Hi All, I am planning to setup an IP PBX that relies primarily on a SIP trunk to an ITSP with a range of DDI's. My fear is that one day, my internet connection will fail and I will stop receiving inbound calls on those numbers. Sure I can use a PSTN VOIP gateway to place outbound calls but that doesn't help my customers trying to dial in. I am interested to learn how people out in the real world are overcoming these issues. I know that even the PSTN cannot be 100% resilient but I want to provide the best availability I can with as much fail over automation as possible Thanks in advance for your thoughts guys!!