Binds the carrier's real SDK onto the driver.
The driver configuration — build it with BuildTelephonyCallConfiguration.
The agent identity (the DID the agent answers on, and the agent it pins).
The capacity slot the call already holds; the starter owns releasing it.
The other party's number: the caller (inbound) or the number being dialled (outbound).
Resolves the seeded carrier provider row (called after the engine's metadata is loaded; may throw when it is missing).
One call to start.