You can use QSIG or DCS with Reroute using ISDN SSE for path replacement for calls in a queue. For calls that are waiting in a queue or in vector processing, even if the call is not connected to an answering user, Communication Manager can attempt a path replacement to find the optimum path for the call.

The queue-to best command is used in BSR to initiate a QSIG path replacement for a call. The following scenario can take place:

If the terminating Communication Manager server receives a Path Replacement Propose operation for a call that is in a queue or in vector processing, Communication Manager immediately initiates path replacement using the path replacement extension if the Path Replace While in Queue/Vectoring field is y and the Path Replacement Extension field has a valid entry. The fields are available on the ISDN Parameters page of the Feature-Related System Parameters screen.