The Cisco NCS 560-4 Routers can be powered by a DC source or an AC source. Ensure that equipment
grounding is present and observe the power strip ratings. Make sure that the total ampere rating of all products
plugged into the power strip does not exceed 80% of the rating.
For more information about the Cisco NCS 560-4 Router power supply, see the Power Supply section.
Site Cabling Guidelines
This section contains guidelines for wiring and cabling at your site. When preparing your site for network
connections to the Cisco NCS 560-4 Router, consider the type of cable required for each component, and the
cable limitations. Consider the distance limitations for signaling, electromagnetic interference (EMI), and
connector compatibility. Possible cable types are fiber, thick or thin coaxial, foil twisted-pair, or unshielded
twisted-pair cabling.
Also consider any additional interface equipment you need, such as transceivers, hubs, switches, modems,
channel service units (CSU), or data service units (DSU).
Before you begin, read these important notes about cabling:
• Shielded cables must be used to connect to the RJ-45 alarm connector on the fan tray in order to comply
with FCC/EN55022/CISPR22 Class A emissions requirements.
Before you install the Cisco NCS 560-4 Router, have all the additional external equipment and cables on
hand. For information about ordering, contact a Cisco customer service representative.
The extent of your network and the distances between the network interface connections depend in part on
the following factors:
• Signal type
• Signal speed
• Transmission medium
The distance and rate limits referenced in the following sections are the IEEE-recommended maximum speeds
and distances for signaling purposes. Use this information as a guideline in planning your network connections
prior to installing the Cisco NCS 560-4 Router.
If wires exceed the recommended distances, or if wires pass between buildings, give special consideration to
the effect of a lightning strike in your vicinity. The electromagnetic pulse caused by lightning or other
high-energy phenomena can easily couple enough energy into unshielded conductors to destroy electronic
devices. If you have had problems of this sort in the past, you may want to consult experts in electrical surge
suppression and shielding.
Asynchronous Terminal Connections
The RSP4 provides a console port to connect a terminal or computer for local console access. The port has
an RJ45 connector and supports RS-232 asynchronous data with distance recommendations specified in the
IEEE RS-232 standard.
Cisco NCS 560-4 Router Hardware Installation Guide
27
Preparing for Installation
Site Cabling Guidelines
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