Zoom 5341J User manual

MODEL 5341J
CABLE MODEM
QUICK START
This Quick Start describes how to connect your Zoom cable modem to a cable modem
service. This lets your cable modem provide Internet access to a computer or other
device connected to the cable modem’s Ethernet LAN Jack. If that device is a wireless
router, wireless devices can connect through the router and Zoom cable modem to the
Internet.
Package Contents
•Cable modem
•Power cube
•Ethernet RJ-45 cable
•This Quick Start flyer
Before installing your cable modem, please read this.
You need to connect the cable modem to a cable modem service that uses any of the
popular DOCSIS standards – 3.0, 2.0, or 1.1. If you need to get cable modem service,
please speak with your cable service provider.
Your cable service provider will need to know your modem's MAC ADDRESS and may
need the account number of your cable service. Your MAC Address is printed on a
label on the bottom of your modem and is called RF MAC. Your service provider
may refer to this as a CM MAC address or as a Cable Modem MAC address. Your
account number can be found on your bill, or you can call your service provider and ask
them for you account number. You need to provide this information when you order cable
modem service, or when calling the cable company after installing your modem, or by
filling out the account setup web page that appears when you first connect your cable
modem to your provider’s network. You may also be asked for your cable modem's
model name and number, which is ZOOM 5341J. If you need the modem's serial
number, you can find it near the MAC address on the label.

If you are replacing an “old” cable modem, do this:
1Disconnect the coaxial cable from the old cable modem and connect it to your
Zoom modem. If the coaxial cable has a screw-on connector, turn the connector
clockwise when tightening the cable onto the Zoom cable modem.
2If there’s an Ethernet cable plugged into the old cable modem, unplug the
Ethernet cable from the old cable modem and plug it into the Zoom cable
modem’s LAN (yellow) jack.
3Connect the Zoom power cube between the Zoom cable modem and a live
power jack. DO NOT use your old cable modem’s power cube on your Zoom
cable modem. Make sure the cable modem’s Power Switch is ON.
4Go to “Now that your cable modem is connected, do this.” below.
If this is a first-time cable modem installation (that is, you are NOT replacing an
“old” cable modem), do this:
1Connect a “live” coaxial cable from your cable service provider to your cable
modem First check that the wire in the center of the cable’s connector is
centered, straight, and clean. If the coaxial cable has a screw-on connector, turn
the connector clockwise when tightening the cable onto the Zoom cable modem..
(If you’re not sure a cable is live, you can see whether you get a good TV signal
when that cable is used with a working TV set-top box.) Here are some ways
you can get the live cable:
Coaxial Cable Cable TV Jack
¾You have a cable TV cable (“coaxial cable”) with a male connector on the end
that isn’t connected to anything. This cable may be coming out of a wall or
connected to a cable TV jack.
¾There’s a cable TV jack in your wall. You can connect a cable TV “coaxial
cable” between that jack and your cable modem. You may have a coaxial

cable, possibly one that came with a cable modem starter kit from your cable
service provider. If you don’t have a coaxial cable, you can get one at most
electronics stores. You want one with a screw-in male F connector at each
end, with a length that works for your installation.
¾If you don’t have an available cable TV cable or wall jack, use a coaxial “T
adapter” or “splitter” available from most electronics retailers (see example at
right). Make sure you get one designed for cable modems and/or cable TV.
These typically have one female IN jack and two female OUT jacks. You can
disconnect a live cable from your TV set-top box and screw it into the IN jack of
the splitter. Then connect one coaxial cable from an OUT jack to your TV set-
top box and another coaxial cable from the other OUT jack to your cable
modem. You can see that this approach uses one splitter and 2 additional
coaxial cables, each of which has male connectors on each end. Some
electronics retailers carry the Zoom Cable Modem Connection Kit which has an
excellent splitter and 2 coaxial cables packaged together at a reasonable price.
You can also purchase splitters and coaxial cable separately if you prefer to do
that, perhaps because you need a special length of coaxial cable.
2Connect the supplied Ethernet cable between the cable modem’s yellow LAN
jack and a computer’s Ethernet jack. We recommend that you do this even if you
later plan to connect the cable modem to a router.
3Connect the Zoom power cube between the Zoom cable modem and a live
power jack. Make sure the cable modem’s Power Switch is ON.
4Go to “Now that your cable modem is connected, do this.” below.
Now that your cable modem is connected, do this.
It normally takes 5 to 30 minutes to establish an Internet link the first time a cable modem
connects to a cable service provider. This allows the cable modem to connect to the
appropriate channels for communication. You’ll see the DS, US, and/or Online modem
lights on your cable modem flashing until the Online light stays steady green to signal
success.
After the cable modem connects to your cable service provider, open your Web browser
on the computer that’s connected to your cable modem. Then refresh the screen or try to
go to a Web site. Many service providers, including Comcast, typically bring your
browser to a registration page. In that case, follow the instructions on this registration
page to register your modem.
If no web page appears after opening your browser, you need to call your cable company
to register your modem. Below is a list of some major cable service providers’ phone
numbers to call to activate your cable modem. Note that this list is subject to change.
Comcast 1 [phone] Time Warner 1 [phone]
Cox 1 [phone] Cable One 1 [phone]
RCN 1 [phone]

Once your cable modem is registered either online or through a conversation with
someone at your cable service provider, your service provider will provision your cable
modem service. Typically this takes less than 5 minutes, but in some cases this may take
up to 30 minutes to complete.
To check that your cable modem is working, open your browser and go to a familiar Web
site. If it works, Congratulations! Installation is complete for a single PC. If you want to
connect your cable modem to a router, please continue directly below. If your cable
modem is NOT working, see Troubleshooting Tips on the back of this Quick Start for
help.
How to connect your cable modem to a router instead of a
computer. This connection is optional, done after the cable modem
is working with a computer.
1The router should not be plugged in or powered up. If it is, unplug it.
2Unplug the cable modem’s Ethernet cable from your computer and plug it into
the Router’s WAN port.
3Power-up the router. Make sure the modem’s Power button is ON. Wait for the router
to complete its power-up sequence.
4The Link light of the modem should be lit to show the Ethernet connection. You’ll see
the DS (downstream), US (upstream), and Online modem lights flashing until the
Online light stays steady green to signal success. (The Blue US/DS LEDs blink
during negotiation of bonded channels, and become solid when negotiation is
complete. If after several minutes the US/DS LEDs continue to blink, this indicates
partial service (at least one designated channel has not completed bonding). This
does not generally affect performance, but your MSO may want to know so they can
adjust their network.)
5Follow your router’s instructions for setting up the router and connected devices.
6Using a computer connected to the router, open the computer’s browser and go to a
website to check that the connection between your cable modem and router is
working properly. If it works, congratulations! Installation is complete.
If the cable modem worked when connected to a computer but does not work when
connected to a router, try the following:
¾First try shutting down and restarting the router; if that doesn’t help, then try
shutting down and restarting each computer connected to the router.
¾Power off your cable modem, router and any computers connected to the
router. Power on the cable modem and allow it time to resynchronize with
the cable system. Once the cable modem is synchronized with its online
light steady green, power up your router, then power up any computers
connected to your router.

¾You may also need to check that the DHCP client on the router’s WAN port
is enabled. If you need help, look in your router’s manual or contact your
router manufacturer.
¾If that does not solve the problem, you may need to contact your cable
service provider and give them the MAC address of the router’s WAN port.
Cable Modem Rear Panel
LAN Reset RF (Cable) Power ON/OFF
Port Description
Connect your Ethernet cable between this port and a
computer or router.
LAN (Yellow)
Press this button for 5 seconds in the unlikely event
that you need to restore factory default settings.
Reset
RF (Cable) Connect your coaxial cable line to this port.
POWER (AC IN) Connect the supplied power cube to this port.
Push the button in to turn the power ON. Push the
button again to turn the power OFF.
ON/OFF
Please note the following:
¾Do not block the modem vents in any way.
¾Do not place the modem near a heating or air conditioning duct, in direct sunlight,
anywhere susceptible to drastic temperature changes, or where it’s very hot or very
cold.

Front Panel LEDs
Your cable modem has several lights on its front panel to help you monitor the cable
modem’s status.
LIGHT COLOR DESCRIPTION
ON: Power is supplied to the cable modem/router
Power Green OFF: Power is not supplied to the cable modem/router
Green Blinking: Scanning for DS channel
DOWNSTREAM Green or Green ON: Synchronized on 1 channel only
Downstream
sync Blue Blue Blinking: Negotiating bonded channel(s)†
Blue ON: Bonded with 1 or more channels
Green Blinking: Ranging is in progress.
Green ON: Ranging is complete; operate on 1 channel
Green or
UPSTREAM Blue Blinking: Negotiating bonded channel(s)†
Blue
Upstream sync Blue ON: Bonded with 1 or more channels
OFF: Upstream channel is inactive
Blinking: Cable interface is acquiring IP, Time, and
configuration
Online Green ON: Cable modem/router is online
O
FF: Cable modem/router is offline
Blinking: Data is flowing and the Ethernet link is connected
LINK Green Green: Connected
Ethernet LAN
port OFF: No Ethernet link detected
†If Blue light blinks continuously, this indicates partial service (at least one designated channel has
not completed bonding). This does not generally affect performance, but your MSO may want to
know so they can adjust their network.

Troubleshooting Tips
Problem: I cannot access the Internet. What should I do first?
Solution: Make sure that your Cable Modem’s MAC address is registered with your cable
provider. When your provider’s representative or setup software asks for your MAC
address, you can find the CM MAC address on your modem’s bottom label. The CM
MAC address is the same as the RF MAC address printed on the label. If you are
having a problem, you may need to check with your cable service provider to make
sure the service provider set up its system properly for your cable modem.
¾Make sure your Cable Modem’s Power button is ON and that the cable modem’s
power cube is plugged into a live power outlet.
¾Check your Cable Modem’s Ethernet and coaxial cable connections. Make sure the
coaxial cable is tightly connected. Make sure that the Ethernet cable that connects a
computer or router to your Cable Modem is plugged in all the way on both ends.
¾Power off your modem for at least 10 seconds, then power it back on.
¾Restart your computer or other devices connected to the Cable Modem. This
ensures that they receive a correct IP address.
Problem: What do I do if my cable service provider wants me to access the Configuration
Manager?
Solution: Make sure you have a connection between your computer or other device and the cable
modem.
1On your computer, open a browser and type in the address 192.168.100.1 Enter
User Name: admin
Password: password
2Now you will see status information about your cable modem and its
connection that you can read back to your service provider.
Problem: What if I'm told that my Model 5341J cable modem isn't approved for my cable
modem service?
Solution: This modem has been certified by CableLabs and by Comcast, Time Warner Cable,
Cox, Bright House, and other cable modem service providers. You can often find a list
of certified modems on the Web site of your cable service provider. Beware of installers
who try to get you to use their cable modem instead of a Zoom cable modem. Some of
these installers provide bad information because they are misinformed or because they
earn a fee for providing their cable modem. If the installer tells you that a cable modem
provided by him or the service provider is "free", that's almost never true. When in
doubt, check the cable service provider’s Web site!
•In the unlikely event that you are told that your Zoom modem is not approved by your cable
modem service, please email us at [email protected] or call us at [phone].
•Approval information for CableLabs, Comcast, Cox, and CableOne®is available at
www.zoomtel.com/cableOK

If You Need Help
We encourage you to register your product and to notice the many support options
available from Zoom. Please go to www.zoomtel.com/techsupport From here you can
register your modem and/or contact our technical support experts and/or use our
intelligent database SmartFactstm and/or get warranty information.
US: [phone]
Return of Defective Units
Please contact your local distributor or retailer for factory-authorized repair or
replacement of your in-warranty defective product. If you are unable to reach your
distributor or retailer, you can contact Zoom Technical Support in the United States by
calling: [phone]
Please note that you are responsible for any charges (including brokerage or customs
and duties) associated with shipping the defective unit to Zoom for repair. During the first
year Zoom will pay return ground shipping to the customer in the continental U.S. After
the first year you may be required to pay a shipping and handling fee. Any applicable
customs, duties and brokerage charges to import the product are your responsibility.
Limited Warranty
Zoom Telephonics, Inc. warrants this product against defects in material and
workmanship for a warranty period of 2 years. To read the full warranty, please see
www.zoomtel.com/cablewarranty
Safety Issues & Warnings
WARNING: Risk of electric shock. Do NOT expose to water or moisture.
¾The cable modem is a high-performance communications device designed for home and office
environments.
¾Do NOT use the cable modem outdoors. Keep the cable modem in an environment that is
between 0°C and 40°C (between 32°F and 104°F).
¾To avoid overheating the cable modem, do NOT place any object on top of the cable modem.
¾Do NOT place the cable modem in a confined space.
¾Do NOT restrict the flow of air around the cable modem.
¾The manufacturer assumes no liabilities for damage caused by any improper use of the cable
modem.
¾Make sure the voltages and frequency of the power outlet matches the electrical rating labels
on the power cube.
FCC Statement
This device complies with Class B Part 15 of the FCC Rules. The device generates, uses and can radiate
radio frequency energy and, if not installed and used as instructed, may cause harmful interference to
radio communication. Only Coaxial cables are to be used with this device in order to ensure compliance
with FCC emissions limits. Accessories connected to this device by the user must comply with FCC

Class B limits. The manufacturer is not responsible for any interference which results from use of
improper cables, or which results from unauthorized changes or modifications to the device.
UL Listing
This product is UL-Listed and complies with all applicable electrical and fire safety requirements.
Disclaimer
Zoom Telephonics, Inc. (hereinafter “Zoom”) assumes no liabilities with respect to the contents of this
document. Zoom also reserves the right to revise this document or update occasionally the content
hereof without any obligation to notify any person of such revisions or amendments. Specifications
subject to change without notice.
0775-L 27670-EL ©2015