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2-port ADSL (over POTS) FIC (3C13872) 75
Figure 17 1-port OC-3 ATM SM panel
The following figure illustrates the 1-port OC-3 ATM SML panel
Figure 18 1-port OC-3 ATM SML
The following table describes the LEDs on the card panels.
Table 18 LED description of the ATM cards
LINK | OFF means the link is not connected and ON means the link is connected. |
| |
ACT | OFF means no data is being transceived on the interface and blinking means data |
is being transceived. |
| |
Interface Optical Fiber 1-port OC-3 ATM MM uses multi-mode optical fibers and 1-port OC-3 ATM SM, 1-port OC-3 ATM SML use single-mode optical fibers. As all these three interface cards adopt SC optical fiber connectors, the connectors of the optical fibers must also be SC connectors. The external optical cable suite provides the users with optical cables of variable lengths. For the connector appearance, optical cable connection and the safety precautions, refer to the section 8.5.5 Connect Interface Optical Fiber.
Laser Danger! Do not stare at the optical fiber connector connected with the laser in case the invisible laser radiation harms your eyes.
1-port OC-3 ATM SML adopts long-distance fiber interface, requiring a transmission at least longer than 25km. If the transmission distance is lower than 25km, the interface will be unable to receive signals.
1-port OC-3 ATM MM should be connected with multi-mode optical fibers whereas 1-port OC-3 ATM SM / 1-port OC-3 ATM SML should be connected with single-mode optical fibers.
2-port ADSL (over | ADSL (Asymmetric Digital Subscriber’s Loop) interface card (2-port ADSL FIC) |
POTS) FIC (3C13872) | provide the users with the telephone line-based ADSL access that allow a LAN |
| subscriber to reach the DSLAM (Digital Subscriber's Loop Access Multiplexer) of |
| the exchange office through a regular analog subscriber line, and then access the |
| ATM/IP backbone or Internet. Thus, high-speed data communications and Video |
