Modems
Qwest® Standard Modem: Actiontec® GT701
Installation & set-up
Drivers / firmware update & recovery
Advanced configuration
Questions & answers
Installation & set-up
Before you begin, it is important to confirm these instructions are for your specific modem. Please verify your modem does NOT have an antenna, as shown in the photo above.
Qwest.net™ ISP Service
PPPoA Dynamic IP Setup (PDF)
PPPoA Single Static IP Setup (PDF)
PPPoA Multiple Static IPs (PDF)
Change PPPoA to PPPoE (PDF)
Qwest Choice™ DSL with MSN® Premium Service
PPPoA Dynamic IP Setup (PDF)
Other ISP Service
View list of ISPs that support Qwest Broadband service.
Contact your ISP directly for support with the following configurations. The self-service help documents listed below are provided for your reference only.
PPPoA Dynamic IP Setup (PDF)
Selasa, 09 September 2008
Modem
From Wikipedia, the free encyclopedia
Jump to: navigation, search
For other uses, see Modem (disambiguation).
Modem (from modulator-demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data. Modems can be used over any means of transmitting analog signals, from driven diodes to radio.
The most familiar example is a voiceband modem that turns the digital 1s and 0s of a personal computer into sounds that can be transmitted over the telephone lines of Plain Old Telephone Systems (POTS), and once received on the other side, converts those 1s and 0s back into a form used by a USB, Ethernet, serial, or network connection. Modems are generally classified by the amount of data they can send in a given time, normally measured in bits per second, or "bps". They can also be classified by Baud, the number of times the modem changes its signal state per second.
Baud is NOT the modem's speed. The baud rate varies, depending on the modulation technique used. Original Bell 103 modems used a modulation technique that saw a change in state 300 times per second. They transmitted 1 bit for every baud, and so a 300 bit/s modem was also a 300-baud modem. However, casual computerists confused the two. A 300 bit/s modem is the only modem whose bit rate matches the baud rate. A 2400 bit/s modem changes state 600 times per second, but due to the fact that it transmits 4 bits for each baud, 2400 bits are transmitted by 600 baud, or changes in states.
Faster modems are used by Internet users every day, notably cable modems and ADSL modems. In telecommunications, "radio modems" transmit repeating frames of data at very high data rates over microwave radio links. Some microwave modems transmit more than a hundred million bits per second. Optical modems transmit data over optical fibers. Most intercontinental data links now use optical modems transmitting over undersea optical fibers. Optical modems routinely have data rates in excess of a billion (1x109) bits per second. One kilobit per second (kbit/s or kb/s or kbps) as used in this article means 1000 bits per second and not 1024 bits per second. For example, a 56k modem can transfer data at up to 56,000 bits per second over the phone line.
From Wikipedia, the free encyclopedia
Jump to: navigation, search
For other uses, see Modem (disambiguation).
Modem (from modulator-demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data. Modems can be used over any means of transmitting analog signals, from driven diodes to radio.
The most familiar example is a voiceband modem that turns the digital 1s and 0s of a personal computer into sounds that can be transmitted over the telephone lines of Plain Old Telephone Systems (POTS), and once received on the other side, converts those 1s and 0s back into a form used by a USB, Ethernet, serial, or network connection. Modems are generally classified by the amount of data they can send in a given time, normally measured in bits per second, or "bps". They can also be classified by Baud, the number of times the modem changes its signal state per second.
Baud is NOT the modem's speed. The baud rate varies, depending on the modulation technique used. Original Bell 103 modems used a modulation technique that saw a change in state 300 times per second. They transmitted 1 bit for every baud, and so a 300 bit/s modem was also a 300-baud modem. However, casual computerists confused the two. A 300 bit/s modem is the only modem whose bit rate matches the baud rate. A 2400 bit/s modem changes state 600 times per second, but due to the fact that it transmits 4 bits for each baud, 2400 bits are transmitted by 600 baud, or changes in states.
Faster modems are used by Internet users every day, notably cable modems and ADSL modems. In telecommunications, "radio modems" transmit repeating frames of data at very high data rates over microwave radio links. Some microwave modems transmit more than a hundred million bits per second. Optical modems transmit data over optical fibers. Most intercontinental data links now use optical modems transmitting over undersea optical fibers. Optical modems routinely have data rates in excess of a billion (1x109) bits per second. One kilobit per second (kbit/s or kb/s or kbps) as used in this article means 1000 bits per second and not 1024 bits per second. For example, a 56k modem can transfer data at up to 56,000 bits per second over the phone line.
Practice Connecting Manually
Another skill that you should practice before you set out on your trip is that of making a manual connection through your modem. In other words, you dial the call yourself (rather than letting the modem autodial) and then use your software to connect the modem manually once you hear the carrier tone. See the phone at the left? While this looks like (and indeed is) a relic of the past, it was nevertheless encountered at an otherwise posh and modern resort in South America in early 1996! While most software and modems can be set to use pulse dialing when using old rotary systems like this, the setup at this hotel presented a special problem. International calls had to be placed through the switchboard. To obtain a local outside line, I had to press the button to the lower right of the dial (a task which required a surprising amount of physical effort). The only way I was able to make this work was to 1) pick up the handset and give a hefty push on the outside line button, 2) dial the local access number for my provider myself using the rotary dial, and 3) connect the modem manually with my software and hang up the phone once I obtained a carrier tone. Had I not had a local access number, I would have had to have the switchboard place the call, and then connect manually. (Before any of this could occur, I might add, I had to practice basic wiretapping as described and shown above.)
Even if you never encounter a phone system as unusual as this one, you still might find situations that require making a manual connection. If you are trying to work through a digital phone system, you might find that you are unable to autodial using either a digital connector or acoustic coupler. The solution will be to connect manually. Even the public “data phones” I've seen in the U.S. expect you to make a manual connection after you've dialed the call.
Fortune may smile on you, and you may never encounter a situation that requires connecting manually. However, if you want to increase your chances of connecting successfully from virtually anywhere, become familiar with hooking up manually by practicing at home before you leave. It will save you frustration (and the expense of many fruitless phone calls) if you should unexpectedly run into a situation that requires it.
Even if you never encounter a phone system as unusual as this one, you still might find situations that require making a manual connection. If you are trying to work through a digital phone system, you might find that you are unable to autodial using either a digital connector or acoustic coupler. The solution will be to connect manually. Even the public “data phones” I've seen in the U.S. expect you to make a manual connection after you've dialed the call.
Fortune may smile on you, and you may never encounter a situation that requires connecting manually. However, if you want to increase your chances of connecting successfully from virtually anywhere, become familiar with hooking up manually by practicing at home before you leave. It will save you frustration (and the expense of many fruitless phone calls) if you should unexpectedly run into a situation that requires it.
Jumat, 05 September 2008
Modem kabel
Dari Wikipedia bahasa Indonesia, ensiklopedia bebas
Langsung ke: navigasi, cari
Modem kabel tampak dari belakang dengan soket-soketnya
Modem Kabel (Cable Modem), adalah perangkat keras yang menyambungkan PC dengan sambungan TV kabel. Jaringan TV kabel ini dapat dipakai untuk koneksi ke internet dengan kecepatan maksimum 27Mbps downstream (kecepatan download ke pengguna) dan 2,5Mbps upstream (kecepatan upload dari pengguna). Agar dapat menggunakan modem kabel, komputer harus dilengkapi dengan kartu ethernet (ethernet card).
[sunting] Jaringan
Di dalam jaringan rumah, kabel dari "TV kabel" menggunakan kabel koaksial dan dipasang sebuah "pemisah saluran" (splitter) kabel. Setelah kabel dari jaringan (cable network) melewati splitter, kabel tersalur dalam dua saluran, satu ke TV dan satu lagi ke modem kabel. Dari modem kabel baru menuju kartu ethernet dan kemudian ke komputer.
[sunting] Lihat pula
Dari Wikipedia bahasa Indonesia, ensiklopedia bebas
Langsung ke: navigasi, cari
Modem kabel tampak dari belakang dengan soket-soketnya
Modem Kabel (Cable Modem), adalah perangkat keras yang menyambungkan PC dengan sambungan TV kabel. Jaringan TV kabel ini dapat dipakai untuk koneksi ke internet dengan kecepatan maksimum 27Mbps downstream (kecepatan download ke pengguna) dan 2,5Mbps upstream (kecepatan upload dari pengguna). Agar dapat menggunakan modem kabel, komputer harus dilengkapi dengan kartu ethernet (ethernet card).
[sunting] Jaringan
Di dalam jaringan rumah, kabel dari "TV kabel" menggunakan kabel koaksial dan dipasang sebuah "pemisah saluran" (splitter) kabel. Setelah kabel dari jaringan (cable network) melewati splitter, kabel tersalur dalam dua saluran, satu ke TV dan satu lagi ke modem kabel. Dari modem kabel baru menuju kartu ethernet dan kemudian ke komputer.
[sunting] Lihat pula
Modem kabel
Dari Wikipedia bahasa Indonesia, ensiklopedia bebas
Langsung ke: navigasi, cari
Modem kabel tampak dari belakang dengan soket-soketnya
Modem Kabel (Cable Modem), adalah perangkat keras yang menyambungkan PC dengan sambungan TV kabel. Jaringan TV kabel ini dapat dipakai untuk koneksi ke internet dengan kecepatan maksimum 27Mbps downstream (kecepatan download ke pengguna) dan 2,5Mbps upstream (kecepatan upload dari pengguna). Agar dapat menggunakan modem kabel, komputer harus dilengkapi dengan kartu ethernet (ethernet card).
[sunting] Jaringan
Di dalam jaringan rumah, kabel dari "TV kabel" menggunakan kabel koaksial dan dipasang sebuah "pemisah saluran" (splitter) kabel. Setelah kabel dari jaringan (cable network) melewati splitter, kabel tersalur dalam dua saluran, satu ke TV dan satu lagi ke modem kabel. Dari modem kabel baru menuju kartu ethernet dan kemudian ke komputer.
[sunting] Lihat pula
Dari Wikipedia bahasa Indonesia, ensiklopedia bebas
Langsung ke: navigasi, cari
Modem kabel tampak dari belakang dengan soket-soketnya
Modem Kabel (Cable Modem), adalah perangkat keras yang menyambungkan PC dengan sambungan TV kabel. Jaringan TV kabel ini dapat dipakai untuk koneksi ke internet dengan kecepatan maksimum 27Mbps downstream (kecepatan download ke pengguna) dan 2,5Mbps upstream (kecepatan upload dari pengguna). Agar dapat menggunakan modem kabel, komputer harus dilengkapi dengan kartu ethernet (ethernet card).
[sunting] Jaringan
Di dalam jaringan rumah, kabel dari "TV kabel" menggunakan kabel koaksial dan dipasang sebuah "pemisah saluran" (splitter) kabel. Setelah kabel dari jaringan (cable network) melewati splitter, kabel tersalur dalam dua saluran, satu ke TV dan satu lagi ke modem kabel. Dari modem kabel baru menuju kartu ethernet dan kemudian ke komputer.
[sunting] Lihat pula
Kamis, 04 September 2008
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