Serial Connections - Cisco 7000 Hardware Installation And Maintenance

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Connect the bypass switch control cable. If the control cable on your optical bypass switch uses
a mini-DIN connector, connect the cable directly to the mini-DIN optical bypass port on the FIP.
If the switch uses a standard DIN connector, use the optical bypass adapter cable (CAB-FMDD)
supplied with each FIP. Connect the DIN end of the adapter cable to the DIN on the control cable,
and connect the mini-DIN end of the adapter cable to the mini-DIN optical bypass port on
the FIP.
Figure 3-16
To primary ring
From secondary ring
To secondary ring
From primary ring
Bypass operation

Serial Connections

All FSIP ports support any available interface type and mode. The serial adapter cable determines
the electrical interface type and mode of the port to which it is connected. EIA/TIA-232,
EIA/TIA-449, V.35, and X.21 interfaces are available in DTE mode with a plug at the network end
and in DCE mode with a receptacle at the network end. EIA-530 is available only in DTE mode with
a plug. For descriptions and illustrations of each connector type, refer to the section "Serial
Connection Equipment" in the chapter "Preparing for Installation." For cable pinouts, refer to the
appendix "Cabling Specifications."
When connecting serial devices, consider the adapter cables as an extension of the router for external
connections; therefore, use DTE cables to connect the router to remote DCE devices such as modems
or data service units (DSUs), and use DCE cables to connect the router to remote DTE devices such
as a host, PC, or another router. (See Figure 3-17.) The optional or additional connection equipment
required depends on the interface type of each port.
A pair of metric thumbscrews is included with each port adapter cable. If you plan to connect to a
remote device that uses metric hardware, replace the standard 4-40 thumbscrews at the network end
of the port adapter cable with the M3 metric thumbscrews.
FDDI Connection with Optical Bypass—CX-FIP-SS
Optical bypass Optical bypass
switch control cable Mini-DIN
CX-FIP-SS
Connecting Interface Cables
Installing the Router 3-137