According to local reports, the W9 service will be made available immediately to DTH subscribers, while in due course TV Breizh and D17 will also be offered in catch-up.
The move is seen as a further response to CanalSat having recently fallen behind in the introduction of catch-up services, something it has already tried to remedy by making MyTF1 and Direct8 available earlier this year.
Just a few days ago CanalSat announced it would be launching two new HD channels, both of which will be available on demand and to IPTV and DTH subscribers.
Paramount Channel will make its debut on September 6 and J-One on October 4.
CanalSat is wholly owned by Vivendi and distributes its services via cable, DTH and IPTV.