Nest <Number> inside <Dial> to create a PSTN B-leg. Use E.164 format for both the destination and the parent callerId.
Set the parent callerId to a Vobiz number owned or authorized by your account. If you omit it, Vobiz derives a number from the existing A-leg, which may not be authorized for the outbound B-leg.
Attributes
Dial an extension after answer
Use sendDigits when the destination expects an extension or IVR selection after answering. Add leading w characters when the destination needs a pause before the first digit.
Vobiz sends DTMF using telephone-event signaling when the media path supports it. The destination IVR or SIP endpoint must support and interpret those events.
Use sendOnPreanswer="true" only when the destination provides early media and expects DTMF before answer. Carrier and endpoint support determines whether the remote system receives and acts on the sequence during early media.
Dial several numbers concurrently
Add sibling <Number> elements to attempt multiple destinations at the same time:
Vobiz bridges the first destination that answers and cancels the remaining attempts. See Simultaneous dialing for callback outcomes.
Next steps
