User Guide
TC-7620
DOCSIS 3.0 High Speed Cable Modem
REV1.0.11910011521
COPYRIGHT & TRADEMARKS
Specifications are subject to change without notice. 
is a registered trademarkof TP-LINK TECHNOLOGIES CO., LTD. Other brands and product names are trademarks or registered trademarks of their respective holders.
No part of the specifications may be reproduced in any form or by any means or used to make any derivative such as translation, transformation, or adaptation without permission from TP-LINK TECHNOLOGIES CO., LTD. Copyright © 2016 TP-LINK TECHNOLOGIES CO., LTD. All rights reserved.
Explanation of the symbols on the product label
Symbol Explanation
DC voltage
RECYCLING
This product bears the selective sorting symbol for Waste electrical and electronic equipment (WEEE). This means that this product must be handled pursuant to European directive 2012/19/EU in order to be recycled or dismantled to minimize its impact on the environment.
User has the choice to give his product to a competent recycling organization or to the retailer when he buys a new electrical or electronic equipment.
CONTENTS
Package Contents …………………………………………………………………….. 1Chapter 1. Introduction ……………………………………………………………. 21.1 Product Overview …………………………………………………………………. 21.2 Main Features ………………………………………………………………………… 21.3 Conventions …………………………………………………………………………….2Chapter 2. Hardware Installation ……………………………………………… 32.1 Front Panel………………………………………………………………………………. 32.2 Back Panel ………………………………………………………………………………. 42.3 Installation Environment ………………………………………………………… 4Chapter 3. Quick Start ………………………………………………………………… 63.1 System Requirements ………………………………………………………………… 63.2 Connecting the Hardware…………………………………………………………… 63.3 Activating the Cable Modem………………………………………………………. 7Chapter 4. Software Configuration………………………………………………. 84.1 TCP/IP Configuration………………………………………………………………. 84.2 Login ………………………………………………………………………………………….. 94.3 Basic ……………………………………………………………………………………………. 94.3.1 Device Information …………………………………………………………………. 104.3.2 Network Information ………………………………………………………………. 104.4 Advanced …………………………………………………………………………………….. 114.4.1 Connection Status …………………………………………………………………….. 114.4.2 Account Management ……………………………………………………………….. 144.4.3 System Log …………………………………………………………………………………. 154.5 Logout and Reboot………………………………………………………………………… 15Appendix A: Specifications………………………………………………………………. 16Appendix B: Troubleshooting…………………………………………………………… 18Appendix C: Configure the PC………………………………………………………….. 20
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
Package Contents
The following items should be found in your package:
One cable modem
One power adapter for the cable modem
One RJ45 cable
One Quick Installation Guide
One Information Card
Note:
Make sure that the package contains the above items. If any of the listed items are damaged or missing, please contact with your distributor.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
Chapter 1. Introduction
Thank you for choosing the TC-7620 DOCSIS 3.0 High Speed Cable Modem.
1.1 Product Overview
TP-LINK’s TC-7620 DOCSIS 3.0 High Speed Cable Modem is designed for delivers ultra-high speed data through coax used in HFC networks. It’s an incredibly robust device allowing users to access Internet with over 600 Mbps downstream data rates, 120 Mbps upstream data rates and share it with a Gigabit Ethernet port.
This modem complies with DOCSIS 3.0, supports channel bonding of up to 16 downstream channels and 4 upstream, combined with Enhanced security of AES encryption, IPv4 and IPv6 dual stack, make it future-Proof.
1.2 Main Features
Complies with DOCSIS 3.0 and backwards compatible to DOCSIS 1.0, 1.1 and 2.0 provides users comprehensive network compatibility
Channel bonding of up to 16 downstream channels and 4 upstream channels provide data rates over 600 Mbps for downstream, and 120 Mbps for upstream
IPv4 and IPv6 dual stack make it future-Proof
Gigabit port ensure ultimate fast transfer speeds
Remotely configurable and monitorable using SNMP and TFTP
Well-defined LEDs clearly display device and network status
Quick and hassle free installation
1.3 Conventions
The modem or device mentioned in this User Guide stands for TC-7620 without any explanations. Parameters provided in the pictures are just references for setting up the product, which may differ from the actual situation.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
Chapter 2. Hardware Installation
2.1 Front Panel
The modem’s LEDs are located on the side panel (View from top to bottom). They indicate the device’s working status. For details, please refer to LEDs Explanation.
LEDs Explanation:
Name Status Indication
Off The modem is powered off.
(Power) On The modem is powered on.
Off The initialization is not started, or has failed.(Downstream) White The modem is synchronized with one channel.Green The modem is synchronized with more than one channel.Flashing The modem is scanning for downstream channels.
Off The initialization is not started, or has failed.
(Upstream) White The modem is synchronized with one channel.
Green The modem is synchronized with more than one channel.Flashing The modem is scanning for upstream channels.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
Name Status Indication
Off Internet service is not available.
(Internet) On Internet service is available.
Flashing The modem is initializing.
On The LAN port is connected.
(LAN) Off The LAN port is not connected.
Flashing The LAN port is sending or receiving data.
2.2 Back Panel
Reset: With the modem powered on, use a pin to press and hold the Reset button until all LEDs turn on momentarily. And the modem will be reset to its factory default settings.
LAN: Through this port, you can connect the modem to your PC or the other Ethernetnetwork device.
Cable: Through this port, you can connect the modem to coaxial cable.
Power: The power plug where you will connect the power adapter.
2.3 Installation Environment
The product should not be located where it will be exposed to moisture or excessive heat.
Place the modem in a location where it can be connected to the various devices as well as to a power source.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
Make sure the cables and power cord are placed safely out of the way so they do not create atripping hazard.
The modem can be placed on a shelf or desktop.
Keep away from the strong electromagnetic radiation and the device of electromagneticsensitive.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
Chapter 3. Quick Start
3.1 System Requirements
Broadband Internet Access Service (Cable). PCs with a working Ethernet Adapter and an Ethernet cable with RJ45 connectors. TCP/IP protocol on each PC. Web browser, such as Microsoft Internet Explorer, Mozilla Firefox or Apple Safari.
3.2 Connecting the Hardware
Before installing the device, please make sure your broadband cable service provided by your ISPis available. If there is any problem, please contact your ISP. Before cable connection, cut off thepower supply and keep your hands dry. You can follow the steps below to install it.
1. Connect the coaxial cable to the modem.2. Connect the power adapter to the modem.3. Connect your computer to the modem using an Ethernet cable.4. Wait until the Internet LED turns solid on. The modem has synchronized with your ISP’sserver.
Note:1. If the Internet LED is blinking or off after about 1 minute, call your ISP’s customer service.2. The product should be connected to cable distribution system that grounded (earthed) inaccordance with ANSI/NFPA 70, the National Electrical Code (NEC), in particular Section820.93 – Grounding of Outer Conductive Shield of a Coaxial Cable.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
3.3 Activating the Cable Modem
1. Get your Internet service account information and the modem’s Information Card ready.
2. Make sure your computer is set to dynamically obtain an IP address.3. Launch a web browser, and visit any website. You will be automatically redirected to yourISP’s self-activation page.
If the self-activation page does not show up, call your ISP’s customer service.
For Comcast and Time Warner Cable (TWC):Comcast Xfinity 1-800-934-6489 www.comcast.comTime Warner Cable 1-855-704-4503 www.timewarnercable.com
The contact information listed might change. You can also find the contact number in yourmonthly Internet service billing statement.
4. Follow the on-screen instructions to activate the modem, and wait for about 10 minutes till the LEDs become solid on.5. Now you can use your computer to surf the Internet.
If you want to share the Internet access, connect a router to the modem instead. You need toreboot the modem to get the router connected to the Internet.Note:1. If the Internet is not accessible, contact your ISP and make sure that the modem is activated.2. For advanced configuration, log into the modem’s web interface at http://192.168.100.1, andenter admin (all lowercase) for both username and password when prompted.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
Chapter 4. Software Configuration
This User Guide recommends using the Quick Installation Guide for first-time installation. If you want to know more about this device, maybe you will get help from this chapter to configure the advanced settings through the Web-based Utility.
4.1 TCP/IP Configuration
The default IP address of the modem is 192.168.100.1. And the default subnet mask is255.255.255.0. We use all the default values for description.
Connect the local PC to the LAN port of the modem. And then you can configure your PC in the following way.
1) Set up the TCP/IP Protocol in “Obtain an IP address automatically” mode on your PC. Ifyou need instructions as to how to do this, please refer to Appendix C: Configure the PC.2) Then the built-in DHCP server will assign IP address for the PC.
Now, you can run the Ping command in the command prompt to verify the network connection.Please click the Start menu on your desktop, select run tab, type cmd or command in the fieldand press Enter. Type ping 192.168.100.1 on the next screen, and then press Enter.
If the result displayed is similar to the screen below, the connection between your PC and themodem has been established.
If the result displayed is similar to the screen shown below, it means that your PC has not connected to the modem.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
You can check it following the steps below:
1) Is the connection between your PC and the modem correct?The LAN LED on the modem and the LED on your PC’s adapter should be lit.2) Is the TCP/IP configuration for your PC correct?Make sure the computer connected to the modem is set to dynamically obtain an IP address.
4.2 Login
To access the configuration utility, open a web-browser and type the default address 192.168.100.1 in the address field of the browser.
After a moment, a login window will appear. Enter admin for the Username and Password, both in lower case letters. Then click the Login button or press the Enter key.
4.3 Basic
Under the Basic menu, you can see the system information, including the device information and network information.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
4.3.1 Device Information
Choose menu “Basic > Device Information”, you can view the device information.
4.3.2 Network Information
Choose menu “Basic > Network Information”, you can view the network information.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
4.4 Advanced
Under the Advanced menu, you can see the system tools, including the connection status, account management, and system log.
4.4.1 Connection Status
Choose menu “Advanced > Connection Status”, you can view the information of startupprocedure, downstream bonded channels, upstream bonded channels, and time information.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
4.4.2 Account Management
Choose menu “Advanced > Account Management”, you can see the screen below. Here youcan set a new login password for the modem’s web-based management page.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
4.4.3 System Log
Choose menu “Advanced > System Log”, you can view and clear the logs of the modem.
4.5 Logout and Reboot
Click the Logout icon 
to log out of the web management page.Click the Reboot icon 
to reboot the modem.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
Appendix A: Specifications
Product Description DOCSIS 3.0 High Speed Cable Modem
Physical Specifications
Interface 1 F-Connector (female 75 Ω)1 10/100/1000 Mbps Ethernet Interface (RJ45)1 Power Jack
Button 1 Reset Button
DOCSIS Features
Standards DOCSIS 3.0Capture Bandwidth Full Band Capture windowsMoCA Reject Filter Internal MoCA Reject Filter
Downstream
Channel Bonding Up to 16Modulation 64 or 256 QAM
Maximum Data Rate DOCSIS Up to 686 MbpsBandwidth DOCSIS 96 MHz(16 channels) / 6MHz (single channel)Symbol Rate DOCSIS 64 QAM 5.057 Msym/s; 256 QAM 5.361 Msym/s
Operating Level Range –15 to 15 dBmVBonded Channel RF Input Impedance 75 ΩFrequency Range DOCSIS 88 to 1002 MHz (edge to edge)Frequency Plan DOCSIS Annex BSecurity DOCSIS 3.0 Security (BPI+, EAE, SSD)
Upstream
Channel Bonding Up to 4Modulation QPSK and 8, 16, 32, 64, 128 QAM, optional 256 QAMMaximum Data Rate DOCSIS Up to 131.072 MbpsChannel Width 200 kHz, 400 kHz, 800 kHz, 1.6 MHz,3.2 MHz, 6.4 MHzSymbol Rate 160, 320, 640, 1280, 2560, 5120 ksym/s
Level range TDMA Pmin to +57 dBmV (32 QAM, 64 QAM)Pmin to +58 dBmV (8 QAM, 16 QAM)Pmin to +61 dBmV (QPSK)
Note: A – TDMA max output power reduced 3dB when transmitting two channels and 6dB when transmitting 3 or 4 channels
S-CDMA Pmin to +56 dBmV (all modulations), where:Pmin=+17 dBmV, 1280 kHz modulation ratePmin=+20 dBmV, 2560 kHz modulation ratePmin=+23 dBmV, 5120 kHz modulation rate
Note: S-CDMA max output reduced 3dB when transmitting 2 or more channels
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
Output Impedance 75 ΩFrequency Range DOCSIS 5-42 MHz (edge to edge),
Network Function
IP Stack Supports IPv4 and IPv6 dual stackDHCP DHCP ClientVPN Passthrough PPTP, L2TP, IPSecMulticast Support IGMP v1/v2/v3Flow Control 802.3x flow control at the UNI
Management and Maintance
Managed by Web, and SNMP, and TFTPReset to Factory default by Reset buttonReal-time statistics、System Log
Others
Safety, Emission and others FCC, ULCablelabsRoHS compliant
Protocol Support Network: IP, ICMP, ARPTransport: TCP, UDPApplication: SNMP (v1, 2c and 3), TFTP,DHCP, ToD
Power Input 12VDC/1A
Environment OperatingTemperature 32 °F to 104 °F (0 °C to 40 °C)StorageTemperature –22 °F to 158 °F (–30 °C to 70 °C)OperatingHumidity 5 to 95% R.H. (non-condensingStorage Humidity 5%~95% non-condensing
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
Appendix B: Troubleshooting
T1. What can I do if I cannot access the Internet?
1) Make sure that all cables are connected properly and securely to the modem.2) Contact your ISP to verify the modem is activated. If the modem is not activated, your ISP will activate it for you.3) Make sure that your computer is set to obtain an IP address automatically.4) Power cycle the modem by unplugging the power adapter from the electrical outlet and plugging it back in.5) Reset the modem. Please refer to T4 for instruction.6) Contact our Technical Support if the problem persists.
T2. What can I do if the login page of the modem’s web interface does not appear?
1) Check if the computer is set to a static for fixed IP address. If so, change the setting to obtainan IP address automatically.2) Make sure http://192.168.100.1 is correctly entered in the web browser.3) Use another web browser.4) Unplug and reconnect both ends of the Ethernet cable.
T3. How can I reset the password to the modem’s web interface?
If you have changed the password and have forgotten it, refer to T4 to reset the modem. This will reset the password back to admin.
T4. How do I restore the modem to its factory default settings?
With the modem powered on, press and hold the Reset button on the rear panel until all LEDsturn on momentarily, then release the button.
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
Note:For more details about Troubleshooting and Technical Support contact information, please visit the support page at our official website: http://www.tp-link.com
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
Appendix C: Configure the PC
In this section, we’ll introduce how to install and configure the TCP/IP correctly in Windows 7. First make sure your Ethernet Adapter is working, refer to the adapter’s manual if needed.
1. On the Windows taskbar, right-click the Network icon 
, and select Open Network andSharing Center > Change adapter settings.2. Right-click your wired network connection (Local Area Connection or Ethernet by default),and select Properties.
3. Double-click Internet Protocol Version 4 (TCP/IPv4).
TC-7620 DOCSIS 3.0 High Speed Cable Modem User Guide
4. Select Obtain an IP address automatically and Obtain DNS server address automatically.
5. Click OK to save the settings.
FCC STATEMENT
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/ TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following twoconditions:
- This device may not cause harmful interference.
- This device must accept any interference received, including interference that may cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliancecould void the user’s authority to operate the equipment.
Safety Information
- When product has power button, the power button is one of the way to shut off the product; when there is no power button, the only way to completely shut off power is to disconnect the product or the power adapter from the power source.
- Don’t disassemble the product, or make repairs yourself. You run the risk of electric shockand voiding the limited warranty. If you need service, please contact us.
- Avoid water and wet locations.
- Adapter shall be installed near the equipment and shall be easily accessible.
- The plug considered as disconnect device of adapter.
Use only power supplies which are provided by manufacturer and in the originalpacking of this product.
Use only power supplies which are provided by manufacturer and in the originalpacking of this product.DOCSIS 3.0 High Speed Cable Modem TC-7620 User Manual – DOCSIS 3.0 High Speed Cable Modem TC-7620 User Manual –