If "Your Number" is '1212xxxxxxxx', you would have to specify a provider to the right of it that is capable of calling that PSTN number.
If "Number to Dial" is '1747xxxxxxxx', you would have to specify Sipphone or Sip Broker as the provider to the right of it. Sipphone numbers (area code 747) are not real PSTN numbers and can only be reached via Sipphone or Sip Broker as the provider.
I just tried the above scenario (using both variations of "Number to Dial") and everything worked as expected.
You should be able to use most any combination of providers on Web Callback assuming the number to the left of the selected provider is capable of being reached through that provider.
Ron
|