shows the switch settings.
Table 2-11.  SCC card switch settings.
Switch No. Setting Description
SW1 CTM Connects customized tool to RS-232C port (CN5).
SMDR Connects SMDR to RS-232C port (CN5) (default)
SW2 ON Sets input impedance of external paging device to 600
 Ohms.
OFF Sets input impedance of external paging device to high impedance. (This is 
set before shipping.) 
						

							Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-21
LTRK / 8 card (VB-44510): Loop Start Trunk Card
The LTRK/8 card is an interface that accommodates loop start type analog trunks. 
This card is mounted on a flexible slot to connect analog telephone lines. An optional 
“piggyback” daughter circuit card (VB-44513) may be installed on this card to 
receive Caller ID. See “CID card (VB-44513): Caller ID Interface Card” on page 2-
23 for more information.
The LTRK/8 card provides 8 circuit trunk interface, detection and answering of call 
signals from the trunk, sending signals to the trunk, dialing and speech.
The LTRK/8 card provides a lightening arrester and a safety circuit to directly 
connect with general telephone lines.
Figure 2-16. LTRK/8 card 
						

							Chapter 2. System Overview Section 300-Installation
2-22 DBS 576 (USA), issued 6/2/98 576-13-300
Table 2-12 and Table 2-14 show the switch settings and LED indications.
Table 2-12.  Maintenance switch (SW1) settings of LTRK/8 card
Table 2-13.  Caller ID switch (SW10-17) settings of LTRK/8 card
Table 2-14.  LED indications of LTRK/8 cardSetting Description
ON Card is in closed status, and can be mounted and removed when power is ON. (Send-
ing/receiving of calls is disabled. If this is set while a trunk is in use, sending/receiv-
ing of calls is disabled after the call ends.)
OFF (M-SW) Normal operation (This switch is set to OFF for normal operation.)
Switch Setting Description
SW10 ON Circuit 1 is in loop start mode and does not receive caller ID information.
OFF Circuit 1 is set to receive Caller ID information (requires CID card).
SW11 ON Circuit 2 is in loop start mode and does not receive caller ID information.
OFF Circuit 2 is set to receive Caller ID information (requires CID card).
SW12 ON Circuit 3 is in loop start mode and does not receive caller ID information.
OFF Circuit 3 is set to receive Caller ID information (requires CID card).
SW13 ON Circuit 4 is in loop start mode and does not receive caller ID information.
OFF Circuit 4 is set to receive Caller ID information (requires CID card).
SW14 ON Circuit 5 is in loop start mode and does not receive caller ID information.
OFF Circuit 5 is set to receive Caller ID information (requires CID card).
SW15 ON Circuit 6 is in loop start mode and does not receive caller ID information.
OFF Circuit 6 is set to receive Caller ID information (requires CID card).
SW16 ON Circuit 7 is in loop start mode and does not receive caller ID information.
OFF Circuit 7 is set to receive Caller ID information (requires CID card).
SW17 ON Circuit 8 is in loop start mode and does not receive caller ID information.
OFF Circuit 8 is set to receive Caller ID information (requires CID card).
LED indication Description
LED1 (LINE BUSY) Turns ON when any trunk on the card is in use.  
						

							Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-23
CID card (VB-44513): Caller ID Interface Card
The Caller ID card is an interface that attaches to the loop start card (VB-44510) and 
receives Caller ID information. 
The CID card provides 8 circuits. DIP switches on the Loop Start Card must be 
properly set for CID to operate. (See “LTRK / 8 card (VB-44510): Loop Start Trunk 
Card” on page 2-21 for more information.
Figure 2-17. CID card 
						

							Chapter 2. System Overview Section 300-Installation
2-24 DBS 576 (USA), issued 6/2/98 576-13-300
LGTRK / 8 card (VB-44511): Loop Start/Ground Start Trunk 
Card
The LGTRK/8 card is an interface that accommodates both loop start type analog 
trunks and ground start analog trunks. Each trunk circuit type (either ground start or 
loop start) is specified by a program setting as well as by two jumpers settings. 
This card is mounted on a flexible slot to connect general analog telephone lines.
The LGTRK/8 card provides an 8 circuit trunk interface and can serve the functions 
of detection and answering of call signals from the trunk, sending call signals to the 
trunk, dialing and speech.
The LGTRK/8 card provides a lightening arrester and a safety circuit to directly 
connect with general telephone lines. 
Note:
To use the LGTRK/8 card, a built-in -48V power supply is required in 
the same cabinet. The -48V power supply signal ground (SG) connector must 
be properly connected to ground for the ground start trunks to operate 
correctly.
Each circuit has two jumper connectors (CNX01 and CNX02). When jumpers are 
installed on both jumper connectors, the circuit is set for Ground Start operation. 
When the jumpers are not installed, the circuit is set of Loop start operation. 
Table 2-15.  Ground Start/Loop Start jumper settings of LGTRK/8 card 
Jumper 
ConnectorJumper Description
CN101 & CN102 ON Circuit 1 is in ground start mode
OFF Circuit 1 is in loop start mode
CN201 & CN202 ON Circuit 2 is in ground start mode
OFF Circuit 2 is in loop start mode
CN301 & CN302 ON Circuit 3 is in ground start mode
OFF Circuit 3 is in loop start mode
CN401 & CN402 ON Circuit 4 is in ground start mode
OFF Circuit 4 is in loop start mode
CN501 & CN502 ON Circuit 5 is in ground start mode
OFF Circuit 5 is in loop start mode
CN601 & CN602 ON Circuit 6 is in ground start mode
OFF Circuit 6 is in loop start mode
CN701 & CN702 ON Circuit 7 is in ground start mode
OFF Circuit 7 is in loop start mode
CN801 & CN802 ON Circuit 8 is in ground start mode
OFF Circuit 8 is in loop start mode 
						

							Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-25
The switch settings and LED indications are the same as for the LTRK/8 card (VB-
44510). See Table 2-12 and Table 2-14.
Figure 2-18. LGTRK/8 card 
						

							Chapter 2. System Overview Section 300-Installation
2-26 DBS 576 (USA), issued 6/2/98 576-13-300
DID/8 card (VB-44520): DID Trunk Card
The DID/8 card is a trunk interface that accommodates cards for the DID dedicated 
incoming function.
The incoming call address receiving control system supports the immediate and wink 
method, and supports DP (10 PPS) and DTMF (only for wink) as incoming call 
address signals. However, an MFR is required when the DTMF is selected. MFR is 
supplied in CPC96, CPC288 and CPC576 card. Additional MFRs are available in an 
MFR/8 card.
The DID/8 card is mounted on a flexible slot to connect to a DID telephone line, 
making detection and answering of call signals from the trunk and speech possible.
The DID/8 card provides an 8-circuit trunk interface on the card, and a lightening 
arrester to directly connect to a DID telephone line. 
Note:
To use the DID/8 card, a built-in -48V power supply is required in the 
same cabinet.
The switch settings and LED indications are the same as for the LTRK/8 card (VB-
44510). See Table 2-12 and Table 2-14.
Figure 2-19. DIDTR 8 card 
						

							Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-27
E&M/4 card (VB-44560): E&M Trunk Card
The E&M/4 card is a trunk interface that accommodates cards for the E&M Tie line 
connections. Typically, tie trunks are used in network connections and for direct 
connections to other PBX systems.
The incoming call address receiving control system supports the immediate and wink 
method, and supports DP (10 PPS) and DTMF (only for wink) as incoming call 
address signals. However, an MFR is required when the DTMF is selected. MFR is 
supplied in CPC96, CPC288 and CPC576 card. Additional MFRs are available in an 
MFR/8 card.
The E&M/4 card is mounted on a flexible slot to connect to a E&M telephone line.
The E&M/4 card provides a 4-circuit trunk interface on the card, and a lightening 
arrester to directly connect to a E&M telephone line. 
Note:
To use the E&M/4 card, a built-in -48V power supply is required in the 
same cabinet.
Figure 2-20. E&M/4 card 
						

							Chapter 2. System Overview Section 300-Installation
2-28 DBS 576 (USA), issued 6/2/98 576-13-300
TBRI/4 card (VB-44530): BRI Card (T-point)
The TBRI/4 card is a T-point ISDN basic interface (2 B + D: 192 kbps) 
accommodation card.
The TBRI/4 card is mounted on a flexible slot to control the basic user network 
interface of ISDN.
The TBRI/4 card is connected through a Network Termination Unit (NT1) to the 
ISDN trunk which supports the T-point ISDN basic interface. (The NT1 is not 
provided.)
This card has an on-board, 4-circuit T-point ISDN basic interface, and a lightening 
arrester built-in, and also provides a network clock synchronizing function.
Figure 2-21. TBRI/4 card
Tables 2-11, 2-12 and 2-13 show the switch settings and LED indications.