Cisco MC3810 Series Quick Start Manual page 6

Install Chassis and Connect Cables (continued)
Identifying Cable Types
Same color
8-Conductor Rollover Cable
Pin 1
Pin 8
Hold the connectors side-by-side, with the tab at the
back. The colored wires are in the opposite sequence
at opposite ends of the cable. If your cable came from
Cisco Systems, pin 1 is white on one plug, and pin 8
is white on the opposite plug. (A rollover cable
reverses the wire connections at the opposite ends:
1 to 8, 2 to 7, 3 to 6, 4 to 5, 5 to 4, 6 to 3, 7 to 2, and
8 to 1.)
8-Conductor Straight-Through Cable
Same color
Pin 1
Pin 1
4
Hold the connectors side-by-side, with the tab at the
back. The colored wires are in the same sequence at
opposite ends of the cable. (A straight-through cable
connects like-numbered pins at opposite ends: 1 to 1,
2 to 2, 3 to 3, 4 to 4, 5 to 5, 6 to 6, 7 to 7, and 8 to 8.)
RJ-48 T1/E1 Cable
5
1
View the connector for the Cisco MC3810 port, with
the tab at the back. There are wires attached to four
of the pins: 1, 2, 4, and 5. (The pinout at the opposite
end depends on the interface at that end.)