Obi Blue Tooth

Ordered an Obi Blue Tooth adapter, and paired one of my cell phones, so I could receive cell calls on my home phones.
I have a 202, with two separate phone systems
incoming calls from SP 1-4 ring both systems
SP1 is default outgoing

I do not wish to hear two short rings for text messages
I have all four SP's configured

Do I need to uncheck X_SMSNotify for all four SP's?
(using Obitalk portal, the choices are Device default, and OBiTALK
Settings)

I realize I can find out by trial and error, but I am curious as to how the text msg notification is processed

EDIT - apparently only SP1 needs X_SMSNotify to be unchecked,
so I assume the default outbound SP is the only SP that needs to be checked?