So we were presented with an interesting question. Can we use the Audio Test Service on the mobile client. When I tried to search for the object on my Windows Phone it didn’t find anything (I’ll be honest, could be searchable from other mobile platforms but I didn’t test it) but we came up with a pretty simple solution to ensure we could do this.
Step 1: From your fat client, make a call to the Audio Test Service and add the user to your contact list.
Step #2 – Go to your Windows Mobile Client and there it is.
Simple solution but handy to be able to make/call the Audio Test Service before making SfB Calls over the carrier network.