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Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation and Initial Configuration Guide
OL-13208-01
Chapter3 Preparing Your Site for Installation
Site Planning
Tabl e 3-6 lists AC and DC power supply system rating requirements for all Cisco ASR 1000 Series
Routers.
Site Cabling Guidelines
This section contains guidelines for wiring and cabling at your site. When preparing your site for
network connections to the Cisco 1000 Series Router, consider the type of cable required for each
component, and the cable’s limitations. Consider the distance limitations for signaling, 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 (CSUs), or data service units (DSUs).
Note The E1 interface on the Cisco 8-Port Channelized T1/E1 SPA interface uses RJ-48c receptacles for E1
(120-Ohm) cables with RJ-45 connectors. You can use all ports simultaneously. Each E1 connection
supports interfaces that meet the G.703 standards. The RJ-45 connection does not require an external
transceiver. The E1 ports are E1 interfaces that use 120-ohm shielded twisted-pair (STP) cables.
Warning
Shielded T1/E1 cables must be used to comply with FCC/EN55022/CISPR22 Class A emissions
requirements on the 8-port channelized T1/E1 SPA interface.
Before you install the Cisco 1000 Series Router, have all additional external equipment and cables on
hand. For ordering information, contact a customer service representative.
The extent of your network and the distances between 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 1000 Series Router.
If wires exceed 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.
Table3-6 AC and DC Power Supply System Rating Specifications for the Cisco ASR 1000 Series Routers
Description Specification
Power supply declared ratings AC = 100-240 VAC
DC = –48/ –60 VDC
Line frequency rating 50/60 Hz