SMS Notifications Not Working

SMS Notifications Not Working

I have a Business Notification rule set to Email us whenever a ticket is created with a HIGH priority.  This feature works fine.  I then have another business rule set to SMS us whenever a ticket is created with emergency priority.  The email works great however the SMS feature does not work.  What am I missing?  I have entered our SMS email adddress in the SMS Email ID however we are not getting any text messages when this rule runs.
 
Is this a bug or is something not set properly?

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