I don't know much about the miran card but we have 8 channels 0-6 are currently assigned. We currently have 3 recorded ran messages and are assigned as follows: 0,1,2-ran1, 3,4-ran2 5,6-ran3. We wanted to add an additional ran message but seems we are out of channels. I'm not exactly sure what channel 7 is being used for - maybe our on hold music which we have a cd player for. is adding another ran message possible? does each ran message need this many channels? i'm not sure how that all works. We have symposium express so if we can move channels around how do we do set the routes in symposium? sorry for all the questions and thanks in advanced. by the way we have a Miran III.