What is VoIP and how is it delivered over a cable network?

What is VoIP and how is it delivered over a cable network?

• A. Video over IP; delivered using the DOCSIS data channel
• B. Voice over IP; delivered using the DOCSIS data channel with dedicated voice services and QoS
• C. Voice over IP; delivered through the analog telephone line
• D. Voice over IP; delivered over the public internet backbone

Answer: (C)

VoIP is Voice over IP, meaning voice signals are converted into digital packets and sent over an IP network. In a cable system, those voice packets travel on the DOCSIS data channel and are typically carried with dedicated voice services and quality of service to ensure low latency, minimal jitter, and reliable delivery. This keeps the traffic within the provider’s managed network rather than using an old analog copper line. While VoIP could traverse the broader Internet, the standard cable-delivered voice service focuses on delivering it over the DOCSIS data path with QoS to guarantee call quality.

VoIP is Voice over IP, meaning voice signals are converted into digital packets and sent over an IP network. In a cable system, those voice packets travel on the DOCSIS data channel and are typically carried with dedicated voice services and quality of service to ensure low latency, minimal jitter, and reliable delivery. This keeps the traffic within the provider’s managed network rather than using an old analog copper line. While VoIP could traverse the broader Internet, the standard cable-delivered voice service focuses on delivering it over the DOCSIS data path with QoS to guarantee call quality.