LCCR: in case of SIP overflow route international calls via PSTN. How to let callers know about higher cost and degradation of features (such as no TP video conf or calling line presentation for example)? Would inserting recorded announcement be possible? Example: "Your call cannot be completed as expected and will be routed over the public telephone network with higher cost and less features. Hang up and try later or stay on the line" This refers to Software release 8.6 (UCM).