So I think you mean....
VoIP to VoIP calls are effectively free anyways, but if your WAN links goes down then it will switch to ISDN.
All external calls will still be required to use the ISDN links though? Or can you just somehow switch it to a normal landline?
Does that make it a little clearer what i'm talking about? How do the make completely external phone calls, from a VoIP phone. For example, ringing your house from work..
VoIP to VoIP calls are effectively free anyways, but if your WAN links goes down then it will switch to ISDN.
All external calls will still be required to use the ISDN links though? Or can you just somehow switch it to a normal landline?
Does that make it a little clearer what i'm talking about? How do the make completely external phone calls, from a VoIP phone. For example, ringing your house from work..