Grafana dashboard SIP Error Rates seems too limiting?

[pekkaar]

Hi everyone,

I am a happy user of the HOMER 7 Docker Containers package and the Grafana dashboards by @lmangani rock! I am not a Prometheus expert at all, but one particular dashboard however seem to contain no data data while I believe it should: SIP Error Rates.

For example the INVITE Server Errors (50.*) shows this, with this PromQL:

And the part that puzzles me about this query is this:

and sum by(target_name) (rate(heplify_method_response{method="INVITE", response="INVITE"}[10m])) > 0.2

Why is this in the query?

The same goes for the final > 1 filter as well. Why are these filters in there?

Removing them produces this for my recent calls:

Something that immediately tells me there were in fact a few 50.* instances... ?

Many thanks for any insights, I am learning PromQL.