Final answer:
The 1.1 version of the DOCSIS introduced solutions for transporting real-time data applications over a cable operator's IP network with quality comparable to that of the telephone company. It improved data transmission and enabled spin-off technologies like free internet-based calling and video calling.
Step-by-step explanation:
Data Over Cable Service Interface Specification (DOCSIS) 1.1 introduced solutions for voice traffic and other real-time data applications to be transported over an IP network managed by a cable operator. By offering cheaper, faster, and higher-quality transmission, it enhanced data transmission. With this version, spin-off technologies like video calling and free internet-based calling were also made possible.