The iptv canada systems are also called interactive TV. The system structure mainly includes subsystems such as streaming media services, program acquisition and editing, storage, and authentication and billing. The main storage and transmission content are streaming media files with MP-4 as the encoding core, based on IP. For network transmissions, content distribution service nodes are typically set up at the edge, and streaming media services and storage devices are configured. The user terminal can be IP decoder + TV, or PC.

The digital cable television broadcasting network adopts the HFC network system, which is the same as the traditional analog cable television network system architecture. However, the network system will be different when a new interactive service (such as VOD) is run. The digital cable TV VOD system mainly includes VOD services, program acquisition and editing, storage and authentication, and billing systems. The main storage and transmission content is MP-2 TS stream, using IP OVER DWDM technology, based on IP DVD fiber optic network transmission, and distribution by IPTV. The type of architecture is different. The digital cable TV VOD system uses a centralized service architecture. There is no need to configure a video server for content storage and distribution on the HFC sub-front end. It is only necessary to place a DWDM receiver and GAM modulation equipment. The operating costs and system management complexity are greatly reduced, and the user terminal is a TV + digital decoder. At present, the domestic digital TV industry chain has been basically formed, and many digital TV set-top box manufacturers, front-end equipment manufacturers, and system integrators have sprung up.

IPTV has very flexible interactive characteristics because it has the inherent advantages of symmetrical interaction of IP networks, and its programs are in broadcast, multicast, and unicast networks. It can realize various functions such as an electronic menu, program reservation, real-time fast forward, fast reverse, terminal account and billing management, program scheduling, etc. very flexibly. In addition, other Internet-based content services may also be launched, such as online gaming, e-mail, and electronic financial management.