Impact of Rebooting Primary Signaling Server

[SherWat]

I have a CS1000 at 7.6
I have digital sets answering 911 calls
The administrative side of our organization are all IP sets.
I need to reboot our primary signaling server in hopes of fixing a callers list that is not accessible problem.
When I select Reboot from the Base Manager UCM (attached), what will happen?
I feel like the IP sets will go offline, but what will happen to the digital sets?
Thanks.

 

[KCFLHRC]

IP sets registered to that SS will go off line and try and reconnect to the secondary SS if equipped. Digital sets will not be affected. You will also lose single sign on functionality during that time if that is the Primary UCM which I'm sure it is

 

[SherWat]

Thank you KCFLHRC