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“Which company is which and how to deal with them”

The Who's Who of SBC DSL

Written by: Patrick Oborn - Aug 27, 2008

So you want SBC DSL but you're looking for a bit more information? Make sure you know the company to which people are referring when they try to answer your questions. SBC is actually a group of several companies and they have as many differences as do completely separate companies.

SBC traces its roots to the original Bell Company. It then broke off into the Southwestern Bell Company. Just a few years ago, SBC acquired Ameritech which offers service in the mid west. It also acquired Pacific Bell on the West coast and a few locations on the east. The behemoth of a company offers a service called SBC DSL however the service is provided by the underlying companies which still operate much like separate companies.

Recently Yahoo DSL was introduced which was simply a branding initiative. The underlying service is SBC DSL. When signing up for the service, your experience may be quite different depending on which region you are in. When reading message boards or consumer group's comments on SBC DSL, just make sure you know which region the person is talking about and don't take their comments too seriously if they're not in your region. Once again, these divisions are as different as separate companies because not too long ago they were separate companies. Also remember when reading chat boards and consumer groups that DSL service is highly dependant on your distance from the phone company so complaint people have about bandwidth may not apply to you as they could be farther from the phone company than you and therefore have a weaker signal.

More Information on DIRECTV >

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How Does DIRECTV Satellite TV Work?

DIRECTV satellites are placed into a geosynchronous orbit about 37,000 km (22,300 miles) above the earth and always remain above the same point on the earth's surface so that all DIRECTV dishes on the earth can be pointed at a fixed satellite location.

DIRECTV shows, movies, music, etc. are broadcast from an "uplink center" where programming from cable television networks and local programming from broadcast networks is collected and encrypted so that the programming cannot be intercepted by non-paying users. The uplink facility uses a dish that is 9 to 12 meters wide to accurately send a high-strength signal to the orbiting DIRECTV satellite.

The DIRECTV satellite converts the signal to a different microwave frequency band to ensure that the downlink to a subscriber's dish is not affected by uplink interference.

After traveling more than 50,000 miles, the DIRECTV signal reaches your dish on the outside of your home, office, or facility. The signal received is focussed by a bowl-shaped parabolic dish onto a device in the center of the dish called a "feed horn", which channels the signal to a "low-noise block downconverter" (LNB) which filters out unwanted interference, and sometimes converts it to another frequency before amplifying it and sending it to the satellite receiver box located inside your house, office, or facility through a coaxial cable.

A DIRECTV satellite receiver box converts the signal to television, audio, and/or data signals and may be may be equipped to decrypt the coded signal itself. You may be supplied with a "smart card" as well to decode the signal.

DIRECTV receivers also include integrated digital video recorders (DVRs) that allow you to rewind and pause live television and to record and store shows on a built-in hard drive. In addition, DIRECTV receivers offer high-definition television (HDTV), pay-per-view events and movies, interactive television channels, and video-on-demand (VOD) channels.


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† National Burglar and Fire Alarm Association, 2004.




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