Installation guide

Making External Connections to Cisco 4000 Series Routers 4-81
Network Connection Considerations
Figure 4-36 Dual-Attachment Multimode FDDI Module—End View
Figure 4-37 Dual-Attachment FDDI Optical Bypass Switch and PHY Connections
H1400a
PHY-B
PHY-A
FDDI
OPT-BYPASS
Multimode ports
Alignment groove
Alignment groove
Optical bypass
switch connector
LEDs (2)
PHY-B
PHY-A
PHY-B
RING OP
PHY-A
RING OP
Mounting
screw locations
Optical bypass
switch
PHY-B
PHY-B
Bypass operation
T
o
ng
PHY-B
PHY-A
RING OP
RING OP
FDDI
OPT-BYPASS
Optical
bypass switch
connector (DIN)
Dual-attachment
multimode
FDDI module
H1405a
Optical bypass
interface cable
PHY-A
PHY-A
Mounting
screw locations