@McDVOICE wrote: Current status of this query ...   The original question "What is the cause of this failure?" has not been answered.   TPG suggested that the overseas callers request assistance from their local telecom providers. The result ... the overseas telecom providers suggested that we request assistance from TPG.   Note that the intercept message is spoken in English with an Australian accent. This suggests that the message originates somewhere in Australia.   Messages from providers in other countries are typically spoken in the local language e.g. callers from Germany would hear messages in German, callers from Greece would hear messages in Greek etc.   Surely someone somewhere must understand where this message comes from and what it really means. If it means there is congestion on the lines, it should say that.  If it means some ofther kind of failure it should explicitly say that. To say that the number is not available is misleading, because callers can connect at other times.   Any further comments from TPG? Thanks. Happy to hear that! Your comment made mine. ... View more