1 Scope

22.1823GPPCustomized Alerting Tones (CAT) requirementsRelease 17Stage 1TS

The present document specifies the requirements and technical considerations for Customized Alerting Tone (CAT) service in both CS and PS domains, especially additional features for roaming and interoperability support.

This document considers voice and multi-media CAT, so the CAT user may experience favourable songs, multi-media clips or other customized alerting tones.