Motorola MT8733 User manual

DOCSIS 3.1 MODEM +
AX6000 ROUTER +
VOICE
quick start guide
MT8733

2
Power adapter
Velcro®cable organizer
Ethernet cable
Coax wrench
RJ11 telephone cable
PACKAGED WITH YOUR MT8733 DEVICE

3
MT8733 BUTTONS AND CONNECTORS
ETHERNET (LAN 1-4)
You can connect a computer, smart TV,
game station, or other Ethernet-capable
device to any of these 4 LAN ports. Note
that LAN4 is a 2.5GE port (2.5Gbps).
COAX
Connect an active coax
cable to the modem’s
COAX connector. Use
the wrench to tighten
the nut finger-tight:
Do not overtighten.
WPS button On top of unit
PHONE (TEL1 & TEL2)
If you have Xfinity phone service, you can
connect telephones to TEL1 or, if you have
two Xfinity phone numbers, to both TEL1
& TEL2.
POWER
Plug the supplied
power adapter
into an electrical
outlet and
connect to the
power jack.
RESET
If pressed for 20 seconds when modem is
ON, all settings will revert to factory defaults.

4
LET’S GET STARTED
1. Turn o and disconnect any existing modems or routers on your network.
2. Connect coax cable that has active cable service to the modem’s
COAX connector. Ensure that you have access to the bottom label
during setup and activation of the modem.
3. Plug the MT8733 into a power outlet using the power adapter and
turn on the power button on the back of the device.
4. Wait for the online light ( for 3.0, or for 3.1) to stop flashing
and remain on for at least 1 minute. This process may take up to 15
minutes and the modem may reboot multiple times.
Note: You may use a coax splitter to share the cable connectivity with your
TV. Use a two-way splitter with a top frequency of 1,000 MHz or higher.
Please note this may reduce the device’s performance.
ACTIVATE WITH XFINITY
1. Activate your modem by following Xfinity’s activation process.
You can find information on this process on their website
xfinity.com/activate.
2. Connect your computer or mobile device to your MT8733 using one
of the following methods:
• Connect via WiFi using the SSID and password on the bottom of
the modem.
• Connect via one of the Ethernet ports found on the back of the
modem.
3. Confirm that your MT8733 is connected to the internet by visiting a
website. If you are unable to access a website, see Troubleshooting Tips.
4. Download motosync and set up your WiFi. See next page >

5
SET UP YOUR WIFI
WITH MOTOSYNC
Now that you have activated your
modem, download motosync to set up
your WiFi network. This app provides
settings, parental controls, monitoring,
and security.
1. Download the motosync app by
visiting motorolanetwork.com/sync
on your mobile phone.
2. Open the app and create your user
account (or login).
3. Follow the instructions to connect
your MT8733 to your motosync
account. Note: you will need access
to the QR code on the bottom of
the MT8733 device (not box).
Note: Alternatively, you can adjust
your WiFi and device settings using
the Motorola web interface. To
access, open a web browser and
enter 192.168.0.1 in the address field
then follow the prompts. However,
motosync is recommended for
additional features.

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FOR XFINITY PHONE SERVICE
To use Xfinity Voice service with this device:
1. Ensure you have subscribed to Xfinity Voice. This service may be
provisioned on one line, TEL1, or both TEL1 and TEL2.
2. Check that the MT8733 device’s TEL1 light is ON.
3. Plug a phone into the TEL1 port, and then take the phone o-hook
to confirm that there is a dial tone. Verify your phone is working by
making and receiving a call.
If you have internet connectivity but no voice service, contact Xfinity for
support.
An optional battery backup system (sold separately) is available for the
MT8733, which will allow uninterrupted phone service on TEL1 when AC
power is lost. For more information, visit motorolanetwork.com/MT8733.

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FRONT PANEL LIGHTS
During power up, the lights will blink for about a minute.
Light Color Description
Power Green ON: OFF:
Power on
Power o, or on battery power
Downstream Green or Blue
Green blinking:
Green ON:
Blue blinking:
Blue ON:
OFF:
Scanning for channel
Connected on 1 channel
Negotiating multiple channels
Connected on multiple channels
On battery power
Upstream Green or Blue
Green blinking:
Green ON:
Blue blinking:
Blue ON:
OFF:
Connecting to 1 channel
Connected on 1 channel
Negotiating multiple channels†
Connected on multiple channels
Not connected, or on battery power
Online Green or Blue
Green Blinking:
Green ON:
Blue ON:
OFF:
Establishing internet connection
DOCSIS 3.0 connection established
DOCSIS 3.1 connection established
Oine or on battery power
Battery Backup Green ON:
OFF:
AC power fail / battery power active
Unit running on AC power
TEL1 & TEL2 Green
Blinking
ON:
OFF:
Establishing voice service or phone o hook
/ Call active
Phone on-hook / Ready for calls
Phone service not provisioned
2.4 & 5 GHz
WLAN Green
Blinking
ON
OFF:
Data is flowing.
WiFi is enabled
WiFi is not enabled or on battery power
† If a blue light blinks continuously, this indicates partial service, which means that at least one designated channel
has not completed bonding. You should still get high internet speeds, but Xfinity may want to know so they can
adjust their network.
Note: The TEL2 LED will only light if voice service is provisioned for a
second phone line. TEL2 does not work if AC power is lost.

8
TROUBLESHOOTING TIPS
For more detailed troubleshooting information please use the motosync
app or visit motorolanetwork.com/support.
What if I can’t connect to the internet?
• Turn the modem o for at least 10 seconds, then on, to see if that
fixes the problem.
• Check that the device is connected to Power and has a snug
connection to coax.
• Check that the device’s Power LED turns ON. Is the power adapter
plugged into a live outlet? Is the power button (on the rear of the
device) turned ON?
• Contact your cable service provider to make sure they’ve turned on
your internet service.
• If you’re using a splitter with your MT8733, try the MT8733 without
the splitter to see if that helps. If it does, you may need to get a
splitter with a top frequency of at least 1,000 MHz.

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What if I am connected wirelessly, but my connection seems slow
or keeps dropping?
• Place the MT8733 in a central location for the best wireless coverage
throughout your home or oce.
• Try to avoid interference by keeping the MT8733 away from large
electronics and cordless phones.
• Use the motosync app to change the wireless channel to reduce
interference with neighbors’ wireless networks.
• If you need greater wireless range far away from your MT8733,
consider adding a mesh WiFi system. Or if you have coaxial cable
connections in other rooms, you can connect a MoCA adapter. For
these options, visit motorola.com/us/modems-routers.
• Check your motosync app to view each device’s WiFi signal strength
and to run internet speed tests. If your speed is significantly slower
than your internet plan, contact your provider.

10
What if I don’t remember my MT8733’s Wireless Network Name/
SSID or Security Key/Password?
• You can access and change your SSID and Password in the motosync app.
• Alternately, you can reset the device to factory defaults by pressing
the Reset button for 10 seconds using a paperclip; then, refer to the
default values on the bottom label of your MT8733.
What if I can’t make or receive phone calls?
• Make sure that you have ordered Xfinity phone service.
• Make sure that the TEL1 light is ON (lit solidly). It may take several
minutes after power-up before voice service is established. Note also
that it may take several days to activate voice service for the first time.
• If the TEL1 light never turns on, turn your MT8733 o for at least 8
seconds, then on. Wait up to 20 minutes to see if that fixes the problem.
• If the TEL1 light still isn’t ON, contact Xfinity.