Analog CO/PABX Line Interface Boards (LCOB:
The LCOB2, LCOB, LCOBE, LCOBA, and LCOB4 can be installed on the SLOT2 & SLOT3
The exterior of them are shown in Figure 3.4.7.
This board provides two(2) Loop Start ports and four(4) Loop Start ports.
Board | Slot | Port No. |
|
|
|
LCOB2, LCOB4 | SLOT2 & 3 | 4 |
|
|
|
LCOB, LCOBE, LCOBA | SLOT2 & 3 | 2 |
|
|
|
[Table 3.4.2] LCOBs
Figure 3.4.7 Analog CO Interface Boards
ISDN STIB2 & STIB (S/T Interface Board) Installation
It should be noted that the STIB2 & STIB board should be installed on the SLOT2&SLOT3 of the MBU.
The STIB2 provides 1 port of BRI(Basic Rate
Select the jumpers and DIP switches for S0 or T0 interface. Be sure to connect ISDN trunk to T0 interface port and ISDN extension to S0 interface port. Check if ISDN trunk is not connected to S0 interface port and ISDN extension is not connected to T0 interface port.
The mode selection method is shown in table 3.4.3.
S/T Port
S/T Port
T Port
SW2 |
| SW1 |
CN2
1 Port STIB
SW2 |
| SW1 |
CN2
2 Port STIB
SW3
Figure 3.4.8 Switches and connector for the STIB
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