LTE SMS related KPI

CORE
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1

Hi Experts,
Can we check any LTE SMS related KPI from OSS?

2

Is this SMS over NAS or SMS via IMS?
In former case, check MME documentation and in later case you should check IMS documentation.

3

Thanks. I think signaling indicates over NAS.
But will it use SGs as MME will route to MSC-S.

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Anyone knows how to check SMS traffic in LTE or due to NAS/SGs we have to check from 3G end?