Incremental addition and scale-back of resources adapting to network resource availability

An apparatus for managing a first network, the apparatus comprising:

• at least one processor and at least one associated memory, the at least one processor configured to
• receive a notice of an intended communication to a called party network, wherein the intended communication requires a resource for supporting a streaming data protocol in each network between a calling party network and the called party network;
• forward the notice of an intended communication to a second network and toward the called party network;
• in parallel with said forwarding, initiate for the intended communication a determination of resource availability for the first network;
• perform for the intended communication the determination of resource availability for the first network, wherein the at least one processor is configured to query a first resource for the first network for resource availability and receive a first indication of resource availability of the first resource for the first network;
• and
• verify resource sufficiency for the intended communication wherein the at least one processor is configured to receive a second indication of resource availability of at least one resource at the second network which is required for the intended communication.