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

A communications network device, comprising:

• a processor;
• and
• a memory including computer readable instructions which, when executed by the processor, cause the processor to perform operations comprising:
• selecting a peered border element to handle a communication session based on a list of peered border elements and a first composite quality-of-service parameter of the communication session, the list of peered border elements being prioritized based on respective statuses of the peered border elements in the list, the first composite quality-of-service parameter being based on weighted quality-of-service parameters of the communication session including a grade of service parameter of the communication session and a preferred mode of communication for a voice over Internet protocol device of a called party in the communication session, the grade of service parameter including an attempted performance range and an expected performance range of the communication session, the grade of service parameter being based on a level of service for the communication session, and the preferred mode of communication indicating one of multiple devices at which the called party prefers to be reached;
• and
• controlling a second server to generate a quality-of-service authorization token to reserve network resources associated with the selected peered border element.