Front Panel 19
Dual-Port T3
The dual-port T3 (also known as DS3) PIM (shown in Figure 11) provides a physical
connection to T3 network media types. The T3 PIM includes two physical T3 ports
with integrated data service unit (DSU).
Figure 11: T3 PIM
The T3 PIM provides the following key features:
Onboard network processor
Integrated DSU—eliminates the need for a separate external device
Subrate and scrambling options with support for major DSU vendors
Independent internal and external clocking system
Loopback, BERT, and T3 far-end alarm and control (FEAC) diagnostics
Four-Port Fast Ethernet
The four-port 10/100-Mbps Fast Ethernet PIM (shown in Figure 12) has four
physical Fast Ethernet ports.
Figure 12: Four-Port Fast Ethernet PIM
The four-port Fast Ethernet PIM provides the following features:
Full-duplex and half-duplex modes
Autonegotiation through medium-dependent interface (MDI) and MDI
crossover (MDI-X) support
Maximum frame size of 1518 bytes
RX
TX
STATUS
DS3
4x10/100
0
1
2
3
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