Utilization of stored of personalized information and communication preferences in a profile in a STB in a structured format or via cookies allows at least a combination of feature rich telephony applications, with the personalized data stored in STBs facilitating feature rich communications sessions. Providing advanced multimedia communications applications using personalized data resident in STBs could allow an entity to provide, for example, many previously unavailable services, and therefore provide considerable new business potential. The personal information stored in the STB can convey many exemplary benefits, such as communication preferences, alternate contact modalities, payment preferences, priority preferences, trusted contacts, personal information, as well as multimedia messaging, etc. The integration of the personal information with the intelligent personal agent also enhances the user experience.