MGC Hardware and Installation Manual
Net-2/Net-4/Net-8/Net-8L ISDN and Net-2/Net-4/Net-8 T1-CAS Network Interface Module
The Net-2/Net-4/Net-8/Net-8L ISDN Network Interface module provides the interface between the MGC unit and the ISDN network. The Net-2/Net-4/ Net-8 T1-CAS Network Interface module provides the interface between the MGC unit and T1-CAS lines.
The same type of card can be used to connect ISDN lines or T1-CAS lines. However, you cannot connect ISDN lines and T1-CAS lines to the same network card.
The Net-2/Net-4/Net-8 card connects to the IO-2, IO-4, and IO-8 cards respectively. The IO-8 card contains connections of up to eight PRI spans, of either an E1 or T1 line and it can work with both types simultaneously. When the Net-2/Net-4/Net-8 card is used for T1-CAS lines, only T1 spans are connected to the IO card.
Different types of ISDN and T1-CAS Network Interface Modules can be installed. For more details, see “MGC Functional Modules Description” on page 4-23.
The module’s front panel includes two, four or eight tri-color LEDs (depending on the card’s configuration). Depending on the states of the LEDs inputs, the LED can be off, green, red or yellow. The red and yellow states indicate alarms.
NET-2 | NET-4 | NET-8 |
Stby | Stby | Stby |
Fail | Fail | Fail |
Active | Active | Active |
| | Line 1 |
| | Line 2 |
| | Line 3 |
| | Line 4 |
| Line 1 | Line 5 |
| Line 2 | Line 6 |
Line 1 | Line 3 | Line 7 |
Line 2 | Line 4 | Line 8 |
