Illustration of Internet cables filled with ones and zeroes.

Comcast’s cable Web nonetheless has a heavy emphasis on obtain speeds, as even its gigabit-download service solely comes with 35Mbps uploads. However that might not be the case ceaselessly, as immediately Comcast introduced a “technical milestone” that may ship gigabit-plus obtain and add speeds over current cable wires.

Particularly, Comcast mentioned it performed “a trial delivering 1.25Gbps add and obtain speeds over a dwell manufacturing community utilizing Community Operate Virtualization (NFV) mixed with the newest DOCSIS Know-how.” Comcast put in the service at a house in Jacksonville, Florida, the place “the expertise group persistently measured speeds of 1.25 Gbps add and 1.25Gbps obtain over the connection.”

The speeds have been delivered over a hybrid fiber-cable community, with the coaxial cable offering the ultimate connection into the house. That is nothing new—Comcast has been utilizing each fiber and cable for years, however Comcast mentioned the trial benefitted from the corporate’s “ongoing effort to increase fiber additional into neighborhoods.” Usually, symmetrical gigabit speeds require a fiber-to-the-home connection. However many extra properties have cable than fiber, so a symmetrical gigabit expertise might be deployed sooner if it does not require bringing fiber all the best way to every constructing.

Comcast, the nation’s largest broadband supplier, didn’t say when (or whether or not) a symmetrical 1.25Gbps service will go on sale. For now, extra testing is required. “Within the coming weeks, Comcast will broaden the trial to extra properties as we proceed to check the efficiency of the service beneath a number of totally different house and community environments,” the corporate mentioned.

Count on an extended transition

Symmetrical add and obtain speeds on cable networks are doable due to updates to DOCSIS (Duplex Information Over Cable Service Interface Specification), the cable-industry normal. These sorts of upgrades take years to achieve clients, although. A “full duplex” model of DOCSIS that helps obtain and add speeds of 10Gbps was finalized in October 2017, and a model supporting 10Gbps downloads and 1Gbps uploads was launched in 2013.

Comcast mentioned its symmetrical 1.25Gbps trial required an “superior structure” that features “software-powered networking applied sciences, together with digital fiber optics, ‘Distant PHY’ digital nodes, and a cloud-based, virtualized cable modem termination system platform (vCMTS).”

Comcast does already present multi-gigabit downloads and uploads via its fiber-to-the-home service, however the all-fiber community doesn’t prolong throughout the corporate’s complete cable service space. Comcast launched a symmetrical 2Gbps all-fiber service in 2015 for $300 a month and as much as $1,000 in startup charges.

Comcast in 2018 mentioned its 2Gbps service was obtainable to 18 million properties, however we could not discover any gives for the 2Gbps service on Comcast’s web site immediately. Comcast’s gigabit webpage says you need to name the corporate to ask about getting multi-gigabit speeds.


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