With AIX single system image (SSI), you do not need to install WebSphere Voice Response Java and VoiceXML Environment on the SSI server but you must install it on the clients, as shown in Figure 1.
On SSI all the voice files are shared, so the segments installed on each client node must be the same. For example, if you had a voice segment called 'Hello', it must the same voice segment, with the same name, on each client.