Well, for this especific case the distro doesn’t matter, you are creating your call file without a context. So assuming that you create the ring group using the GUI and is the 602 then your local channel should be:
It will still fail if your Data for the playback doesn’t exist.
In the other hand ELASTIX and FreePBX based asterisks systems not work like vanilla asterisk, there is a lot of complex logic in the dialplan. Besides that when you define a Local channel you always MUST set the context or it will use the default one, so even with the vanilla asterisk that will fail too.