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CAUTION
Disconnect power before
servicing.
This symbol means that your inoperative electronic appliance must be collected separately
and not mixed with the household waste. The European Union has implemented a specific
collection and recycling system for which producers are responsible.
This appliance has been designed and manufactured with high quality materials and
components that can be recycled and reused. Electrical and electronic appliances are liable
to contain parts that are necessary in order for the system to work properly but which can
become a health and environmental hazard if they are not handled or disposed of in the
proper way. Consequently, please do not throw out your inoperative appliance with the
household waste.
If you are the owner of the appliance, you must deposit it at the appropriate local collection
point or leave it with the vendor when buying a new appliance.
- If you are a professional user, please follow your supplier's instructions.
- If the appliance is rented to you or left in your care, please contact your service provider.
Help us protect the environment in which we live !
NORTH AMERICAN CABLE INSTALLER:
This reminder is provided to call your attention to Article 820-40 of the National Electrical Code
(Section 54 of the Canadian Electrical Code, Part 1) which provides guidelines for proper grounding and,
in particular, specifies that the cable ground shall be connected to the grounding system of the building
as close to the point of cable entry as practical.
Illustrations contained in this document are for representation only.
Chapter 1: Connections and Setup
CAUTION
To ensure reliable operation and to prevent
overheating, provide adequate ventilation for this
modem and keep it away from heat sources. Do
not locate near heat registers or other
heat-producing equipment. Provide for free air
flow around the Wireless Gateway and its power
supply.
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Table of Contents
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Summary of Contents for THOMSON TCW750-4

  • Page 1 Chapter 1: Connections and Setup CAUTION CAUTION Disconnect power before To ensure reliable operation and to prevent servicing. overheating, provide adequate ventilation for this modem and keep it away from heat sources. Do not locate near heat registers or other heat-producing equipment.
  • Page 2 Important Information Euro-DOCSIS compliant This product was designed according to Euro-DOCSIS Specifications and Data over Cable Service Interface Specifications. Operating Information Operating Temperature: 0˚ - 40˚ C (32˚ F ~ 104˚ F) Storage Temperature: -20˚ to 75˚ C (-4˚ F ~ 158˚ F) If you purchased this product at a retail outlet, please read the following: Product Information Keep your sales receipt to obtain warranty parts and service and for proof of purchase.
  • Page 3: Table Of Contents

    Introduction ..........................1 Wireless Gateway Features....................1 What’s on the CD-ROM ...................... 1 Computer Requirements....................2 Wall Mounting ........................3 Wireless Gateway TCW750-4 Overview ..................4 Front Panel........................4 Rear Panel ......................... 6 Flank Panel........................6 Relationship among the Devices ....................7 What the Modem Does ......................
  • Page 4 List of Figures 3. Password........................17 4. Diagnostics ......................... 18 5. Event Log ........................19 6. Initial Scan ........................20 7. Backup/Restore ......................21 Network ..........................22 1. LAN..........................22 2. WAN..........................23 3. Computers ........................24 4. DDNS .......................... 25 Advanced ..........................
  • Page 5 List of Figures Wireless..........................39 1. 802.11/ Radio ......................40 2. 802.11/ Primary Network .................... 42 3. Access Control ......................49 4. 802.11/ Advanced....................... 50 5. Bridging ........................52 6. 802.11 QoS (WMM) Settings ..................53 Chapter 3: Networking......................55 Communications ......................
  • Page 6: Chapter 1: Connections And Setup

    Adobe Acrobat Reader — application you can load to read PDF format, if you don’t have it loaded already Links to Thomson web site DOCSIS is trademarks of Cable Television Laboratories, Inc. Illustrations contained in this document are for representation only.
  • Page 7: Computer Requirements

    Chapter 1: Connections and Setup Computer Requirements For the best possible performance from your Wireless Gateway, your personal computer must meet the following minimum system requirements (note that the minimum requirements may vary by cable companies): IBM PC COMPATIBLE MACINTOSH** Pentium preferred PowerPC or higher System RAM...
  • Page 8: Wall Mounting

    Chapter 1: Connections and Setup Wall Mounting Number of screws: 2 pieces. Direction for wall mounting: LED panel upward. Dimension for the screw: 4.4 mm. There are 4 slots on the underside of the gateway that can be used for wall mounting. Note: When wall mounting the unit, ensure that it is within reach of the power outlet.
  • Page 9: Wireless Gateway Tcw750-4 Overview

    Chapter 1: Connections and Setup Wireless Gateway TCW750-4 Overview Front Panel The following illustration shows the front panel of the TCW750-4 gateway: The LEDs on the front panel are described in the table below (from left to right): TCW750- Internet...
  • Page 10 Chapter 1: Connections and Setup No Ethernet Link Operation Ethernet Link FLASH FLASH FLASH FLASH TX/RX Ethernet Traffic No Wireless Link Wireless Link FLASH TX/RX Wireless Traffic Download A software download and while Operati FLASH FLASH updating the FLASH memory Illustrations contained in this document are for representation only.
  • Page 11: Rear Panel

    Chapter 1: Connections and Setup Rear Panel 12VDC: Power connector 4 ETHERNET: Ethernet 10/100BaseT RJ-45 connector RESET : Reset CM CABLE: F-Connector Flank Panel WPS: WiFi Protected Setup Illustrations contained in this document are for representation only.
  • Page 12: Relationship Among The Devices

    Chapter 1: Connections and Setup Relationship among the Devices What the Modem Does The Wireless Gateway provides high-speed Internet access as well as cost-effective fax/modem services over residential, commercial, and education subscribers on public and private networks via an existing CATV infrastructure.
  • Page 13 Chapter 1: Connections and Setup Please verify the following with the cable company The cable service to your home supports Euro-DOCSIS compliant two-way modem access. You have a cable outlet near your PC and it is ready for Cable Modem service. Note: It is important to supply power to the modem at all times.
  • Page 14: Connecting The Wireless Gateway To A Single Computer

    Chapter 1: Connections and Setup Connecting the Wireless Gateway to a Single Computer This section of the manual explains how to connect your Wireless Gateway to the Ethernet port on your computer and install the necessary software. Please refer to Figure 1 to help you connect your Digital Cable Modem for the best possible connection.
  • Page 15: Important Connection Information

    Chapter 1: Connections and Setup Important Connection Information The Wireless Gateway supports Ethernet connections simultaneously. Below are important points to remember before you connect the Wireless Gateway. Ethernet Connection to a Computer Make the connection to the modem in the following sequence: 1.
  • Page 16: Connecting More Than A Computer To The Wireless Gateway

    Chapter 1: Connections and Setup Connecting More Than A Computer to the Wireless Gateway If you need to connect more than a computer to TCW750-4, simply connect the computers to the Ethernet ports on the rear panel. Fig.3: Multiple-PC Connection Note: You may need to check with your service provider in order to connect multiple computers.
  • Page 17: Turning On The Wireless Gateway

    Chapter 1: Connections and Setup Turning on the Wireless Gateway After installing the Wireless Gateway and turn it on for the first time (and each time the modem is reconnected to the power), it goes through several steps before it can be used. Each of these steps is represented by a different pattern of flashing lights on the front of the modem.
  • Page 18: Chapter 2: Web Configuration

    Chapter 2: WEB Configuration Chapter 2: WEB Configuration To make sure that you can access the Internet successfully, please check the following first. Make sure the Ethernet connection between the Wireless Gateway and your computer is OK. Make sure the TCP/IP protocol is set properly. Subscribe to a Cable Company.
  • Page 19: Outline Of Web Manager

    Chapter 2: WEB Configuration Outline of Web Manager The main screen will be shown as below. Fig. 5 Main Menu: the hyperlinks on the top of the page. Title: the sidebar on the left side of the page indicates the title of this management interface, e.g., Software in this example Main Window: the current workspace of the web management, containing configuration or status information...
  • Page 20 Chapter 2: WEB Configuration Status 1. Software The information section shows the hardware and software information about your gateway. The status section of this page shows how long your gateway has operated since last time being powered up, and some key information the Cable Modem received during the initialization process with your cable company.
  • Page 21 Chapter 2: WEB Configuration 2. Connection This page reports current connection status containing startup procedures, downstream and upstream status, CM online information, and so on. The information can be useful to your cable company’s support technician if you’re having problems. Fig.
  • Page 22 Chapter 2: WEB Configuration 3. Password This page is used to change the password that enables you to access the gateway web pages next time. The default User ID is “ ”(EMPTY), and the password is “admin”. The password can be a maximum of 8 characters and is case sensitive.
  • Page 23 Chapter 2: WEB Configuration 4. Diagnostics This page offers basic diagnostic tools for you to utilize when connectivity problems occur. When you ping an Internet device, you send a packet to its TCP/IP stack, and it sends one back to yours. To use the ping Test, enter the information needed and press Start Test;...
  • Page 24: Event Log

    Chapter 2: WEB Configuration 5. Event Log This page displays the contents of the SNMP event log. Press “Clear Log” button to clear the logs. Fig. 10 Illustrations contained in this document are for representation only.
  • Page 25: Initial Scan

    Chapter 2: WEB Configuration 6. Initial Scan To speed up the modem’s first time startup, enter known downstream frequency and/or upstream channel ID information here. Then click “Apply and Reboot” button to start scanning the cable network beginning with the values supplied here. Fig.
  • Page 26: Backup/Restore

    Chapter 2: WEB Configuration 7. Backup/Restore This page allows you to save your current settings locally on your PC, or restore settings previously saved. Fig. 12 Illustrations contained in this document are for representation only.
  • Page 27 Chapter 2: WEB Configuration Network 1. LAN You can activate the DHCP server function for the LAN on this page. With this function activated, your cable company’s DHCP server provides one IP address for your gateway, and your gateway’s DHCP server provides IP addresses, starting at the address you set in IP Address on the LAN page, to your PCs.
  • Page 28 Chapter 2: WEB Configuration 2. WAN You can configure the optional internal DHCP server for the WAN on this page. Select different WAN Connection Type will lead to different contents. Take the WAN connection type-DHCP for example, you can release and renew the WAN lease by pressing the buttons. You can enter a spoofed MAC address that causes your gateway networking stack to use that MAC address when communicating instead of the usual WAN MAC address, e.g., if the MAC address is 00:11:e3:df:66:95, this spoofed MAC address could be 00:11:e3:df:66:97 or any desired MAC address.
  • Page 29 Chapter 2: WEB Configuration 3. Computers This page displays the status of the DHCP clients and current system time. You can cancel an IP address lease by selecting it in the DHCP Client Lease Info list and then clicking the Force Available button. If you do so, you may have to perform a DHCP Renew on that PC, so that it can obtain a new lease.
  • Page 30 Chapter 2: WEB Configuration 4. DDNS This page allow setup of Dynamic DNS service. Fig. 16 DDNS Service : Choose Enabled ( www.DynDNS.org ) to enable the basic setting. Choose Disabled to close the basic setting. Username- The username that you registered with your DDNS provider. Password- The password that you registered with your DDNS provider Host Name- The domain name or host name that is registered with your DDNS provider Status : It shows the DDNS service status whether it is enabled or disabled.
  • Page 31 Chapter 2: WEB Configuration Advanced 1. Options This page allows you to enable/disable some features of the Wireless Gateway. Fig. 17 WAN Blocking prevents others on the WAN side from being able to ping your gateway. With WAN Blocking enabled, your gateway will not respond to pings it receives, effectively “hiding” your gateway.
  • Page 32: Ip Filtering

    Chapter 2: WEB Configuration the services from other registered UPnP devices on the network. NatSip Alg Enable feature enabled by default. While ALG could help in solving NAT related problems in client LAN side. An ALG understands the protocol used by the specific applications that it supports and does a protocol packet-inspection of SIP traffic through it.
  • Page 33: Mac Filtering

    Chapter 2: WEB Configuration 3. MAC Filtering This page enables you to enter the MAC address of specific PCs on your LAN that you wish to NOT have outbound access to the WAN. As with IP filtering, these PCs can still communicate with each other through the gateway, but packets they send to WAN addresses are blocked.
  • Page 34: Port Filtering

    Chapter 2: WEB Configuration 4. Port Filtering This page allows you to enter ranges of destination ports (applications) that you don’t want your LAN PCs to send packets to. Any packets your LAN PCs send to these destination ports will be blocked. For example, you could block access to worldwide web browsing (http = port 80) but still allow email service (SMTP port 25 and POP-3 port 110).
  • Page 35 Chapter 2: WEB Configuration 5. Forwarding For LAN WAN communications, the gateway normally only allows you to originate an IP connection with a PC on the WAN; it will ignore attempts of the WAN PC to originate a connection onto your PC. This protects you from malicious attacks from outsiders.
  • Page 36: Port Triggers

    Chapter 2: WEB Configuration 6. Port Triggers Some Internet activities, such as interactive gaming, require that a PC on the WAN side of your gateway be able to originate connections during the game with your game playing PC on the LAN side. You could use the Advanced-Forwarding web page to construct a forwarding rule during the game, and then remove it afterwards (to restore full protection to your LAN PC) to facilitate this.
  • Page 37: Dmz Host

    Chapter 2: WEB Configuration 7. DMZ Host Use this page to designate one PC on your LAN that should be left accessible to all PCs from the WAN side, for all ports. For example, if you put an HTTP server on this machine, anyone will be able to access that HTTP server by using your gateway IP address as the destination.
  • Page 38: Rip (Routing Information Protocol) Setup

    Chapter 2: WEB Configuration 8. RIP (Routing Information Protocol) Setup This feature enables the gateway to be used in small business situations where more than one LAN (local area network) is installed. The RIP protocol provides the gateway a means to “advertise” available IP routes to these LANs to your cable operator, so packets can be routed properly in this situation.
  • Page 39: Web Content Filtering

    Chapter 2: WEB Configuration Firewall 1. Web Content Filtering These pages allow you to enable, disable, and configure a variety of firewall features associated with web browsing, which uses the HTTP protocol and transports HTML web pages. On these pages, you designate the gateway packet types you want to have forwarded or blocked.
  • Page 40: Tod Filtering

    Chapter 2: WEB Configuration 2. TOD Filtering Use this page to set rules that will block specific LAN side PCs from accessing the Internet, but only at specific days and times. Specify a PC by its hardware MAC address, and then use the tools to specify blocking time.
  • Page 41: Local Log And Remote Log

    Chapter 2: WEB Configuration 3. Local Log and Remote Log The gateway builds a log of firewall blocking actions that Firewall has taken.Using the Local Log page lets you specify an email address to which you want the gateway to email this log. You must also tell the gateway your outgoing (i.e.
  • Page 42 Chapter 2: WEB Configuration The Remote Log page allows you to specify the IP address where a SysLog server is located and select different types of firewall events that may occur. Then, each time such an event occurs, notification is automatically sent to this log server.
  • Page 43: Parental Control

    Chapter 2: WEB Configuration Parental Control 1. Basic This page allows you to enable, disable, and configure a variety of firewall features associated with web browsing, which uses the HTTP protocol and transports HTML web pages. On these pages, you designate the gateway packet types you want to have forwarded or blocked.
  • Page 44 The TCW750-4 gateway offers a choice of 802.1x, WPA and WPA-PSK authentication of your PCs to the gateway, 64 and 128 bit WEP encryption of communication between the gateway and your PCs to guaranty security, and an Access Control List function that enables you to restrict wireless access to only your specific PCs.
  • Page 45: 11/ Radio

    Chapter 2: WEB Configuration Security Security secures or scrambles messages traveling through the air between your wireless PCs and the gateway, so they can’t be observed by others. The following minimum security setting changes to factory defaults are recommended. See the 802.11b/g Primary Network Web Page discussion below for details. Data Encryption –...
  • Page 46 Chapter 2: WEB Configuration Value List or Setting Description Default Range Network Set the Network Name Up to 32-character Thom_Dxxxxxx Name (SSID) (also known as SSID) of string containing this network. ASCII characters with codes between 0x20 and 0x7e Network Type Select Closed to hide the Open, Closed Open...
  • Page 47: 11/ Primary Network

    Chapter 2: WEB Configuration 2. 802.11/ Primary Network This page allows you to configure the Network Authentication. Here provides several different modes of wireless security. You will have to enter proper information according to the mode you select. Fig. 31 Primary Network: It is used to Enable or Disable the whole Primary Network feature.
  • Page 48 Chapter 2: WEB Configuration Disable, your SSID is not included in the beacon. This hides your network name (SSID), but as a result may require a bit more effort on your part to set up your wireless PCs. And when we Enable the WPS Config then the Closed Network will be Disabled automatically.
  • Page 49 Chapter 2: WEB Configuration 802.1x Authentication If you enable the 802.1x authentication function, you will have to offer the following information- RADIUS Server: RADIUS Server is a protocol for carrying authentication, authorization, and configuration information between a Network Access Server which desires to authenticate its links and a shared Authentication Server.
  • Page 50 Chapter 2: WEB Configuration RADIUS Server/RADIUS Port/RADIUS Key: Please refer to the previous page. Group Key Rotation Interval: Key in the time for the WAP group key rotation interval. The unit is second. With increasing rekey interval, user bandwidth requirement is reduced. WPA/WPA2 Re-auth Interval: When a wireless client has associated with the Wireless Gateway for a period of time longer than the setting here, it would be disconnected and the authentication will be executed again.
  • Page 51 WiFi Protected Setup (WPS) is an easy and secure way of configuring and connecting your WiFi access point. In your case, the TCW750-4 is the Access Point (AP), and Your PC (or Wifi Device) is called the STA. When configuring your Wifi Network via WPS, Messages are exchanged between the STA and AP in order to configure the Security Settings on both equipment.
  • Page 52 Chapter 2: WEB Configuration Note: After you Enabled the WPS you will get the options as show in Fig.35. And the WPS Config State box will show its configuration status. Device Name: By using this you can change the factory default to a name of your choice which is up to 32 characters long as like SSID.
  • Page 53 Chapter 2: WEB Configuration If you select WPS Method to PIN then it will ask for PIN while configuring the WiFi AP by showing a text box so, you need to enter PIN to establish the connection. You can get the PIN from your connected Wi-Fi client.
  • Page 54: Access Control

    Chapter 2: WEB Configuration 3. Access Control This page allows you to make access control to the AP (Access Point) or connected clients by offering the MAC Addresses of the clients. Fig. 42 Administration Web page Access: It Allow or Deny access to Administration Web Page from PC connected over WiFi.
  • Page 55: 11/ Advanced

    Chapter 2: WEB Configuration 4. 802.11/ Advanced This page allows you to configure some advanced settings. The factory default values should provide good results in most cases. We don’t recommend you change these settings unless you have technical knowledge of 802.11b wireless technology. For expert users, details of all settings on this web page are provided below.
  • Page 56 Chapter 2: WEB Configuration Network Mode: and choose There are three modes for you to choose, please check the specification of your wireless card a proper setting. Protection: Select Auto to turn on the 54g protection; select Off to turn down the protection. Xpress Technology: When Xpress is turned on, aggregate throughput (the sum of the individual throughput speeds of each...
  • Page 57 Chapter 2: WEB Configuration 5. Bridging The Bridging page provides a location where settings can be adjusted related to the WDS (Wireless Distribution System) feature. WDS is a system that enables the interconnection of access points wirelessly. It may also be referred to as repeater mode because it appears to bridge and accept wireless clients at the same time (unlike traditional bridging).
  • Page 58: Qos (Wmm) Settings

    Chapter 2: WEB Configuration 6. 802.11 QoS (WMM) Settings Wi-Fi Multimedia (WMM) is a component of the IEEE 802.11e wireless LAN standard for quality of service (QoS). The QoS assigns priority to the selected network traffic and prevents packet collisions and delays thus improving VoIP calls and watching video over WLANs.
  • Page 59 Chapter 2: WEB Configuration CWmax: This attribute shall specify the value of the maximum size of the window that shall be used by a QAP for a particular AC for generating a random number for the backoff. AIFSN: This attribute shall specify the number of slots, after a SIFS duration, that the QAP, for a particular AC, shall sense the medium idle either before transmitting or executing a backoff.
  • Page 60: Chapter 3: Networking

    Chapter 3: Networking Chapter 3: Networking Communications Data communication involves the flow of packets of data from one device to another. These devices include personal computers, Ethernet, cable modems, digital routers and switches, and highly integrated devices that combine functions, like the Wireless Cable Gateway. The gateway integrates the functionality often found in two separate devices into one.
  • Page 61: Cable Modem (Cm) Section

    Chapter 3: Networking configure its networking side; when you communicate with the networking side, your communication is following this path. Each packet on the Internet addressed to a PC in your home travels from the Internet down- stream on the cable company’s system to the WAN side of your Wireless Cable Gateway.
  • Page 62: Three Networking Modes

    Chapter 3: Networking When a packet enters a network interface, it is offered to all the TCP/IP stacks associated with the device side from which it entered. But only one stack can accept it — a stack whose configured Ethernet address matches the Ethernet destination address inside the packet.
  • Page 63 Chapter 3: Networking Fig. 48 CM (Cable Modem) Mode provides basic home networking. In this mode, two IP stacks are active: • IP Stack 1 - for use by the cable company to communicate with the cable modem section only. This stack receives its IP address from the cable company during CM initialization.
  • Page 64: Residential Gateway (Rg) Mode

    Chapter 3: Networking Residential Gateway (RG) Mode Fig. 49 Fig. 50 RG (Residential Gateway) Mode provides basic home networking plus NAT (Network Address Translation). In this mode, three IP stacks are active: • IP Stack 1 - for use by the cable company to communicate with the Cable Modem section only. This stack receives its IP address from the cable company during CM initialization.
  • Page 65: Cablehome (Ch) Mode

    Chapter 3: Networking • IP Stack 3 - for use by you to remotely (i.e. from somewhere on the WAN side, such as at your remote workplace) communicate with the Cable Modem and Networking sections, to remotely access the internal web page diagnostics and configuration. This stack is also used by your cable company to deliver packets between the Internet and the gateway’s networking section so they can be routed to/from your PCs.
  • Page 66 Chapter 3: Networking control the home networking configuration of your Wireless Cable Gateway for you, so you don’t need to perform the configuration yourself. In this mode, four IP stacks are active: • IP Stack 1 - for use by the cable company to communicate with the Cable Modem section only. This stack receives its IP address from the cable company during CM initialization.
  • Page 67: Network

    Chapter 3: Networking MAC and IP Addresses Summary This table summarizes all the MAC and IP addresses that may be associated with the TCP/IP communication stacks in your Wireless Cable Gateway. The ones actually used depend upon your gateway Operating Mode, as explained above. At minimum, your cable company will need to know the MAC address associated with IP Stack 1, which is the MAC address shown on the modem label.
  • Page 68: Chapter 4: Additional Information

    Chapter 4: Additional information Chapter 4: Additional Information Frequently Asked Questions Q. What if I don’t subscribe to cable TV? A. If cable TV is available in your area, data and voice service may be made available with or without cable TV service.
  • Page 69 Chapter 4: Additional Information packets, so that more useful data can be sent during a given amount of time. * Monthly subscription fee applies. Additional equipment required. Contact your cable company and ISP for any restrictions or additional fees. Illustrations contained in this document are for representation only.
  • Page 70 Chapter 4: Additional information General Troubleshooting You can correct most problems you have with your product by consulting the troubleshooting list that follows. I can’t access the internet. Check all of the connections to your Wireless Gateway. Your Ethernet card may not be working. Check each product’s documentation for more information.
  • Page 71 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Trade Name: Model: TCW750-4 Equipment Classification: Computing Device Accessory Responsible Party: Thomson Inc.
  • Page 72: Service Information

    Chapter 4: Additional information Service Information If you purchased or leased your Wireless Gateway directly from your cable company, then warranty service for the Digital Cable Modem may be provided through your cable provider or its authorized representative. For information on 1) Ordering Service, 2) Obtaining Customer Support, or 3) Additional Service Information, please contact your cable company.
  • Page 73 Chapter 4: Additional Information Glossary 10BaseT – Unshielded, twisted pair cable with an RJ-45 connector, used with Ethernet LAN (Local Area Network). “10” indicates speed (10 Mbps), “Base” refers to baseband technology, and “T” means twisted pair cable. Authentication - The process of verifying the identity of an entity on a network. DHCP (Dynamic Host Control Protocol) –...
  • Page 74 802.11a/b/g networks. Please do not send any products to the Indianapolis address listed in this manual or on the carton. This will only add delays in service for your product. Thomson Inc. 101 W 103rd Street Indianapolis, IN 46290...

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