BSR call flow resulting in AT&T In-Band Transfer Connect UUI IE

Last Updated : Nov 02, 2016 |

A typical BSR call flow that results in the UUI IE being inserted in the ISDN DISCONNECT message during a successful AT&T In-Band Transfer Connect operation is as follows:

  1. A PRI call from the PSTN switch arrives at the local Avaya Communication Manager and is routed to a VDN that uses a vector to do subsequent BSR vector processing.

  2. The BSR polling vector steps on the local server receive status information from various local skills and remote BSR locations, and identify a remote call center site as the BSR best location.

  3. Call control passes to the interflow VDN selected as the BSR best location specified on the Best Service Routing Application Plan screen.

    For information on administering a BSR application plan, see Call Vectoring methods used with AT&T In-Band Transfer Connect service in the Administering Avaya Aura® Call Center Elite document.

    Important:

    The Net Redir field in the BSR application plan for the remote location must be set to n.

  4. The vector associated with the interflow VDN for the BSR best location includes the following:

    • An announcement vector step that specifies an extension for which a special sequence of DTMF digits has been recorded. The recorded DTMF digits return in-band information about the redirected-to endpoint back to the PSTN. The DTMF digits provided in the announcement are entered from a Touch-tone keypad with the following format:

      *T + PSTN number

      T corresponds to the number 8 button on a DTMF keypad and the PSTN number represents the PSTN endpoint number where the call is redirected.

      Note:

      The phone equipment required to create the announcement is described in About setting up DTMF announcements for the AT&T In-Band Transfer Connect service in the Administering Avaya Aura® Call Center Elite document.

    • A wait-time hearing silence step providing a brief interval to allow sufficient time for the PSTN switch to process the DTMF digits.

    • A disconnect after announcement none vector step. This vector step sends an ISDN DISCONNECT message that includes a UUI IE. The UUI IE contains the Avaya Information Forwarding for the call that is sent to the PSTN switch.

  5. The PSTN switch makes the connection to the specified redirected-to endpoint and releases the B-channel connection with Communication Manager.