I am trying to setup virtual extension that will forward a call to an external number. Every time I dial the number I get a "Call Transfer Failed" message. From suggestions in other posts I have added an outbound rule by adding a prefix to the external number but I still cannot get it to work. In the extension settings I have: Forward All -> All Hours -> All Calls -> Forward to External Number 9xxxxxxxxx The nine (9) is the prefix for the outbound rule. If calls are forwarded using the cfwd feature of the phone, the forwarding of calls works perfectly, but I need virtual extension for different external numbers. Any ideas of what could be wrong??