Oc3/Stm-1 Loopbacks - 3Com SuperStack II PathBuilder S330 Reference Manual

180 C 5: P B
HAPTER ATH UILDER

OC3/STM-1 Loopbacks

S330 D P
IAGNOSTICS AND ERFORMANCE
Figure 153 illustrates the loopbacks for T1/E1.
Figure 153 T1/E1 Loopbacks
Network Side
Line
The following loopbacks are available for the OC3/STM-1 interface:
Network LIne — Loops the OC3/STM-1 received data back on the output side
after the digital data has been recovered.
Local Card — Loops the transmit OC3/STM-1 output on the receive side; the
transmitted data will continue to go on the output.
Figure 154 illustrates the loopbacks for OC3/STM-1.
Figure 154 OC3/STM-1 Loopbacks
Network Side
Network Line
S
TATISTICS
T1/E1 Interface
Network Card
Local
Payload
OC3 Interface
Local Card
Payload