Call prioritization in a communication network

A call control system comprises a communication interface and a processing system. The communication interface is configured to receive a first access request from a communication system requesting access to a voice service. The communication interface is configured to, in response to receiving the first access request, transfer a rejection to the communication system that indicates that the voice service is not available. The communication interface is configured to, in response to transferring the rejection, receive a first call request for a priority service from the communication system. The processing system is configured to process the first call request to determine if the first call request indicates the priority service. If the first call request indicates the priority service, then the communication interface is configured to transfer a second access request to a communication network in response to the first call request. The communication interface is configured to, in response to transferring the second access request to the communication network, receive a first successful response from the communication network. The communication interface is configured to, in response to receiving the first successful response, transfer a second call request to the communication network.