VoLTE: and we really thought new services were going to be simpler to manage

Elementary, my dear Watson

Early VoLTE rollouts presented a number of challenges for service providers, including VoLTE call drops due to timeout. This particular issue appeared to be IMS related, but the Core/IMS team could not identify its root cause. IMS had just been deployed, so the inability to pinpoint exactly where the issue lay was attributed to lack of knowledge.

The mystery was solved after considering data from the radio access network (RAN). It then became evident that the VoLTE call timeout was a RAN issue, caused by noncontiguous radio coverage when users moved between cells. To resolve the matter, the RAN and Core/IMS teams simply had to communicate and correlate data across network domains. Elementary, one would say … Keep reading the original blog here 

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