Cisco EF4116 Hardware Installation And Maintenance Manual page 63

Figure 3-5 Making Serial Connections to the Four-Port Serial Module
Four-port serial network processor module
Router
(rear view)
Serial port
60-pin connector
Figure 3-6 Making Serial Connections to the Dual Serial Module
Dual-port serial network processor module
Router
(rear view)
Serial port
50-pin connector
PORT-3
PORT-2
Ports (4)
PORT-1
PORT-0
P-3 P-2
P-1 P-0
P-3 P-2
P-1` P-0
AUX
EIA/TIA-232, EIA/TIA-449, V.35,
X.21, or EIA-530 connector
(EIA/TIA-449 shown)
AUX
EIA/TIA-232, EIA/TIA-449, V.35,
X.21, or EIA-530 connector
(EIA/TIA-449 shown)
Making Network Connections
Modem or
CSU/DSU
EIA/TIA-449 port
Serial ports
Modem or
CSU/DSU
EIA/TIA-449 port
Installing the Router 3-5