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...

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...

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...

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
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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...

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
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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...

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...

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...