Summary

Recommendation ITU-T Q.3644 specifies the requirements for signalling network analyses and optimization in voice over LTE (VoLTE) in which the signalling network refers to the network entities and the signalling exchange which are related to telecommunications services. This Recommendation covers the aspects including an overview of a signalling network, requirements for signalling collecting, requirements for signalling network analyses, requirements for signalling network optimization and general security considerations in VoLTE.