The receiver you have, it have to have that feature, none of the receiver that are sold for IPTV have that capability, and I know that because I am hearing Impaired and when I got my vixo2 found that does not do c.c., I send an e-mail to where I bought it, and they said they were working on an app. for that purpose, but never materialize, on the Dreamlink T6 has c. c. but I do not know if it work only with the iks or both.