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Frequently Asked Questions

What is a cable modem?

How fast are cable modems?

Can I watch cable TV while using the cable modem?

Can I talk on the telephone while using the cable modem?

If I buy a new computer or change operating systems, will the cable modem still work?

Should I disconnect from the internet when I'm not using it?

How will a power outage affect the cable modem?

What's the difference between an Ethernet connection and a USB connection?

Will the cable modem be affected if I have additional devices connected to my computer's USB port?

What is a DOCSIS Cable Modem?

Is the cable network fully capable of 2-way transmission?

I already have a modem. Will this replace it?

Will I have trouble having two modems in my personal computer?

Can I purchase my own cable modem?

Are cable modems more insecure than other forms of internet access?

Can other people see what I send and receive through a cable modem?

Can other people see what's on my computer?

How do i report a security violation?

If I have a problem after I am installed, who do I call?

What is a cable modem?
A cable modem allows your computer to communicate with the Internet through a cable TV (CATV) network rather than through a telephone wire. Transferring data over a CATV connection means your connections fast, instantaneous, and independent from your telephone line. There is more than one variety of cable modem.

How fast are cable modems?
Under ideal circumstances, you can receive data from the Internet using a Time Warner Cable modem at speeds approaching 3Mbps (Megabits-per-second); in practice, however, factors like the speed of a web site's host server, or traffic on the Internet, can limit your download speed.

Can I watch cable TV while using the cable modem?
Yes. Although the cable TV signals travel through the same cable as the Internet signals, they travel at different frequencies, and are independent of one another. Your cable TV will work the same as it did before you connected to the cable modem, and your Internet connection will not be affected when you watch TV.

Can I talk on the telephone while using the cable modem?
Yes. Since the cable modem does not use telephone lines, the telephones in your house are totally separate and independent from your Internet connection. You're no longer tying up the telephone line when you're surfing.

If I buy a new computer or change operating systems, will the cable modem still work?
Yes. As long as the operating system is among those supported by the cable modem, you can continue to access the Internet with your cable modem. If you are using a USB data interface and you switch to a new operating system, you may have to install a new USB driver. The computer will automatically search for the correct USB driver.

Should I disconnect from the internet when I'm not using it?
It is not necessary to disconnect from the Internet in order for your computer to remain secure.

If you do choose to disconnect from the Internet, the easiest way is to turn off your computer. If you want to physically disconnect from the Internet and still use your computer, you can remove the 10BaseT cable from the back of your computer. A third option is to release the IP address you were dynamically assigned when you started using the Internet in this particular session; command-line utilities such as WINIPCFG on Windows 95 and Windows 98 and IPCONFIG on Win NT, Win2000 or WinXP provide this functionality

How will a power outage affect the cable modem?
When the power comes back on, the cable modem will go through its normal power-up and initialization states, and will return to a normal operating state. It is recommended, as with all electronic equipment, that the cable modem power supply is plugged into a power surge protector.

What's the difference between an Ethernet connection and a USB connection?
Both are data-interface options for connecting your computer to the cable modem.

An Ethernet connection requires that an Ethernet card be installed in your computer, and that the computer be configured for TCP/IP. With the addition of an Ethernet hub, multiple computers (up to 5 with a Toshiba Docsis modem) can be connected to a single cable modem.

A USB connection can be used if your computer has an available USB port. Although no card installations are necessary with USB, the installation of a USB driver is required. (See page for the your specific type of modem.) The USB interface does not allow for more than one computer to be connected to the cable modem.

Not all modems have USB connections available.

Will the cable modem be affected if I have additional devices connected to my computer's USB port?
Yes, it is possible that the addition of other devices to the USB port could degrade the performance of the cable modem. This is because other devices can use up bandwidth that the cable modem would otherwise be using.

What is a DOCSIS cable modem?
DOCSIS stands for 'Data Over Cable Service Interface Specification' and is the industry's new specification for cable-based Internet access services. Because it is a standard, companies are able to offer DOCSIS cable modem products that are fully interoperable with any cable company who has implemented a DOCSIS cable network. Prior to DOCSIS, cable companies had to purchase all cable Internet access hardware from the same provider.

Is the cable network fully capable of 2-way transmission?
Yes. Time Warner cable modems are only being deployed in areas where the plant has been fully upgraded to a hybrid fiber/coaxial cable network; 500 homes (or less) are fed by each fiber node, and there is an active return path. In addition, the cable system must put in place measurement and maintenance procedures to ensure the integrity of the forward and return paths. This maintenance includes sweeping and aligning the plant to eliminate trouble spots that could produce RF noise or leakage. Such maintenance is becoming a routine part of cable TV's HFC networks everywhere.

I already have a modem. Will this replace it?
That depends on the configuration of your PC. For most of our customers, once they have cable modem's high speed data access, there may be no need to keep using their conventional, slow, telephone data modem. Your PC retailer can tell you if your configuration will accommodate both your existing telephone modem and the cable modem service simultaneously.

Will I have trouble having two modems in my personal computer?
The cable modem is a unique modem. Without becoming technical, the cable modem connection is more similar to a network connection, in that a network card is inserted and connected directly to the cable modem. The modem itself is not connected directly to a serial port, so both types of modems can reside in your computer. However, if your computer already resides on a network there may be a conflict between your current Network Interface Card and the Network Interface Card that supports the cable modem software. Please check with your LAN administrator.

Can I Purchase My Own Cable Modem?
While cable modems are often available for retail sale today, Time Warner Cable requires you to use the cable modem we provide. There is no discount on monthly cable modem service if you have purchased your own modem.

Are Cable Modems More Insecure Than Other Forms Of Internet Access?
No. Cable modems were designed with security in mind and protect customers just as well as other forms of Internet access, including dial-up, ISDN, and ADSL.

Can other people see what I send and receive through a cable modem?
No. While cable modems use a shared data channel, the modems were designed to prevent anyone from intercepting data sent to or from a cable modem. First, our cable modems only deliver TCP/IP traffic; other network protocols, such as NetBEUI and AppleTalk, cannot be transmitted via cable modems. Second, our cable modems only deliver data targeted at the IP addresses of the computers connected to them; there is no way to "sniff" packets sent to or from other subscriber's computers. Third, all data sent to and from the cable modem is encrypted.

Can other people see what's on my computer?
Only if you want them to. Modern operating systems were designed to put you in charge of your computer, including what you choose to share with other people.

How do I report a security violation?
You may use the abuse@maine.rr.com email address to report a security violation committed by a Time Warner cable modem subscriber. Please include documentation of the violation, including logs indicating when the attacks occurred and the IP address of the attacker. If a subscriber of another Internet service has committed a security violation, you should contact the security coordinator for that provider.

If I have a problem after I am installed, who do I call?

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