Abstract: A telecommunications system utilizes switched video technologies to deploy video programming over a second conditional access system (CAS) in parallel with video programming broadcast over an incumbent CAS. The programming content is switched onto the second CAS only when requested by a subscriber, thus the content deployed over the second CAS occupies a fraction of the transport channels the first CAS occupies. A full channel lineup can be simulcast using a fraction of the traditional CAS bandwidth. This arrangement permits subscriber set top boxes to be configured for either the traditional CAS protocol or the second CAS protocol. In one embodiment, the second CAS programming content is simulcast in parallel with the traditional programming content using spare transport channels in the existing RF spectrum. Thus, the cable television operator can incorporate the SDV technology and second CAS without replacement of or disruption to the traditional CAS equipment.