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Phone Cable

October 12th, 2005

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How does DSL work even when the phone line is disconnected?

One of my friends (who isn't very tech savvy) unplugged her phone cable to her DSL modem because she had the phone company disconnect her phone but not her DSL. I tried to explain to her that DSL is separate from the voice line and all they do is disconnect the voice portion of it. But it got me wondering how it actually works, or if I had explained it right.

DSL uses the frequencies we can't hear to transmit data. Human voice is typically in the 300-3000 hertz range. DSL uses much higher frequencies to transmit data. That's why they have the noise filter you put on if you're going to use a telephone; some people can hear the high pitched noises that DSL uses for data.

They call it a dry loop. There's power on the line, and DSL signal, but no dial tone or voice. But you still have to plug it in to your DSL modem to turn the sound into data.

High frequencies don't travel as far as low frequencies. For example, ever notice how a car nearby might be thumping the bass, and you can feel that, but you can't hear the words or other sounds of their music? That's why the distance to the CO matters for DSL subscribers. (CO is the central office where the equipment typically is) The farther away you are, the less frequency range will travel that distance, which is why you will get either slower service or no service at all.

Find Phone Cable On eBay Below:

RJ45 RJ11 RJ12 Cat5 Cat6 UTP Network Cable Tester for LAN Phone Wire Test Tool
RJ45 RJ11 RJ12 Cat5 Cat6 UTP Network Cable Tester for LAN Phone Wire Test Tool
$10.75
Phone to HDMI VGA TV Adapter Audio Video Cable AV HDTV for iPhone X 5 6 7 8 iPad
Phone to HDMI VGA TV Adapter Audio Video Cable AV HDTV for iPhone X 5 6 7 8 iPad
$20.45
2m RJ11 To RJ11 Cable Lead 4 Pin ADSL DSL Router Modem Phone 6p4c WHITE
2m RJ11 To RJ11 Cable Lead 4 Pin ADSL DSL Router Modem Phone 6p4c WHITE
$1.94
Multiple USB Charger Cable Adapter Lightning Car Wall Micro Portable Mini Phone
Multiple USB Charger Cable Adapter Lightning Car Wall Micro Portable Mini Phone
$11.75
Card Reader Phone Holder Splitter 3 Ports USB 30 OTG Hub SD Micro SD For Laptop
Card Reader Phone Holder Splitter 3 Ports USB 30 OTG Hub SD Micro SD For Laptop
$7.27
HDE RJ45 RJ11 RJ12 Cat5 Cat6 UTP Network Cable Tester for LAN Phone Wire Test To
HDE RJ45 RJ11 RJ12 Cat5 Cat6 UTP Network Cable Tester for LAN Phone Wire Test To
$14.97
For Lightning Phone Connect to RJ45 Ethernet Adapter Wired Network Cable Adapter
For Lightning Phone Connect to RJ45 Ethernet Adapter Wired Network Cable Adapter
$20.63
6017B0314901 GENUINE ORIGINAL HP MODEM PHONE RJ11 CABLE ELITEBOOK 8460P SERIES
6017B0314901 GENUINE ORIGINAL HP MODEM PHONE RJ11 CABLE ELITEBOOK 8460P SERIES
$4.28
Toshiba Tecra R840 Series Internet Phone Jack w Cable
Toshiba Tecra R840 Series Internet Phone Jack w Cable
$6.75
Toshiba Satellite M45 Series Ethernet Phone Jack w Cable
Toshiba Satellite M45 Series Ethernet Phone Jack w Cable
$6.75
Bizfon Phone System 680 Expansion Cable New Warranty BIZ680 10 Pin
Bizfon Phone System 680 Expansion Cable New Warranty BIZ680 10 Pin
$44.99
Belkin Retractable Mini Stereo Cable Mini phone Mini phone 45ft Black
Belkin Retractable Mini Stereo Cable Mini phone Mini phone 45ft Black
$18.50
2PCS Micro USB Male to Micro USB Male Data Charger Cable 1m for Phone Tablet
2PCS Micro USB Male to Micro USB Male Data Charger Cable 1m for Phone Tablet
$2.99
Magnetic USB Charging Sync Cable Cord for Sonim XP5 XP6 XP7 XP6700 Charger Phone
Magnetic USB Charging Sync Cable Cord for Sonim XP5 XP6 XP7 XP6700 Charger Phone
$28.41
Portable Wireless Network Cable Tester SC8108 LAN Phone Cable Test Tools
Portable Wireless Network Cable Tester SC8108 LAN Phone Cable Test Tools
$29.34
6ft 35mm 1 8 Stereo Male Dual RCA M Audio PC Phone IPOD MP3 Cable Cord SHdis
6ft 35mm 1 8 Stereo Male Dual RCA M Audio PC Phone IPOD MP3 Cable Cord SHdis
$1.45
USB C Type C to HDMI Adapter USB 31 Cable For MHL Android Phone Tablet HDTV US
USB C Type C to HDMI Adapter USB 31 Cable For MHL Android Phone Tablet HDTV US
$11.39
20m RJ11 To RJ11 Cable Lead 4 Pin ADSL DSL Router Modem Phone 6p4c WHITE Long
20m RJ11 To RJ11 Cable Lead 4 Pin ADSL DSL Router Modem Phone 6p4c WHITE Long
$8.47
Sony Vaio VGN NW Series Internet Phone Jack 306 0001 1638 A
Sony Vaio VGN NW Series Internet Phone Jack 306 0001 1638 A
$6.75
Lot of 33 Plantronics 40287 13 Modular Cable Assembly Avaya 14xx 96xx Phones
Lot of 33 Plantronics 40287 13 Modular Cable Assembly Avaya 14xx 96xx Phones
$40.00
7 ft RJ11 RJ12 CAT 5E HIGH SPEED VOICE PHONE CABLE UTP TELEPHONE WIRE
7 ft RJ11 RJ12 CAT 5E HIGH SPEED VOICE PHONE CABLE UTP TELEPHONE WIRE
$10.65
APPLE I POD I PHONE Lot of 30 pin i pod sync and charging cables apple
APPLE I POD I PHONE Lot of 30 pin i pod sync and charging cables apple
$35.00
LIFESIZE LINK CABLE 9M PHONE 2ND GENERATION WITH ICON OR DIGITAL MICPOD
LIFESIZE LINK CABLE 9M PHONE 2ND GENERATION WITH ICON OR DIGITAL MICPOD
$52.02
Konftel 900103405 Phone Cable for Phone
Konftel 900103405 Phone Cable for Phone
$29.79
2 in 1 Micro SD Memory Card Reader Cable for I phone iPad External Storage
2 in 1 Micro SD Memory Card Reader Cable for I phone iPad External Storage
$16.99
Panasonic Toughbook CF 28 Internet Ethernet Phone Jack Board W Cable
Panasonic Toughbook CF 28 Internet Ethernet Phone Jack Board W Cable
$13.14
2 Line ADSL2+ Phone Filter w 5 FT RJ 11 Cable
2 Line ADSL2+ Phone Filter w 5 FT RJ 11 Cable
$2.99
Type C USB31 Male to USB C Female Extension Data Cable for Phone Macbook Tablet
Type C USB31 Male to USB C Female Extension Data Cable for Phone Macbook Tablet
$7.84
RJ11 6P4C Female To Ethernet RJ45 8P8C Male F M Adapter Converter Phone Cable
RJ11 6P4C Female To Ethernet RJ45 8P8C Male F M Adapter Converter Phone Cable
$0.99
100cm Down Angled 90D Micro USB Male to USB Data Charge Cable for Phone
100cm Down Angled 90D Micro USB Male to USB Data Charge Cable for Phone
$1.99
usb30 DC Power Charger + Data SYNC Cord Lead Cable For Samsung Galaxy S5 phone
usb30 DC Power Charger + Data SYNC Cord Lead Cable For Samsung Galaxy S5 phone
$2.39
usb30 Charger+Data SYNC Cord Lead Cable For Samsung Galaxy Note 3 III phone
usb30 Charger+Data SYNC Cord Lead Cable For Samsung Galaxy Note 3 III phone
$2.39
IBM Lenovo Thinkpad W500 Internet Phone Jack Board w Cable 42W7851
IBM Lenovo Thinkpad W500 Internet Phone Jack Board w Cable 42W7851
$6.75
short 50cm USB Power Charger+Data SYNC Cable For Samsung Galaxy Note 3 III phone
short 50cm USB Power Charger+Data SYNC Cable For Samsung Galaxy Note 3 III phone
$2.39
OEM MICRO USB FAST CHARGING CABLE CORD SYNC FOR ANDROID CELL PHONE 5FT15m
OEM MICRO USB FAST CHARGING CABLE CORD SYNC FOR ANDROID CELL PHONE 5FT15m
$5.99
IOGEAR GVC301 HD to VGA Adapter with Audio w 3 HD Cables for Phone Tablet PC
IOGEAR GVC301 HD to VGA Adapter with Audio w 3 HD Cables for Phone Tablet PC
$20.00
Bag for Hard Disk Phone Case Mini Usb Cable Case Cover Pouch 25 HDD
Bag for Hard Disk Phone Case Mini Usb Cable Case Cover Pouch 25 HDD
$5.59
Spectrum Time Warner Arris Internet Phone Cable Modem Wiring Kit THREE PACK
Spectrum Time Warner Arris Internet Phone Cable Modem Wiring Kit THREE PACK
$22.95
HP Pavilion DV5000 Series Phone Ethernet Port W Cable DC020006000
HP Pavilion DV5000 Series Phone Ethernet Port W Cable DC020006000
$6.75

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