Preparing for Installation 2-103
Preparing Network Connections
Figure 2-29 E1 Interface Cable for 120-Ohm, Balanced Connections
(with Twinax Connectors)
Figure 2-30 E1 Interface Cable for 120-Ohm, Balanced Connections
(with RJ-45 Connector)
Serial Connection Equipment
The FSIP supports synchronous serial connections at speeds of up to 8 Mbps (16 Mbps aggregate on
an eight-port FSIP); the speed depends on the type of electrical interface used. Use EIA/TIA-232 for
speeds of 64 kbps and below, and use X.21, EIA/TIA-449, V.35, or EIA-530 for higher speeds. All
FSIP ports use an identical 60-pin, D-shell receptacle.
Universal Serial Cables
Each serial port requires a serial port adapter cable that provides the network connection and defines
the electrical interface type and mode of that port. All adapter cables use a 60-pin D-shell plug at the
router (FSIP) end. The network end of each cable provides the standard connector used with each
respective interface type. (See Figure 2-31.) Cables are available for all interfaces except EIA-530
in DTE mode with a plug at the network end, or in DCE mode with a receptacle at the network end.
The mode, DCE or DTE, is labeled on the connectors at both ends of the cables. Metric (M3)
thumbscrews are included with each port adapter cable to allow connection to devices that use metric
hardware.
Following are the available interface cable options for the mode and network-end connectors for
each:
• EIA/TIA-232: DTE mode with DB-25 plug; DCE mode with DB-25 receptacle
• EIA/TIA-449: DTE mode with 37-pin D-shell plug; DCE mode with 37-pin D-shell receptacle
• V.35: DTE mode or DCE mode with 34-pin Winchester-type V.35 plug; DTE mode or DCE mode
with 34-pin Winchester-type V.35 receptacle
• X.21: DTE mode with DB-15 plug; DCE mode with DB-15 receptacle
• EIA-530: DTE mode with DB-25 plug
H2424
H2422
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