Final answer:
The internet access technology in question is DSL (Digital Subscriber Line), a point-to-point technology that enables high-speed data transmission over traditional phone lines and supports a range of services such as Internet-based calling and video calling.
Step-by-step explanation:
The student asks about an internet access technology that is a family of point-to-point technologies designed to provide high-speed data transmission over traditional phone lines. This technology is specifically constrained by the 4 KHz voice channel that traditional phone services use. The answer to the student's question is DSL (Digital Subscriber Line). DSL technology allows for high-speed internet access by utilizing a frequency range that is not used in voice calls. This optimization of the existing telephone infrastructure for internet connectivity paved the way for innovations, including free Internet-based calling and video calling, and contributed to cheaper, faster, and better-quality data transmission.