Comtrend Corporation NexusLink 3120 User manual

For General Information,
Visit Our Website at www.nexicom.net
To Contact Us for Technical Support
and General Inquiries:
On the Phone: [phone] or 1-888-639-4266
Monday–Friday, 8 am–10 pm,
Saturday 8 am–5 pm, Sunday 9 am–5 pm.
By Email: suppor[email protected]
Through our Knowledge Base: https://kb.nexicom.net
Comtrend NexusLink 3120
High Speed DSL
Setup Guide
More than you expect

Comtrend NexusLink 3120 – Wireless Gateway 3
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Welcome to Nexicom High Speed DSL
Congratulations, now that you are connected to Nexicom’s High Speed DSL
service you will have the freedom to take full advantage of all the Internet has
to offer. Your DSL connection will change the way you surf. You will now be
exposed to a whole new fast-paced online world.
Nexicom provides you with outstanding customer service and experienced
technicians who are available to answer your questions.
As a Nexicom Internet subscriber you will experience many extended services;
Email Anti-Virus Scanning and Anti-Spam help to protect your computer
system. Nexicom also provides Unlimited Monthly Usage so whether you’re
downloading, uploading or just plain surfing there are no worries about how
much you use.
The Comtrend NexusLink 3120 is a high-quality dual band WiFi router with a
DSL modem built in. Integrated 5 Gigabit Ethernet ports support WLAN 802.11n
2.4GHz and 802.11ac 5GHz frequency bands. The Nexus Link 3120 is designed
for high speed applications and is suitable for triple play services.
NexusLink 3120 has a USB 3.0 host port which provides high speed access for
USB devices such as printer servers, 3G dongle, HDDs, and supports DLNA and
Samba accessibility.
What’s included in the box?
1. Comtrend NexusLink 3120 – Wireless Gateway
2. AC Power Adapter
3. Ethernet Cable
4. Phone Cable
5. Filters
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4
STEP 1
Connecting the Phone Filters
The filters included with your Nexicom High Speed installation kit are to be
used with any type of equipment that utilizes a telephone jack. This includes
telephones, fax machines, answering machines, alarm systems and satellite
receivers. Start by unplugging the phone cable for your existing phone
equipment from the telephone jack and plug it into the end of the filter that
says “PHONE” then plug the short phone cable end of the filter back into the
phone jack.
Note: If you want to plug BOTH your Comtrend NexusLink 3120 and a phone
into the same jack, please use a splitter filter. If you are ONLY plugging your
Comtrend NexusLink 3120 into the jack no filter is needed.
Phone + DSL Splitter Filter
Line: Connect the short phone
cable to this port and connect the
other end to an active wall jack.
Phone: Connect a phone cord
from this port to your phone or
wireless phone’s base unit.
DSL: Connect a phone cord from
this port to the DSL port on your
Comtrend NexusLink 3120.
Comtrend NexusLink 3120 – Wireless Gateway

Comtrend NexusLink 3120 – Wireless Gateway 5
STEP 2
Power ON
Press the Power button to the OFF position (OUT). Connect the power adapter
to the power port. Attach the power adapter to a wall outlet or other AC
source. Press the Power button to the ON position (IN). If the Power LED
displays as expected (Red then Green) then the device is ready for setup.
Caution: If the device fails to power up, or it malfunctions, first verify that
the power cords are connected securely and then power it on again. If the
problem persists, contact the Nexicom Helpdesk at 1-888-639-4266.
4 Ethernet (LAN) Ports
Use 1000-BASE-T RJ-45 cables to connect up to four network devices to a
Gigabit LAN, or 10/100BASE-T RJ-45 cables for standard network usage.
USB Host Port (Type A)
This port can be used to connect the Comtrend NexusLink 3120 to a printer,
or supported USB device.

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STEP 3
Connecting Nexicom’s Wireless Gateway
1. Take the grey telephone cable that has come with the kit and plug it
into the grey port on the Comtrend NexusLink 3120 that reads DSL. Next,
connect the other end of the telephone cable into an available telephone
jack. (Note: Do not put a phone filter on the Comtrend NexusLink 3120 and
please use the supplied phone cable. Phone cables longer than 7’ can cause
problems and are not recommended.)
2. Connect the yellow Ethernet cable into the yellow port marked as Ethernet
Port 1 on the back of the Comtrend NexusLink 3120. Next take the other
end of the yellow Ethernet cable and plug it into the Ethernet port on the
back of your computer.
3. Take the black power cable and plug it into the port on the back of the
Comtrend NexusLink 3120 that says Power. Next take the other end of the
power cable and plug it into a power source such as a wall receptacle or
power bar. Press the Power button to the ON position (IN).
4. At this point you should start to see green lights on the front of the
Comtrend NexusLink 3120. Please proceed to the next page. (If you have no
lights, please see FAQ article #6 at the back of manual).
Power On/Off
Toggle Switch
DSL Port Ethernet LAN
Ports (x4)
USB Host Port
Power
Adapter Port

Comtrend NexusLink 3120 – Wireless Gateway 7
STEP 4
Check for DSL Link
When the Comtrend NexusLink 3120 is on and waiting for a connection, focus
on the following 2 lights:
Power: Should be Solid Green.
INTERNET: After about 30 – 90 seconds this light should come on and either
be Solid Green or Blinking Green.
If either of these lights fail to light up green please call the Nexicom Helpdesk
at 1-888-639-4266 for assistance.
If both the Power and the INTERNET light are green you should be able to surf
the Internet if you used a hard-wired connection from one of the 4 Ethernet
LAN ports. If you did not use a hard-wired connection and you wish to set-up
your devices through WiFi please proceed to step 5.
STEP 5
WiFi Set-up
The Comtrend NexusLink 3120 has dual band Wireless capabilities to provide
unprecedented WiFi coverage. The device also has 4 ports marked Eth 1
through Eth 4 for multiple wired connections.
The broadcast SSID name you will look for on your wireless capable devices will
be in the format of the word “Nexicom” then the 4 last digits of the MAC Address
of the Comtrend NexusLink 3120 and either 2.4GHz or 5GHz. It is recommended
to set up both frequencies for any given device, if it is capable, and let the device
choose the best signal depending on your location in the home.
Note: WiFi/WPS buttons are disabled on the 3120 for security reasons.
Your password for the Wireless Network will be on the Comtrend’s label
(located on the bottom of the device) and referred to as the WiFi Key.
To connect your Wireless Smart phone, Tablet or Media device do the following:
1. Navigate to the WiFi settings screen on your smart phone or tablet and
select the SSID (network) for your Comtrend NexusLink 3120, which will be
in the form of NEXICOM- (series of 4 numbers or letters) and either 2.4GHz
or 5GHz.
2. Enter the password into your device from the label on the bottom of your
Comtrend NexusLink 3120 referred to as the WiFi Key. The WiFi Password is
also located on the back of this guide.
3. Be sure to enter capital letters and lowercase appropriately as the
password is case-sensitive.

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LED Status Lights
The front panel LED lights are shown below and explained in the following table.
This information can be used to check the status of the device and its connections.
LED Colour Mode Function
POWER
GREEN On The device is powered up.
Off The device is powered down.
RED On
POST (Power On Self Test) failure or other malfunction. A malfunction
is any error of internal sequence or state that will prevent the device
from connecting to the DSLAM or passing customer data.
ETH WAN
GREEN
On WAN is connected at 1000 Mbps.
Off Ethernet WAN is not connected.
Blink In TX/RX over 1000 Mbps.
ORANGE
On Ethernet is connected at 10/100 Mbps.
Off Ethernet WAN is not connected.
Blink In TX/RX over 10/100 Mbps.
ETH 4 to 1
GREEN
On Ethernet is connected at 1000 Mbps.
Off Ethernet is not connected.
Blink In TX/RX over 1000 Mbps.
ORANGE
On Ethernet is connected at 10/100 Mbps.
Off Ethernet is not connected.
Blink In TX/RX over 10/100 Mbps.
WiFi 2.4G GREEN
On The wireless module is ready. (i.e. installed and enabled).
Off The wireless module is not ready. (i.e. either not installed or disabled).
Blink Data transmitting or receiving over WLAN.
WiFi 5G GREEN
On The wireless module is ready. (i.e. installed and enabled).
Off The wireless module is not ready. (i.e. either not installed or disabled).
Blink Data transmitting or receiving over WLAN.
DSL 1 GREEN
On DSL link is established.
Off The device is powered down.
Blink The DSL link is training or some traffic is passing through DSL.
DSL 2 GREEN
On DSL link is established.
Off The device is powered down.
Blink The DSL link is training or some traffic is passing through DSL.
INTERNET
GREEN
On
IP connected and no traffic detected. If an IP or PPPoE session is
dropped due to an idle timeout, the light will remain green if a DSL
connection is still present.
Off
Modem power off, modem in bridged mode or DSL connection not
present. In addition, if an IP or PPPoE session is dropped for any
reason, other than an idle timeout, the light is turned off.
Blink IP connected and IP traffic is passing through the device (either direction).
RED On
Device attempted to become IP connected and failed (no DHCP
response, no PPPoE response, PPPoE authentication failed, no IP
address from IPCP, etc.)

Comtrend NexusLink 3120 – Wireless Gateway 9
Frequently Asked Questions?
1. What is DSL?
• DSL stands for Digital Subscriber Line. DSL is a high speed Internet access
product for homes and businesses that uses existing copper telephone lines.
2. Can a DSL line be shared among multiple users?
• Yes, multiple computers can be connected through WiFi or by Ethernet cable
using one of the additional yellow ports on the back of the modem. This
is perfect for businesses that need to connect an entire office to one DSL
connection.
3. What are phone filters and what do they do?
• The phone filters are to be placed inline with all the phones in your home
(not on the modem) to prevent the digital signal from interfering with your
telephones as well as preventing the phones from interfering with your
high speed modem. These filters must be inline with all phones in the home
or business for the high speed modem to work correctly.
4. If I move can I take my equipment with me to my new house and have it work?
• Yes, first you must confirm with us if DSL service is available at your new
location. If so, you must inform us to transfer the service as there is
hardware that must be provisioned on the phone line at the new location
for the system to work. There is a charge for this service.
5. Should I have filters on all my phone lines?
• Only on phone jacks that are connected to a phone, fax machine or Audio
Visual equipment. The jack that has a line going into the modem should
NOT have a small single line filter, but you can use the larger DSL splitter
filter using the “DSL” port only for the modem.
6. My Modem has no lights!
• Verify that the power button at the back of the device is in the “ON”
position. Verify that the modem’s power source is plugged into a working
power outlet or power bar. Next, take the modem to another power source
and verify if you get the power light. For further assistance regarding this
error, please call the Nexicom Helpdesk.
7. The filter supplied does not fit with my wall mount phone. What do I do?”
• Don’t worry we have a solution. A wall mount filter can be obtained by
calling Nexicom, we will be happy to make arrangements to provide you
with one of these special filters.

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8. What should I do if I change my phone provider?
• Please contact Nexicom prior to making any changes as this will affect
your DSL service and could incur service charges.
9. What should I do if I cannot surf?
• Try turning off the power switch on the back of the Comtrend NexusLink
3120 and wait 30 seconds. Close your browser. Turn the power back on
and wait 4 minutes, open your browser and see if you can surf now.
10. Are the Wireless radios on by Default?
• Yes
11. Is the Wireless Security on by Default?
• Yes, the unit is set up with “WPA2” WiFi security. Login/Password
credentials are printed on the product label affixed to the bottom
of the device.
12. Why is my WiFi signal strength lower than I expected?
• A wireless signal degrades with distance, obstructions and sources of
WiFi noise. Common signal impairments include walls, ceilings, metal,
cinder blocks, fluorescent lights, microwaves, furniture or even a
close neighbour’s WiFi signal. The Comtrend NexusLink 3120 has been
optimized to provide wireless coverage for most situations however it is
best to try to locate it as close to your devices as possible, but this is only
practical if you have one main area where you tend to use your devices.
Otherwise, you should place your router near the center of your home.
Troubleshooting
If your Internet service stops working, do the following:
1. Use the On/Off switch on the back of the Comtrend NexusLink 3120 to turn
OFF the device.
2. Wait for 30 seconds and turn ON the Comtrend NexusLink 3120.
3. Wait for 4 minutes until both the DSL 1 and INTERNET LED lights are GREEN.
4. Test your Internet again.
If you have any questions during or after the setup process, please contact our
friendly Helpdesk staff.
They can be reached by phone at 705-775-6394 or 1-888-639-4266, or by email
at [email protected]. The Helpdesk is available Monday through Friday from
8 am to 10 pm, Saturdays from 8 am to 5 pm and Sundays from 9 am to 5 pm.

Comtrend NexusLink 3120 – Wireless Gateway 11

For General Information,
Visit Our Website at www.nexicom.net
To Contact Us for Technical Support
and General Inquiries:
On the Phone: [phone] or 1-888-639-4266
Monday–Friday, 8 am–10 pm,
Saturday 8 am–5 pm, Sunday 9 am–5 pm.
By Email: suppor[email protected]
Through our Knowledge Base: https://kb.nexicom.net
More than you expect