Rohde & Schwarz demonstrated a cost-effective way to verify SMS over IMS at LTE North America 2011. The R&S®CMW500 wideband communication tester emulates an LTE network and is connected to an IMS server software application. A commercially available LTE USB dongle registers to the R&S®CMW500 and to the IMS server. For demonstration, a mobile terminated SMS is being send over the active connection.