Methods and apparatus for predictive call admission control within a media over internet protocol network

A method, comprising:

• receiving, at a first session exchange device, historical call admission control (CAC)-related information from a second session exchange device, the historical CAC-related information being associated with a non-predictive time period and an endpoint in communication with the second session exchange device, the first session exchange device being disposed at a first border location of a session over internet protocol network, the second session exchange device being disposed at a second border location of the session over internet protocol network, the CAC-related information including at least one of a CAC value, a CAC-metadata value, or a CAC condition;
• calculating, during a predictive time period and at the first session exchange device, a predictive-CAC value associated with the endpoint in communication with the second session exchange device based on the historical CAC-related information, the predictive time period being a period of time after the non-predictive time period when historical CAC-related information associated with the specified time or period of time is not available;
• and
• predicting whether or not the second session exchange device can accept a call during the predictive time period based on the predictive-CAC value.

A method comprising:

• receiving, at a first session exchange device, historical call admission control (CAC)-related information from a second session exchange device, the CAC-related information being associated with an endpoint in communication with the second session exchange device, the first session exchange device being disposed at a first border location of a session over internet protocol network, the second session exchange device being disposed at a second border location of the session over internet protocol network, the CAC-related information including at least one of a CAC value, a CAC-metadata value, or a CAC condition;
• calculating at the first session exchange device, a predictive-CAC value associated with the endpoint in communication with the second session exchange device based on the CAC-related information;
• wherein the predictive-CAC value is a first predictive-CAC value, the calculating includes calculating at a first time during a predictive time period, the first predictive-CAC value is a valid value during a portion of the predictive time period;
• and
• the method further comprising:
• calculating at a second time during the predictive time period a second predictive-CAC value, the second time being after the portion of the predictive time period, wherein the CAC-related information is associated with a non-predictive time period, the calculating includes calculating during a predictive time period after the non-predictive time period, the predictive time period is triggered when a duration of a data-transfer-interval exceeds a threshold time period, the data-transfer-interval begins at the first time.

A method, comprising:

• receiving, at an ingress session exchange device, call admission control (CAC)-related information associated with at least one of a first endpoint of a first egress session exchange device or a second endpoint of a second egress session exchange device, the CAC-related information including at least one of a CAC condition or a CAC value, the ingress session exchange device being at a border of a session over internet protocol network, wherein the CAC-related information is associated with a non-predictive time period;
• calculating a predictive-CAC value based on the CAC-related information that is valid during a predictive time period being after the non-predictive time period when the CAC-related information associated with the predictive time period is not available;
• and
• defining a session request for at least one of the first egress session exchange device or the second egress session exchange device based on the predictive CAC-value.