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04/01/2005
Advanced PHY
In the latter part of 2002, I penned two columns discussing the then-new Data Over Cable Service Interface Specification (DOCSIS) 2.0, its support for greater per-channel upstream data throughput, two new multiple access technologies-advanced time division multiple access (A-TDMA) and synchronous code division multiple access (S-CDMA)-and something called advanced PHY. (See the October and November 2002 issues of Communications Technology: www.ct-magazine.com/archives/ct/1002/1002_broadband.html and www.ct-magazine.com/archives/ct/1102/1102_broadband.html.)
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04/01/2005
Voip Testing
Now that we've finally reached the Year of VoIP (voice over Internet protocol), our installation and operations teams are beginning to realize that although voice and data both involve packets traveling across networks, voice requires different tests to verify that telephony is working. Voice quality measurement, or how closely the received waveform of a conversation matches the sending end waveform, is quickly gaining status as a metric for telephony offerings. Along with that status comes the need to understand the correlation between various voice quality measurement models and the limitations of automated voice quality testing.
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12/01/2004
Another View
Here are some letters we received at our sister publication, "CT's Pipeline" about the cable engineering community's readiness to embrace Internet protocol (IP) technology. We welcome letters to the editor at lhamilton@accessintel.com. All letters may be published and edited for style or length.
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11/21/2004
Deals
CTAM hired Source Marketing to develop/manage retail promotions for the "OnlyCableCan" effort. The CT-based agency will deliver its 1st set of campaigns this fall. Source’s clients include Time Warner Cable and Discovery.