Panasonic Digital Business System - Installation Manual
March 1997
Issue 5
11
Slot
Card
Description
Number Of Slots In CCU
By System Size
Card Model
38
68
90
128
158
180
CPU
Central Processor
1
1
1
1
1
1
VB3775
SCC
System Control
1
1
1
1
1
1
VB3665A
LINE
Line Card
E&M Card
(Note 3)
1
2
3
4
5
6
VB3660
VB3663
EXT
Digital Extension Card
Analogue Ext. Card
3
6
8
11
14
16
VB3670
VB3680
EXT /
LINE
Line Card
Extension Card
E&M Card
(Note 3)
ISDN Card
(Note 4)
1
1
1
2
2
2
VB3660
VB3670 / VB3680
VB3663
VB3664
AUX
DTMF Receiver
Link Cable
2
2
2
2
2
2
VB3682
VB3691
Table 4 - Relation Between Slots And Modular Cards
Note 1: Never remove the cover of a modular card.
Note 2: To ease installation of multiple cards install then working from the left of the CCU to the right. LINE -DEC-
AEC-SCC-CPC-MFR- Link card.
Note 3: A maximum of 2 E&M cards can be fitted to any CCU. The DBS 38 CCU can take 1, the DBS 68 and 90
CCUs can take 2. Refer to the E&M card installation instructions for full details.
Note 4: A maximum of 1 ISDN card can be fitted to any system regardless of size. It must occupy a universal slot.
See ISDN card installation instructions for full details.
Important
The first extension card fitted to a system in slot EXT1
MUST be a digital extension card