A method may include receiving, via a Session Initiation Protocol (SIP) session over a wireless fidelity (Wi-Fi) channel, a digital audio signal from a remote control configured to receive audible information; terminating, responsive to receiving the digital audio signal, the SIP session; converting the digital audio signal into text based on a number of speech grammars corresponding to program guide information; obtaining, using the program guide information, a matching set of program guide entries related to the text to determine command information corresponding to the audible information; sending, via hypertext transfer protocol or file transfer protocol, the command information to a set-top box; and generating, at the set-top box responsive to receiving the command information, a display indicative of the matching set.