AT&T 555-230-520 manual

Look-Ahead Interflow

4.If the oldest call waiting time is less than 60 seconds, step 4 accepts the call and queues it. ADR then connects the call through to the receiving PBX/ACD.

5.Steps 5-7 provide ringback, announcement, and music to the caller.

If the vector at location A rejects the call by sending a busy indication back to the network over the ISDN-PRI link, ADR reroutes the call to location B, which must accept the call. If location B is closed or too busy to take the call, location B can use Call Vectoring and Look-Ahead Interflow to check other locations. If other locations exist and can take the call, location b can forward the call. If other locations do not exist or cannot take the call, location B can use Call Vectoring to route the call to location A. If location A is not open, location B can use Call Vectoring to provide an announcement or busy tone to the caller.

8-14Issue 4 September 1995