SIP Phone Question

I have a Cisco phone attached to my Allstar node. I can pick it up dial my own node and connect. That when I start getting SMS notice on my phone every 15-20 seconds. Anyone know the cause and how to get rid of it and make the device function normally??

Likely, What you are seeing is verbose data of the node.
Kinda what you would see if you were just looking at verbose connection data of asterisk in a putty window running asterisk in foreground, but only for the connection.

I would first look at options for your phone to disregard it.
Perhaps advanced setup in menu from ip of the phone.
Disable sms ?

If not, not sure, but you might try to set the default verbosity to 0 in asterisk.
cli> core set verbose 0