If Star Trek communications worked like real world audio/video communications:
Uhura: Captain, the Klingon vessel is hailing us.
Kirk: Lt. Uhura, have we installed the Klingon video and audio codecs?
Uhura: Yes, captain, but they've updated their protocol since our last hail.
Captain: Mr. Spock, install the software for their new protocol.
Spock: Unfortunately, Captain, the new protocol has not been ported to Federation OS.
Captain: Just fire phasers on the Klingon vessel!