In some implementations, a telecommunications network can include an anchoring network device. The anchoring network device can receive, from a first party of a communication session, a service message including information of a first session attribute and associated with identification information of a party of the communication session. The anchoring network device can retrieve, from an authorization registry, authorization information corresponding to the identification information. In response to the authorization information indicating the first capability is not permitted, the anchoring network device can determine a status message based at least in part on the service message and transmit the status message via a communications interface. The status message can include a service-failure message or a second service message including information of a second, different session attribute.