Original sentence: )  Some providers also display caller ID information to users which have that provider's cable telephone service.Cable distributors use digital video compression to transfer more channels through cable networks already in place.Digital technology also gives two-way communication capability to the cable box, so users can purchase pay-per-view programming without use of a telephone line, in addition to video on demand services and a secure signal (i.an encrypted signal to prevent "stealing" service
Edited sentence: )  Most digital cable providers use QAM for video services and DOCSIS standards for data services.Customers were increasingly interested in more channels, pay-per-view programming, and high speed internet services.Digital cable technology has allowed cable providers to compress video channels so that they take up less frequency space and to offer various two-way communication capabilities.In the 1990s cable providers began to invest heavily in new digital based distribution systems.Some providers have also begun to roll out video services using IPTV or Switched video technologies.This has enabled digital cable providers to offer more channels, video on demand services (without use of a telephone line), telephone services, high speed internet services, and interactive television services via a secure digital distribution system (i.a secure encrypted signal to prevent eavesdropping and "stealing" service