Systems and methods to select peered border elements for an ip multimedia session based on quality-of-service

A system to assign a communication session to one of a plurality of peered border elements associated with a service provider, the system comprising:

• a telephone number mapping database to store a list of at least some of the peered border elements in the plurality of peered border elements;
• an operations support system to prioritize the peered border elements in the list based on a respective status of the peered border elements;
• and
• a call server to select one of the peered border elements to handle the communication session based on the prioritized list and a plurality of Quality-of-Service parameters associated with the communication session.

A method to process a communication session, the method comprising:

• receiving a call signal message;
• accessing a prioritized list of peered border elements;
• determining a composite Quality-of-Service result from a plurality of Quality-of-Service parameters;
• and
• selecting a peered border element from the prioritized list of peered border elements based on the composite Quality-of-Service result.