Entitlement management message transmitting system and method thereof in use of out of band

This EMM transmission system and method using an out-of-band channel is provided. To this end, CAS (Conditional Access System) viewing of the client credentials EMM associated with (Entitlement) (Entitlement Management Message) the OOB (Out of Band) transmission over the channel and, ECM (Entitlement associated with the key assigned to each of the CAS client Control Message) an IB (In-Band) transmitting CAS (Conditional Access System) server through the channel; And to then encrypt the ECM occurs in the CAS server, to scramble transmitted to, EMM in real time by including a broadcast stream encoding apparatus then suitably modulated for transmission via the IB channel, transmitted by IB channel and the EMM transfer for feedback information on the success / failure / error, you can perform two-way communication to the CAS client. Out-of-band channel broadcast stream, CAS