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  2-29
Table 2-16.  Maintenance switch (SW4) settings of TBRI/4 card
Table 2-17.  Circuit select switch (SW1) settings of TBRI/4 card
Table 2-18.  LED indication of TBRI/4 cardSetting Description
ON Card is in closed status, and can be mounted and removed when the power is ON. 
(Sending/receiving of calls is disabled. If this is set during speech, sending/receiving 
of calls is disabled after speech ends.)
OFF...

Chapter 2. System Overview Section 300-Installation
2-30 DBS 576 (USA), issued 6/2/98 576-13-300
PRI/23 card (VB-44540): PRI Card
The PRI/23 card is a T-point ISDN primary group interface (23B + D/24B: 1544 
kbps) and also an S-point ISDN primary group interface accommodation card.
The PRI/23 card is mounted on a flexible slot to connect the system to ISDN (to 
access ISDN services). It is possible to use either the T- or S-point ISDN primary 
group interface by setting a switch on the card or by a...

Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-31
Figure 2-22. PRI/23 card
Tables 2-14 to 2-17 show the switch settings and LED indications.
Table 2-19.  Maintenance switch (SW4) settings of PRI/23 card
Table 2-20.  Dip switch (SW1) settings of PRI/23 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 during speech, sending/receiving of 
calls is...

Chapter 2. System Overview Section 300-Installation
2-32 DBS 576 (USA), issued 6/2/98 576-13-300
Table 2-21.  Dip switch (SW2) settings of PRI/23 card
Table 2-22.  LED indications of PRI/23 cardSwitch No. Description
SW2-1 ON Sets to trunk for T-point.
OFF Sets to extension line for S-point.
SW2-2 ON Sets to other mode where 1 to 16B+D or 1 to 23B+D channels set by pro-
gram can be used.
OFF Sets to 8ch mode where 1 to 8B+D channels can be used.
LED indication Description
LED1
(LINE BUSY)Turns ON red...

Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-33
T1 Interface card (VB-44550)
The T1 Interface card is mounted in a flexible slot to connect the system to T1 
services. By selecting the mode switch on the card, 8/16/24 channel modes can be 
selected, however, there are restrictions to the position of the slot to which the card is 
mounted. This depends on the number of accommodating channels. For details on 
the restrictions of the slot position, see page...

Chapter 2. System Overview Section 300-Installation
2-34 DBS 576 (USA), issued 6/2/98 576-13-300
Table 2-23.  Maintenance switch (SW3) settings of T1 card
Table 2-24.  Dip switch (SW1) settings of T1 card
Table 2-25.  Dip switch (SW2) settings of T1 card
Table 2-26.  LED indications of T1 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 during speech, sending/receiving of 
calls is disabled...

Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-35
DEC/8 card (VB-44610): Digital Extension Card
The DEC/8 card is an interface accommodating card for digital key telephones 
(1B+D: 64 kbps + 16 kbps).
The DEC/8 card is mounted in a flexible slot to connect digital extension line 
terminals (1B+D: digital multi-function telephones and DSS). This card 
accommodates an on-board 8-circuit extension port interface. The connection format 
is 2-wire non-polarized...

Chapter 2. System Overview Section 300-Installation
2-36 DBS 576 (USA), issued 6/2/98 576-13-300
AEC/8 card (VB-44620): Analog Extension Card
The AEC/8 card is an extension line interface accommodating unit for standard 
telephones (SLT). The AEC/8 card is mounted on a flexible slot to connect a 
standard telephone (SLT) to the system.
The AEC/8 card has an 8-circuit analog extension line interface, and provides such 
functions as call signals from a standard SLT, detection of dialing (10 pps/DTMF) 
and...

Section 300-Installation Chapter 2. System Overview
576-13-300 DBS 576 (USA), issued 6/2/98  2-37
SBRI/4 card (VB-44630): BRI Card (S-point)
The SBRI/4 card is a basic interface (2B+D: 192Kbps) accommodating card for S-
point IDSN.
The SBRI/4 card is mounted on a flexible slot to accommodate terminal extension 
lines of the basic user network interface of an ISDN terminal.
The system supplies +40V to the ISDN terminal which is mounted for extension 
lines.
The SBRI/4 card has an on-board 4-circuit...

Chapter 2. System Overview Section 300-Installation
2-38 DBS 576 (USA), issued 6/2/98 576-13-300
Table 2-27 and Table 2-28 show the switch settings and LED indications.
Table 2-27.  Settings of circuit selection switch of SBRI/4 card
Table 2-28.  LED indications of SBRI/4 cardSwitch Position LED Indication
0 OFF (default setting when unit is shipped)
1 1st interface condition displayed by LAYER1 LED and LAYER2 LED
2 2nd interface condition displayed by LAYER1 LED and LAYER2 LED
3 3rd interface condition...