SMC Networks SMC7800A User manual

TigerAccess™EE
Ethernet-over-VDSL2 CPE
◆High-speed Internet access over existing phone lines
◆Concurrent data/phone services over single connection
◆Always-on digital connection provides quick initialization
◆Seamless rate adaptation enhances quality in video
applications
◆Supports PC or Mac with Ethernet adapter card installed
Installation Guide
SMC7800A/VCP

20 Mason,
Irvine, CA 92618
Phone: [phone]
TigerAccess-EE CPE
Installation Guide
From SMC’s Tiger line of feature-rich workgroup LAN solutions
February 2007
Pub. # 150200004100H

Information furnished by SMC Networks, Inc. (SMC) is believed to be accurate and reliable. However, no
responsibility is assumed by SMC for its use, nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or
patent rights of SMC. SMC reserves the right to change specifications at any time without notice.
Copyright © 2007 by
SMC Networks, Inc.
20 Mason
Irvine, CA 92618
All rights reserved. Printed in Taiwan
Trademarks:
SMC is a registered trademark; and EZ Switch, TigerAccess, TigerStack and TigerSwitch are trademarks of
SMC Networks, Inc. Other product and company names are trademarks or registered trademarks of their
respective holders.

i
L IMITED W ARRANTY
Limited Warranty Statement: SMC Networks, Inc. (“SMC”) warrants its products to be
free from defects in workmanship and materials, under normal use and service, for the
applicable warranty term. All SMC products carry a standard 90-day limited warranty from
the date of purchase from SMC or its Authorized Reseller. SMC may, at its own discretion,
repair or replace any product not operating as warranted with a similar or functionally
equivalent product, during the applicable warranty term. SMC will endeavor to repair or
replace any product returned under warranty within 30 days of receipt of the product.
The standard limited warranty can be upgraded to a Limited Lifetime* warranty by registering
new products within 30 days of purchase from SMC or its Authorized Reseller. Registration
can be accomplished via the enclosed product registration card or online via the SMC Web
site. Failure to register will not affect the standard limited warranty. The Limited Lifetime
warranty covers a product during the Life of that Product, which is defined as the period of
time during which the product is an “Active” SMC product. A product is considered to be
“Active” while it is listed on the current SMC price list. As new technologies emerge, older
technologies become obsolete and SMC will, at its discretion, replace an older product in its
product line with one that incorporates these newer technologies. At that point, the obsolete
product is discontinued and is no longer an “Active” SMC product. A list of discontinued
products with their respective dates of discontinuance can be found at:
http://www.smc.com/index.cfm?action=customer_service_warranty.
All products that are replaced become the property of SMC. Replacement products may be
either new or reconditioned. Any replaced or repaired product carries either a 30-day limited
warranty or the remainder of the initial warranty, whichever is longer. SMC is not responsible
for any custom software or firmware, configuration information, or memory data of
Customer contained in, stored on, or integrated with any products returned to SMC pursuant
to any warranty. Products returned to SMC should have any customer-installed accessory or
add-on components, such as expansion modules, removed prior to returning the product for
replacement. SMC is not responsible for these items if they are returned with the product.
Customers must contact SMC for a Return Material Authorization number prior to returning
any product to SMC. Proof of purchase may be required. Any product returned to SMC
without a valid Return Material Authorization (RMA) number clearly marked on the outside
of the package will be returned to customer at customer’s expense. For warranty claims within
North America, please call our toll-free customer support number at [phone].
Customers are responsible for all shipping charges from their facility to SMC. SMC is
responsible for return shipping charges from SMC to customer.

ii
WARRANTIES EXCLUSIVE: IF AN SMC PRODUCT DOES NOT OPERATE AS
WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY SHALL BE REPAIR OR
REPLACEMENT OF THE PRODUCT IN QUESTION, AT SMC’S OPTION. THE
FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN
LIEU OF ALL OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED,
EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE,
INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE. SMC NEITHER ASSUMES NOR
AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER
LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION,
MAINTENANCE OR USE OF ITS PRODUCTS. SMC SHALL NOT BE LIABLE
UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THE
ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY
CUSTOMER’S OR ANY THIRD PERSON’S MISUSE, NEGLECT, IMPROPER
INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR, OR
ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY
ACCIDENT, FIRE, LIGHTNING, OR OTHER HAZARD.
LIMITATION OF LIABILITY: IN NO EVENT, WHETHER BASED IN CONTRACT
OR TORT (INCLUDING NEGLIGENCE), SHALL SMC BE LIABLE FOR
INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE
DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE, LOSS OF BUSINESS, OR
OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE
SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE, OR
INTERRUPTION OF ITS PRODUCTS, EVEN IF SMC OR ITS AUTHORIZED
RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES
OR THE LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
CONSUMER PRODUCTS, SO THE ABOVE LIMITATIONS AND EXCLUSIONS
MAY NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL
RIGHTS, WHICH MAY VARY FROM STATE TO STATE. NOTHING IN THIS
WARRANTY SHALL BE TAKEN TO AFFECT YOUR STATUTORY RIGHTS.
* SMC will provide warranty service for one year following discontinuance from the active
SMC price list. Under the limited lifetime warranty, internal and external power supplies, fans,
and cables are covered by a standard one-year warranty from date of purchase.
SMC Networks, Inc.
20 Mason
Irvine, CA 92618

iii
COMPLIANCES
FCC - Class B
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that the interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient the receiving antenna
• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected
• Consult the dealer or an experienced radio/TV technician for help
FCC Caution: Any changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate this equipment.
Note: In order to maintain compliance with the limits of a Class B digital device, you are
required to use a quality interface cable when connecting to this device. You may use
unshielded twisted-pair (UTP) for RJ-45 connections - Category 3 or better for 10 Mbps
connections, Category 5 or better for 100 Mbps connections.
FCC - Part 68
This equipment complies with Part 68 of the FCC rules and the requirements adopted by the
ACTA. On the bottom of this equipment is a label that contains, among other information, a
product identifier in the format US: 1KRDL09BSMC7800A. If requested, this number must
be provided to the telephone company.
This equipment uses the following USOC jacks: RJ-11.
The REN is useful to determine the quantity of devices you may connect to your telephone
line and still have those entire devices ring when your telephone number is called. In most,
but not all areas, the sum of the REN of all devices connected to one line should not exceed
five (5.0). To be certain of the number of devices you may connect to you line, as determined
by the REN, you should contact your local telephone company to determine the maximum
REN for your calling area.

C OMPLIANCES
iv
If your equipment causes harm to the telephone network, the telephone company may
discontinue your service temporarily. If possible, they will notify you in advance. But if
advance notice is not practical, you will be notified as soon as possible. You will be informed
of your right to file a complaint with the FCC. Your telephone company may make changes in
its facilities, equipment, operations or procedures that could affect the proper functioning of
your equipment. If they do, you will be notified in advance to give you an opportunity to
maintain uninterrupted telephone service.
If you experience trouble with this telephone equipment, please contact please contact our
company at the numbers shown on back of this manual for information on obtaining service
or repairs. The telephone company may ask that you disconnect this equipment from the
network until the problem has been corrected or until you are sure that the equipment is not
malfunctioning.
This equipment may not be used on coin service provided by the telephone company.
Connection to party lines is subject to state tariffs.
Industry Canada - Class B
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus as set out in the interference-causing equipment standard entitled “Digital
Apparatus,” ICES-003 of Industry Canada.
Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux appareils
numériques de Classe B prescrites dans la norme sur le matérial brouilleur: “Appareils
Numériques,” NMB-003 édictée par l’Industrie.
CE Mark Declaration of Conformance for EMI and
Safety (EEC)
SMC contact for these products in Europe is:
SMC Networks Europe,
Edificio Conata II,
Calle Fructuós Gelabert 6-8, 2o, 4a,
08970 - Sant Joan Despí, Barcelona, Spain.
This information technology equipment complies with the requirements of the Council
Directive 89/336/EEC on the Approximation of the laws of the Member States relating to
Electromagnetic Compatibility and 73/23/EEC for electrical equipment used within certain
voltage limits and the Amendment Directive 93/68/EEC. For the evaluation of the
compliance with these Directives, the following standards were applied:

C OMPLIANCES
v
Warning: Do not plug a phone jack connector in the RJ-45 port. This may damage this device.
Attention: Les raccordeurs ne sont pas utilisés pour le système téléphonique!
RFI Emission: • Limit class A according to EN 55022:1998
• Limit class B for harmonic current emission according to
EN 61000-3-2/1995
• Limitation of voltage fluctuation and flicker in low-voltage supply
system according to EN 61000-3-3/1995
Immunity: • Product family standard according to EN 55024:1998
• Electrostatic Discharge according to EN 61000-4-2:1995
(Contact Discharge: ±4 kV, Air Discharge: ±8 kV)
• Radio-frequency electromagnetic field according to EN 61000-4-3:1996
(80 - 1000 MHz with 1 kHz AM 80% Modulation: 3 V/m)
• Electrical fast transient/burst according to EN 61000-4-4:1995 (AC/
DC power supply: ±1 kV, Data/Signal lines: ±0.5 kV)
• Surge immunity test according to EN 61000-4-5:1995
(AC/DC Line to Line: ±1 kV, AC/DC Line to Earth: ±2 kV)
• Immunity to conducted disturbances, Induced by radio-frequency
fields: EN 61000-4-6:1996 (0.15 - 80 MHz with
1 kHz AM 80% Modulation: 3 V/m)
• Power frequency magnetic field immunity test according to
EN 61000-4-8:1993 (1 A/m at frequency 50 Hz)
• Voltage dips, short interruptions and voltage variations immunity test
according to EN 61000-4-11:1994 (>95% Reduction @10 ms, 30%
Reduction @500 ms, >95% Reduction @5000 ms)
LVD: • EN 60950-1:2001

C OMPLIANCES
vi
Warnings and Cautionary Messages
Warnings (in German)
Environmental Statement
The manufacturer of this product endeavours to sustain an environmentally-friendly policy
throughout the entire production process. This is achieved though the following means:
• Adherence to national legislation and regulations on environmental production standards.
• Conservation of operational resources.
• Waste reduction and safe disposal of all harmful un-recyclable by-products.
• Recycling of all reusable waste content.
• Design of products to maximize recyclables at the end of the product’s life span.
• Continual monitoring of safety standards.
End of Product Life Span
This product is manufactured in such a way as to allow for the recovery and disposal of all
included electrical components once the product has reached the end of its life.
Warning: This product does not contain any serviceable user parts.
Warning: Installation and removal of the unit must be carried out by qualified personnel
only.
Warning: When connecting this device to a power outlet, connect the field ground lead
on the tri-pole power plug to a valid earth ground line to prevent electrical
hazards.
Caution: Wear an anti-static wrist strap or take other suitable measures to prevent
electrostatic discharge when handling this equipment.
Caution: Do not plug a phone jack connector in the RJ-45 port. This may damage this
device. Les raccordeurs ne sont pas utilisé pour le système téléphonique!
Caution: Use only twisted-pair cables with RJ-45 connectors that conform to FCC
standards.
Achtung: Dieses Produkt enthält keine Teile, die eine Wartung vom Benutzer benötigen.
Achtung: Installation und Deinstallation des Gerätes müssen von qualifiziertem
Servicepersonal durchgeführt werden.
Achtung: Wenn das Gerät an eine Steckdose angeschlossen wird, muß der Masseanschluß
am dreipoligen Netzstecker mit Schutzerde verbunden werden, um elektrische
Gefahren zu vermeiden.
Achtung: Dieses Gerät nutzt Laser zur Signalübertragung über Glasfasern. Die Laser
entsprechen den Anforderungen an eine Lasereinrichtung der Klasse 1 und sind
durch ihre Bauart im normalen Betrieb sicher für die Augen. Trotzdem sollte
niemals direkt in den einen Übertragungskanal geblickt werden, wenn er
eingeschaltet ist.

C OMPLIANCES
vii
Manufacturing Materials
There are no hazardous nor ozone-depleting materials in this product.
Documentation
All printed documentation for this product uses biodegradable paper that originates from
sustained and managed forests. The inks used in the printing process are non-toxic.
Purpose
This guide details the hardware features of the switches, including Its physical and
performance-related characteristics, and how to install each switch.
Audience
This guide is for system administrators with a working knowledge of network management.
You should be familiar with switching and networking concepts.
Zielgruppe Dieser Anleitung ist fuer Systemadministratoren mit Erfahrung im
Netzwerkmangement. Sie sollten mit Switch- und Netzwerkkonzepten vertraut sein.

C OMPLIANCES
viii

ix
T ABLE OF C ONTENTS
1 About the TigerAccess-EE CPE . . . . . . . . . . . . . . . . . 1-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
VDSL Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2 Hardware Description . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Front and Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
System and Port Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Powering On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Configuring the TCP/IP Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
A Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
Diagnosing CPE Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
If You Cannot Connect to the Internet . . . . . . . . . . . . . . . . . . . . . . . . . A-2
B Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1
Twisted-Pair Cable and Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . B-1
10BASE-T/100BASE-TX Pin Assignments . . . . . . . . . . . . . . . B-2
Straight-Through Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
Crossover Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Cable Testing for Existing Category 5 Cable . . . . . . . . . . . . . . . B-4
RJ-11 Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5
C Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1
VDSL Functional Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Physical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Compliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

T ABLE OF C ONTENTS
x
Glossary
Index

1-1
C HAPTER 1
A BOUT THE
T IGER A CCESS -EE CPE
Overview
This Ethernet-Over-VDSL2 CPE system consists of an end-user CPE
(Customer Premise Equipment) and a VDSL2 switch that are connected
by standard telephone cable. The VDSL connection delivers an Ethernet
data link rated up to 100 Mbps symmetric (full duplex), while
simultaneously supporting standard telephone services. The system can be
deployed in any multi-dwelling/multi-tenant environment (apartment
blocks, hotels, or office complexes) to provide both high-speed Internet
access and telephone services without any need for re-wiring.
VDSL switches combine both the data and phone signals coming from
your Internet and telephone service providers, and pass these signals
directly over standard telephone wiring to multiple users in the same
building. The CPE is used to separate these signals and pass them on to a
customer’s computer and telephone equipment.
The VDSL2 switch is typically located in a wiring closet or other central
location of a multi-dwelling/multi-tenant unit, campus, or enterprise. An
Internet connection is provided from the ISP to the customer’s building
over fiber optic cable, running Ethernet directly over a 1 to 10 Gbps
connection. This kind of WAN connection is referred to as Fiber To The
Building (FTTB). Data signals entering a site are first passed through an
Ethernet switch that segregates the signals for individual user connections,
and are then fed into the switch. Phone signals are also routed from PBX/

A BOUT THE T IGER A CCESS -EE CPE
1-2
MDF distribution equipment into the switch. The data and phone signals
for each user are combined in the switch, and passed over VDSL lines to
individual customers.
The CPE at the customer end of the VDSL line connects to any PC or
Macintosh equipped with a 10BASE-T or 100BASE-TX network interface
card. Your existing telephone, modem, or fax machine simply plugs into
the CPE’s phone port. There is no need for splitters, terminators, or filters.
In fact, there is no need to modify the home wiring at all. And because the
VDSL connection is based on Ethernet, no complex software
configuration is required.

VDSL T ECHNOLOGY
1-3
VDSL Technology
VDSL (Very High Bit-Rate Digital Subscriber Line) is at the high-end of all
the DSL technologies, offering the best combination of fiber optics and
copper to provide high-speed broadband Internet access. VDSL’s primary
application is in providing a broadband data service to multi-tenant
residential or commercial buildings. In this implementation, fiber optic
cable carries the data from a telephone company’s central office to the
building; then the installed telephone copper wires take the data and
deliver it to individual units within that building.
Figure 1-1 Providing Broadband Internet Access through VDSL
VDSL provides high-speed Internet access over existing phone lines by
making use of previously unused frequency bandwidth above the voice
band (i.e., up to 30 MHz with VDSL2). By placing VDSL signals above the
frequency of the voice signal, a VDSL service can coexist on the same line
with other telephone services. VDSL can operate symmetrically, providing
the same data rate in both directions, or asymmetrically, providing a higher
ISP
(Internet)
Central Offi
(PSTN)
Punch Down
Blocks /
Patch Panels
PBX
Telephone/Fax
Telephone
VDSL CPE
VDSL CPE
VDSL
Concentrators Ethernet
Switch
1
ES3526F
ES3526F
Telephone Line from Central Office
Fiber Optic Link to ISP
Local Servers
(Locally Hosted Services,
Video Servers, Billing)
Existing Phone
Lines to Clients
Multi-dwelling/Multi-tenant Building
Floor 2
Floor 1
Rooms/Clients
Rooms/Clients
VDSL Lines
Phone Lines
Ethernet
Links to Switch

A BOUT THE T IGER A CCESS -EE CPE
1-4
data rate in the downstream (receive) direction than in the upstream
(transmit) direction.
VDSL delivers high-performance online applications, such as high-quality
video and other switched multimedia services. This Ethernet VDSL2 CPE
system provides robust performance, with a symmetric data rate up to
100 Mbps, and a range up to 200 meters (656 ft).
This system is based on advanced VDSL2 Multi-Carrier Modulation
(MCM) technology with adaptive channel equalization that overcomes
bridge taps and other line distortions. Reed-Solomon Forward Error
Correction and interleaving protects against errors due to impulse noise,
and enables recovery from signal interruptions. Frequency Division
Duplexing (FDD) separates downstream and upstream channels and
allows VDSL signals to coexist with regular telephone services. A power
back-off mechanism is also implemented to reduce noise from crosstalk in
line bundles.
Features and Benefits
VDSL features (CPE side) include:
• High-speed Internet access over existing phone lines
• VDSL2 connection provides the following rate/range options:
• Concurrent data and telephone services (voice/ISDN) over a single
connection
• Always-on digital connection eliminates dial-up delays, providing
transparent reconnection when initiating a network request
Table 1-1 Maximum Rates and Distances
Rate Mode Max. Range
100 Mbps Symmetric 200 m (656 ft)
80/35 Mbps Asymmetric 300 m (984 ft)

S YSTEM R EQUIREMENTS
1-5
• Supports ITU-T VDSL/VDSL2 and ANSI T1E1.4 Part 1 VDSL
interface standards, as well as other evolving ETSI, ANSI, and ITU
VDSL standards for the copper local loop
• Spectral compatibility with VDSL, VDSL2, ADSL, ADSL2+, ISDN
(2B1Q/4B3T), Smartphone digital PBX extensions and narrowband
interference
• Robust operation on severely distorted lines
• Supports power back-off algorithm that permits a mixed distance
deployment
• LEDs indicate VDSL link status, and power
• Simple plug-and-play installation
Additional VDSL2 features (CPE side) include:
• Fast startup for quick initialization
• Trellis coding modulation for higher performance
• Seamless rate adaption for enhanced quality in video applications
• Variable tone spacing enables best performance for long and short
reach lines
• Improved framing, overhead channel, and interleaving
System Requirements
Before you start installing the CPE, make sure you can provide the right
operating environment. See the following installation requirements:
• A PC or Macintosh with a 10/100 Mbps Ethernet adapter card
installed.
• For Internet access, the computer must be configured for TCP/IP.

A BOUT THE T IGER A CCESS -EE CPE
1-6
• Power requirements: 12 VDC via the included AC power adapter.
Make sure that a properly grounded power outlet is within 1.8 m (6 ft)
of the CPE.
• The CPE should be located in a cool dry place, with at least
5 cm (2 in.) of space on all sides for ventilation.
• Place the CPE out of direct sunlight, and away from heat sources or
areas with a high amount of electromagnetic interference. The
temperature and humidity should be within the ranges listed in the
specifications.
• Be sure that the CPE is also accessible for the Ethernet and telephone
cabling.