Henning Westerholt writes:
ah, i think we get this from a custom header
extensions added from
the UA (FritzBox). It measures the time from the sended INVITE to
the first received
this does not measure "call setup time", i.e., invite in-out from
proxy.
provisional response or 200 OK. Not sure if you've
this UA in your user set.
Another option that i got from the german version is that is possible to use
some external monitoring, i.e. just do some sampling.
yes, you can use a monitoring tool that sends requests to proxy and then
calculates availability and blocking.
-- juha