I'm not completely clear what you have configured there, primarily because you're not referencing the same terminology, i.e., field names, as in an Obi interface configuration screen.
However, as a best guess, what is the setting for the field X_InboundCallRoute on SP2? Find it at SP2 Service > X_InboundCallRoute > It should be "ph2".
Based on the behavior you describe it sounds like you now have it at "ph,ph2" (which is also the default setting), which is the setting to route an inbound call to phone port 1 (ph) and phone port 2 (ph2). Note that for these settings "ph" and "ph1" mean the same thing.