To follow the transition from analog to digital in the field of terrestrial television broadcasting, and to keep pace with these technological international innovations, , Tunisia through the Office of National Broadcasting has planned the following phases to digitize its terrestrial broadcasting networks:

First phase: Deployment, since 2001, of an experimental digital TV broadcasting unit using DVB-T system, and MPEG-2 compression, implemented in Boukornine site, to insure the coverage of Great Tunis (25% of population). This experimental project highlighted the benefits of digitization which are :
-Better quality of Video and audio signals,
-Increasing the capacity of distribution networks through the transmission of a digital TV package (bouquet): a layer of digital distribution network enables the transmission of 4 to 6 programs TV instead of a single TV program in the case of an analog network
-The economics of radio spectrum and the energy consumption.
-Introduction of new multimedia services.
In preparatory phase, ONT has prepared the frequency plan for digital terrestrial TV networks of and has signed the final acts of the Regional Radio Communication Conference 2006 in Geneva organized by the International Telecommunications Union, which recommends to switch off analog broadcasting services around 2015 and their replacement by digital broadcasting systems.

Second phase: This phase includes the completion of the two following projects:

1- First part: Digitization of the transmission network between production studios and different broadcasting stations. The network consists of 41 transmission stations spread throughout the country. This step represents the first part of the Digital Terrestrial TV network, and its deployment is completed during the period 2008-2009. The cost of this project is 27 million dinars TTC.

2- Second part: National digital terrestrial TV broadcasting Network to viewers, which consists of 17 DTTV stations spread throughout the country and will be conducted under a contract including a vendor financing agreement with the Thomson Grass Valley (France) company. The project came into force in August 2009 and will be conducted during 2009-2010. Its cost is 13 million dinars TTC.