This section contains
guidelines for wiring and cabling at your site. When preparing your site for
network connections to the Cisco ASR 920-10SZ-PD 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 install
the Cisco ASR 920-10SZ-PD Router, have all the additional external equipment
and cables on hand. For information about ordering, contact a Cisco customer
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 when planning your network connections
installing the Cisco ASR 920-10SZ-PD 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.