Can I filter the service metrics based on remote user ID or server ID?

Yes, we have support for filtering based remote ID which is essentially a remote user ID or server ID. 

1. remote user ID: In scenarios, where the remote user is not monitored by callstats.io and you would like to find the calls based on the remote user ID.

2. server ID: When the servers have unique IDs and you would like to filter the calls by server IDs to analyse the general statistics and load on each server.