Homer7-prom stack - Network effectiveness ratio BY number

[3klips]

Hello guy,

I'm running in my lab the Homer 7 stack with prometheus, timescale-postgress.
With Grafana connected to Prometheus, I can have a great graph of the NER (Network effectiveness ratio), you can filter this graph by node.

My challenge is to have the same report filtered by calling or called number filter.

How would you resolve this as the calling/called number is not part of the Prometheus database.
Using homer API?

Thanks!
Enric