Page "ITV Digital" Paragraph 8

Additional problems for ONdigital were caused by the choice of 64QAM broadcast mode, coupled with far weaker than expected broadcast power, ( meaning that the signal was weak in many areas ), a complex pricing structure ( comprising many menu options ), a poor quality subscriber management system ( badly adapted from Canal +), a paper magazine TV guide whereas BSkyB had provided an electronic programme guide ( EPG ), insufficient technical customer services, and much signal piracy.

While there was a limited return path provided via an in-built 2400 baud modem, there was no requirement ( as with BSkyB ) to connect the set-top box's modem to a phone line.