NETGEAR Nighthawk CM2050V User manual

Quick Start
2.5 Gbps Ultra-High Speed
Cable Telephony Modem
Model CM2050V
Package contents
Cable modem
Ethernet
cable
Power
adapter
BEFORE RETURNING THIS PRODUCT TO THE STORE
FOR ANY REASON, call NETGEAR Technical Support at
1-866-534-9377 or visit
https://kb.netgear.com/000061156/How-can-I-troubleshoot-my-cable-modem.
Cable modem LEDs
LED Description
Power • Solid white. The cable modem is receiving power and is functioning
normally.
• Off. The cable modem is not receiving power.
• Solid red. The cable modem is too warm and might overheat.
Downstream • Solid amber. One downstream channel is locked.
• Solid white. Two or more downstream channels are locked.
• Blinking white. The cable modem is scanning for a downstream channel.
• Off. No downstream channel is locked.
Upstream • Solid amber. One upstream channel is locked.
• Solid white. Two or more upstream channels are locked.
• Blinking white. The cable modem is scanning for a upstream channel.
• Off. No upstream channel is locked.
Online • Solid white. The cable modem is online.
• Blinking white. The cable modem is synchronizing with the cable
provider’s cable modem termination system (CMTS).
• Off. The cable modem is ofine.
Multi-Gig
Ethernet
The LED color indicates the speed: blue for a 2.5 Gbps Ethernet
connection, white for a 1 Gbps Ethernet connection, and amber for a
100 Mbps Ethernet connection.
• Solid. A powered-on device is connected to the port.
• Blinking. The port is sending or receiving trafc.
• Off. No device is connected to this port.
Tel 1 and Tel 2 • Solid white. The Tel 1 or 2 port is online.
• Blinking white. The Tel 1 or 2 port is processing a call or the phone is off-
hook.
• Off. The Tel 1 or 2 port is not in use.
© NETGEAR, Inc., NETGEAR and the NETGEAR Logo are trademarks of NETGEAR, Inc. Any
non-NETGEAR trademarks are used for reference purposes only.
Thank you for purchasing this NETGEAR product. You can visit
https://www.netgear.com/support to register your product, get help, access the
latest downloads and user manuals, and join our community. We recommend that
you use only ofcial NETGEAR support resources.
For regulatory compliance information, visit
https://www.netgear.com/about/regulatory/.
See the regulatory compliance document before connecting the power supply.
Some cable devices might not be compatible with certain cable networks. Check
with your cable Internet provider to conrm that this NETGEAR cable modem
router is allowed on your cable network.
If you are experiencing trouble installing your cable modem, contact NETGEAR at
1-866-874-8924.
Support
Phone
cable
Note to CATV system Installer- This reminder is provided to call the CATV systems
installer’s attention to Section 820-93 of the National Electrical Code, which
provides guidelines for proper grounding and in particular, species that coaxial
cable shield shall be connected to the grounding system of the building, as close
to the point of cable entry as practical.

1. Turn off and disconnect existing modems and routers.
If you are replacing a modem that is currently connected in your home,
unplug the modem and plug the new cable modem into the same outlet.
2. Use a coaxial cable to connect the cable port on the cable modem to a cable
wall outlet.
Make sure that the cable is tightly connected. We recommend that you
connect your cable modem directly to a cable wall outlet.
If you must share the connection, use a 3.5dB (1 to 2) splitter.
3. If you have Xnity Voice, connect your phone to the Tel 1 port
on the cable modem with the phone cable.
If you subscribed to two phone lines, connect the other phone to the Tel 2
port.
Note: The Tel 2 port only works for a two-phone line subscription.
4. Connect the power adapter to the cable modem and plug the power adapter
into an electrical outlet.
Coaxial cable
Start here
The cable modem might reset multiple times when it is powered on.
5. Wait for the Online LED to light solid white.
This process might take up to 10 minutes. When the cable modem comes
online, the Online LED stops blinking and lights solid white.
After 10 minutes, if the Online LED doesn’t light solid, make sure that the
cable outlet is working or call your Internet service provider (ISP) to make sure
you have service.
Note: When the Online LED lights solid, your cable modem is not connected
to the Internet yet. You must connect a router or computer to your cable
modem and then activate your cable modem with your cable Internet
provider.
6. Connect a router to your cable modem.
a. Connect the Ethernet port on the cable modem to the WAN or Internet
port on the router
b. Power on the router.
c. Connect your computer or mobile device to the router.
7. Collect this information about your Internet service and the cable modem:
• Your Xnity account number and the personal information associated with
your Xnity account (you need one of the following):
- Mobile phone number
- Xnity user name and password
• The following information from the cable modem label:
- Model number, which is CM2050V
- Serial number
90° 90°
WiFi router
Cable modem
NETGEAR, Inc.
350 East Plumeria Drive
San Jose, CA 95134, USA
NETGEAR INTERNATIONAL LTD
Floor 1, Building 3
University Technology Centre
Curraheen Road, Cork,
T12EF21, Ireland
April 2020
- MAC address
- MTA MAC address
8. Activate your Internet service:
a. Close all web browsers.
b. Launch a web browser.
You are redirected to the Xnity self-activation page. If you are not
redirected to the Xnity self-activation page, visit xnity.com/activate.
c. Provide your Xnity credentials and complete the self-activation process.
This process might take up to 10 minutes, during which the cable modem
reboots twice.
If you’re unable to activate your Xnity Internet service using the self-activation
page, call Xnity customer service at 1-800-XFINITY (1-800-934-6489).
Optional
phone