PHILADELPHIA – Comcast announced yesterday it successfully tested “a prototype 10G modem using the core technology that will deliver multigigabit speeds to tens of millions of homes,” a press release says. In what Comcast says was a world-first lab test, “a Full Duplex DOCSIS 4.0 system-on-chip (SoC) cable modem built by Broadcom delivered upload and download speeds faster than 4 gigabits per second (Gbps) powered by 10G network technology,” the release explains. DOCSIS 4.0 is a key component of 10G – it “is an evolutionary leap forward in the ability to deliver multigigabit upload and download speeds over the connections...