ICE cast server (“Could not parse XSLT file”). Probably used for MoH streaming, but not setup or managed by FreePBX. It’s why it’s “always” connected because it’s streaming.
Another Russian radio streaming service
Considering your account email ends in “.ru” and these two addresses are Russian Music Streaming services I have to make the assumption that you or someone that works for you setup Music streaming services for Music on your PBX.