I've always thought of the dual mode clients (e.g. Nokia CallConnect and iPhone Mobile 8.0) and the CUMC clients as separate solutions that suit different user needs, one being ideal for users who are hardly ever in the office, the other for users who "roam" between offices or are mobile withing their office location (mobile phone used as Wi-Fi client).
It seems however that both can co-exist on the same device. Suppose you run both CUCM and Mobile 8.0 on a iPhone. Would the client give priority to WLAN instead dial by office when the client makes a call while in reach of the WLAN? Is this configurable?
Many thanks in advance and best regards