Sequential Ring is a Sonictel user level feature that allows a user to create a list of up to 5 additional numbers (six total) to ring in a specific order when they receive an incoming call. 

Specific criteria must be assigned to activate the feature. 

The criteria for each Sequential Ring entry can be calls from any number or be a list of up to 12 phone numbers or digit patterns, a specified time schedule, and a specified holiday schedule. 

All criteria for an entry must be true for Sequential Ring service to be used.