User Manual Nighthawk® 2.5 Gbps Ultra-High Speed Cable Telephony Modem for Xfinity® Internet & Voice Model CM2050V May 2020 202-12066-01 NETGEAR, Inc. 350 E.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Support 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 official NETGEAR support resources. Contact your Internet service provider for technical support. Trademarks ©NETGEAR, Inc. NETGEAR and the NETGEAR Logo are trademarks of NETGEAR, Inc.
Contents Chapter 1 Hardware Setup Front Panel and LEDs...........................................................................6 Rear Panel..............................................................................................9 Label.....................................................................................................10 System Requirements........................................................................10 Install and Activate Your Cable Modem..................................
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Chapter 5 Supplemental Information Factory Settings..................................................................................31 Technical Specifications.....................................................................
1 Hardware Setup This chapter covers the following topics: • • • • • Front Panel and LEDs Rear Panel Label System Requirements Install and Activate Your Cable Modem For more information about the topics covered in this manual, visit the support website at support.netgear.com. Note: An uninterruptible power supply (UPS) can be purchased separately for continued service during power outages. For a list of supported UPS models, visit netgear.com/support/product/CM2050V.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Front Panel and LEDs The cable modem provides status LEDs on the front. Figure 1. Front panel You can use the LEDs to verify status and connections. The following table lists and describes each LED on the cable modem.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Table 1. LED descriptions LED Icon Power Description • Solid white. Power is supplied to the cable modem. • Off. No power is supplied to the cable modem. • Solid red. The cable modem is too warm and might overheat. For more information about this condition, see Use the LEDs to Troubleshoot on page 26. Downstream • Solid amber. One downstream channel is locked. • Solid white. Two or more downstream channels are locked. • Blinking white.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Table 1. LED descriptions (Continued) • 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.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Rear Panel The connections and button on the rear panel are shown in the following figure. Figure 2.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Viewed from top to bottom, the back panel contains the following components: • Reset button. Pressing the Reset button resets your cable modem. If the Reset button is pressed for at least seven seconds, the Power LED blinks white and your cable modem returns to its factory settings. • Ethernet port. For installation and activation, connect a computer to the Ethernet port.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem • • - Windows Vista - Windows XP - Windows 2000 - Mac OS - Other operating systems running a TCP/IP network Compatible web browser: - Microsoft Internet Explorer 5.0 or later - Firefox 2.0 or later - Safari 1.4 or later - Google Chrome 11.0 or later Xfinity cable broadband Internet service Note: An uninterruptible power supply (UPS) can be purchased separately for continued service during power outages.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Make sure that the cable is tightly connected. 4. (Optional) Connect a phone. Connect your phone to the Tel 1 port on the rear panel of the cable modem using the phone cable. Note: The Tel 2 port works only for a two-phone-line subscription. 5. Connect the power adapter. Connect the power adapter to your cable modem and plug the power adapter into an electrical outlet. When the startup is complete, the Power LED lights white. 6.
Nighthawk CM2050V 2.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Connect Your Cable Modem to a Router After Installation and Activation After you install the cable modem and activate your Internet service, you can disconnect the computer and connect a router to the cable modem. To connect your cable modem to a router after installation and activation: 1. Reboot your cable modem by unplugging the power cable from the cable modem and plugging it back in.
2 Monitor Voice Telephone Lines This chapter includes the following sections: • • • View Voice Status View the MTA Call List View the EMTA Event Log 15
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem View Voice Status The cable modem functions as a multimedia terminal adaptor (MTA), allowing the cable modem to provide voice services. You can view some basic MTA voice information. To view the MTA voice status: 1. Launch a web browser from a computer that is connected to your cable modem. 2. Enter http://192.168.100.1. A login window opens. 3. Enter the admin user name and password. The user name is admin.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem The user name is admin. The default password is printed on the product label. The user name and password are case-sensitive. The BASIC Home page displays. 4. Select MTA Call List. The MTA Call List page displays. 5. To see the most recent entries, click the Refresh button. View the EMTA Event Log You can view the embedded multimedia terminal adapter (EMTA) event log for your cable modem. To view the EMTA event log: 1.
3 Manage Your Network After you set up the cable modem, you do not need to log in to the cable modem for normal operation. However, you can log in to the cable modem to change a very limited number of settings and monitor the cable modem.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Log in to the cable modem To log in to the cable modem: 1. Connect a computer to your cable modem. You can connect a computer to your cable modem using the following methods: • Connect a computer to your cable modem using an Ethernet connection. • Connect a WiFi router to your cable modem using an Ethernet connection, and then connect a computer to your router using a WiFi or Ethernet connection. 2. Launch a web browser. 3.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem 4. Select ADVANCED > Administration > Set Password. The Set Password page displays. 5. Type the old password, and type the new password twice. 6. Click the Apply button. Your settings are saved. View cable modem initialization You can track the initialization procedure of the cable modem and get details about the downstream and upstream cable channel. The time is displayed after the cable modem is initialized.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem View cable modem status To view cable modem status and usage information: 1. Launch a web browser from a computer that is connected to your cable modem. 2. Enter http://192.168.100.1. A login window opens. 3. Enter the admin user name and password. The user name is admin. The default password is printed on the product label. The user name and password are case-sensitive. The BASIC Home page displays. 4. Click the ADVANCED tab.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Specify the cable connection starting frequency The starting frequency is automatically generated. For most Internet connections, you do not need to specify this information. If you must enter a starting frequency, contact your Internet provider. To change the starting frequency: 1. Launch a web browser from a computer that is connected to your cable modem. 2. Enter http://192.168.100.1. A login window opens. 3.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem 3. Enter the admin user name and password. The user name is admin. The default password is printed on the product label. The user name and password are case-sensitive. The BASIC Home page displays. 4. Click the ADVANCED tab. The ADVANCED Home page displays. 5. Click the Reboot button. A confirmation message displays. 6. Click the OK button. The cable modem reboots.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Use the reset button on the back panel CAUTION: This process erases all settings that you configured in the cable modem. To reset the cable modem to factory default settings using the Reset button: 1. On the back of the cable modem, locate the Reset button. 2. Using a straightened paper clip, press and hold the Reset button until the cable modem reboots itself. The configuration is reset to factory default settings.
4 Troubleshooting This chapter provides information about troubleshooting your cable modem.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Use the LEDs to Troubleshoot The following table provides help when you are using your cable modem's LEDs for troubleshooting.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Table 2. Troubleshooting your cable modem's LEDs LED Behavior Action All LEDs are off when the cable modem is plugged in. • Make sure that the power cord is securely connected to your cable modem and that the power supply adapter is securely connected to a functioning power outlet. • Make sure that you are using the 12 VDC, 2.5A power adapter from NETGEAR for this product. • If the error persists, a hardware problem occurred.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Cannot log in to the cable modem If you cannot access your cable modem from a computer that is connected to your cable modem or to a router that is connected your cable modem, check the following: • If your computer is connected to your cable modem with an Ethernet cable, check the connection. • Make sure that Java, JavaScript, or ActiveX is enabled in your browser.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Table 3. Quick tips for troubleshooting voice connectivity Problem Possible Solution No dial tone • If you use a cordless phone, check that the base of your phone is turned on and receiving power and that the cordless phone battery is not low. • Check that the phone cable connections are secure at the cable modem and at base of your phone, and that the cable modem is turned on and receiving power.
5 Supplemental Information This appendix covers the following topics: • • Factory Settings Technical Specifications 30
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Factory Settings The following table shows the factory default settings for the cable modem. Table 4. Factory default settings Feature Cable modem login Internet connection Default Setting User login URL http://192.168.100.1.
Nighthawk CM2050V 2.5 Gbps Ultra-High Speed Cable Telephony Modem Table 5. Technical specifications Feature Specification Power adapter • Input: 110–120V, 47–60 Hz • Output: 12 VDC, 2.5A Physical specifications • Dimensions (W x D x H): 6.8 x 3.7 x 8.2 in. (172 x 94 x 208 mm) • Weight: 1.09 lb (493 g) Environmental • Operating temperature: 32° to 104°F (0° to 40°C) • Operating humidity: 90% maximum relative humidity, noncondensing Interface • Local: One 2.
Quick Start 2.5 Gbps Ultra-High Speed Cable Telephony Modem Model CM2050V Package contents Cable modem Phone cable 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.
Start here 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. Coaxial cable Optional phone 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.
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.
- MAC address - MTA MAC address 8. Activate your Internet service: a. Close all web browsers. b. Launch a web browser.
Support 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 \RX XVH RQO\ RIŴFLDO 1(7*($5 VXSSRUW UHVRXUFHV 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.
Cable modem LEDs LED Power Description • • • 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.
Data Sheet | CM2050V 2.5Gbps Internet Speed Cable Modem for XFINITY® Voice 2 PHONE LINES Overview Experience a new generation of of today and tomorrow. DOCSIS® monthly cable modem rental fees†. cable modems that deliver up to 3.1 delivers the world’s fastest cable CM2050V includes two telephones 2.5Gbps multi-Gigabit Internet Internet with speeds that are 10 ports that automatically prioritize speed, so you can be ready for the times faster than DOCSIS® 3.0.
Data Sheet | CM2050V 2.5Gbps Internet Speed Cable Modem for XFINITY® Voice Built for XFINITY® from Comcast Internet with Voice • Two (2) telephone ports that automatically prioritize voice over internet for the best call clarity • Enhanced call features include 3-way conference calling, caller ID, call forwarding and more • Delivers up to 2.5Gbps ultra high speed Internet connections • DOCSIS® 3.1 is up to 10X faster than the DOCSIS® 3.0 standard • Built for Gigabit + 2.
Data Sheet | CM2050V 2.5Gbps Internet Speed Cable Modem for XFINITY® Voice Cable Internet Connection OR AND CM2050V Cable Modem Desktop or Laptop Computer Two Telephone Lines OR Wireless Router Required for WiFi connections. (Sold separately) Connect the CM2050V Cable Modem directly to your computer or your WiFi router for connecting to wireless devices. Why DOCSIS® 3.1 • More Speed—up to 6Gbps downstream and 1.
Data Sheet | CM2050V 2.5Gbps Internet Speed Cable Modem for XFINITY® Voice Cable Telephony Modems Designed for Today’s Internet Plan and Future Upgrades NETGEAR MODEM CM2050V Modem CM1150V Modem CM500V CABLE MODEM TECHNOLOGY DOCSIS® 3.1 DOCSIS® 3.1 DOCSIS® 3.0 16x4 SUPPORTED SPEED TIERS Multi-Gig 2.5Gbps Multi-Gig 1Gbps+ Up to 300Mbps Connection Diagram 2.
Data Sheet | CM2050V 2.5Gbps Internet Speed Cable Modem for XFINITY® Voice Package Contents Technical Specifications Support • Nighthawk® 2.5Gbps Internet Speed Cable Modem (CM2050V) • Simple—CD-less installation • Join the NETGEAR Community Forum. Visit http://community.netgear.
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203-1 1945-03 © NETGEAR, Inc., NETGEAR and the NETGEAR Logo are trademarks of NETGEAR, Inc. Any non-NETGEAR trademarks are used for reference purposes only.
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