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  2-39
MFR/8 card (VB-44110): 8 DTMF Receiver Card
The MFR/8 card is a receiving circuit accommodating card for DTMF signals.
The MFR/8 card is mounted in an option slot or flexible slot to receive DTMF 
signals which are sent from a standard telephone (SLT) to an extension line. The 
MFR/8 card also can receive DTMF signals sent from a trunk.
The MFR/8 card provides an on-board 8-circuit DTMF receiver circuit....

Chapter 2. System Overview Section 300-Installation
2-40 DBS 576 (USA), issued 6/2/98 576-13-300
CONF card (VB-44120): Conference Card
The CONF card is a conference speech card.
The CONF card is mounted in a flexible slot to support two eight-party conferences.
Figure 3-28. CONF card
CAUTION:
• Don’t change the switches on the CONF card from the default setting.
SW1, SW2 and SW3 must be set OFF.
Otherwise, the mounting slot position of the CONF card and other cards 
are restricted. 

Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-41
ACD card (VB-44140): ACD card
The ACD card is an Automatic Call Distribution (ACD) card which is mounted in 
the main cabinet.
By using the ACD card with one VPU/4 card (VB-44160), simplified ACD functions 
such as the incoming call distributing function and processed call number 
information for each terminal can be supported. 
MIS reports may be sent output through an RS-232C port to either a printer or PC...

Chapter 2. System Overview Section 300-Installation
2-42 DBS 576 (USA), issued 6/2/98 576-13-300
Table 2-30.  ACD Card Switch Settings
Table 2-31.  ACD Card LED IndicationsSwitch No. Setting Description
SW1 BACK UP Set when retaining RAM data.
INITIAL Set when clearing RAM data.
SW2 ON LINE Normal operation (set to ON LINE during regular operation)
OFF LINE Not used.
LED Display Description
LED1
(CPU RUN)Blinks when the CPU is in operation. 

Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-43
VPU/4 card (VB-44160): 4-voice Processing card
The VPU/4 card can support simplified voice mail functions by using this card with 
the VSSC card (VB-44170). This card can also be used as a voice processing card for 
ACD when combined with the ACD card (VB-44140).
Two types of VPU cards are available; the VPU/8 card and the VPU/4 (VB-44150). 
The VPU/8 provides 8 voice paths to the voice mail system while the...

Chapter 2. System Overview Section 300-Installation
2-44 DBS 576 (USA), issued 6/2/98 576-13-300
VPU/8 card (VB-44150): 8-voice Processing card
The VPU/8 card is a voice processing card for voice mail (two-way), and is mounted 
in the main cabinet. 
Two types of VPU cards are available; the VPU/8 and the VPU/4 (VB-44150). The 
VPU/8 provides 8 voice paths to the voice mail system while the VPU provides 4 
voice paths. Up to two VPUs of any type may be installed in a single cabinet and 
must be combined...

Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-45
VSSC card (VB-44170): Voice Storage Service card
The VSSC card is a voice storage card for built-in voice mail (two-way), and is 
mounted in the main cabinet.
The VSSC card provides a hard disk to store voice data of voice mail. This card must 
be combined with one or two VPU cards (VPU/8 card and/or VPU/4 card).
Only one VSSC card can be mounted in each cabinet.
This card must be installed into FS11. FS 12...

Chapter 2. System Overview Section 300-Installation
2-46 DBS 576 (USA), issued 6/2/98 576-13-300
Table 2-34.  VSSC Card Switch Settings
Table 2-35.  VSSC Card LED IndicationsSwitch No. Setting Description
SW1 BACK UP Set when retaining RAM data.
INITIAL Set when clearing RAM data.
SW2 ON LINE Normal operation (set to ON LINE during regular operation)
OFF LINE Set when replacing the HDD system.
LED Display Description
LED1
(CPU RUN)Blinks when the CPU is in operation.
LED2 Not used.
LED3 Not used. 

Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-47
API card (VB-44131)
The API card is an interface card for applications such as voice mail and ACD.
The external interface is an RS-232C port (maximum 19200 bps).
Only one API card can be mounted for each system. This sheet is mounted to on 
option slot (OP1 or OP2) or on an expansion slot (FS1 to FS12).
Figure 3-33. API card
Tables 2-21 to 2-23 show the switch settings and LED indications.
Table 2-36....

Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-48
Table 2-37.  Internal diagnosis switch (SW2) settings of API card
Table 2-38.  Memory backup switch (SW3) settings of API card
Table 2-39.  LED indications of API cardSetting Description
ON (top) Normal operation (This switch is set to ON for normal operation.)
OFF (bottom) Normal operation (This switch is set to OFF for normal operation.)
Setting Description
ON (top) Self-diagnosis API card
OFF (bottom) Can...