Both IPTV and OTT use the Internet protocol over a packet - switched network to transmit data .
IPTV operates in a closed system -- a dedicated , managed network controlled by the local cable , satellite , telephone , or fiber - optic company .
Both IPTV and OTT use the Internet protocol over a packet - switched network to transmit data , but IPTV operates in a closed system -- a dedicated , managed network controlled by the local cable , satellite , telephone , or fiber - optic company .