AT&T 555-230-520 manual

Call Vectoring Commands

■Calling number information. DNIS number provided by ISDN-PRI facilities, or by the administered destination for other trunk facilities. If the call originates from a local switch extension, this extension is the number dialed (after digit translation).

■Called number. Originally called extension (if a call is forwarded to a VDN), or the first VDN through which the call was routed (if the call was not forwarded to the VDN).

■Routing VDN. Last VDN that routed the call to the vector that contains the adjunct routing command.

■Call identifier. ASAI identifier that permits the ASAI adjunct to track multiple calls via either Event Notification or Third Party Call Control. (See DEFINITY Communications System Generic 3 Feature Description,

555-230-204 or Generic 3 CallVisor ASAI Technical Reference for more information on ASAI.)

■Look-Ahead Interflow information (if any). Includes the original VDN display information and the priority level of the call at the originating switch. (See Chapter 8.)

■Digits collected via Call Prompting (if any). Digits are collected by the most recent collect digits command. (See Chapter 5.)

If the call is queued, the adjunct routing step is ignored, and vector processing continues at the next vector step.

If the ASAI link specified in the adjunct routing step is down, the step is skipped.

An ASAI link failure can change the manner in which subsequent treatment (that is, announcement and/or wait-time) steps (if any) in the vector are usually processed. In some cases, such processing is influenced by the position that the treatment steps occupy in the vector. In other cases, the positioning of these commands along with their relationship to specific goto commands come into play. For example, any announcement or wait-timestep that immediately follows an adjunct routing step whose ASAI link is down is skipped.

NOTE:

The second step after the adjunct routing step is often implemented as a default treatment (for example, a route-to an attendant). If the ASAI link is down, the default step executes immediately. Otherwise, the step executes only if the application does not respond with a route within the time period specified by the wait-timestep.

On the other hand, if a goto step follows such an adjunct routing step, the switch executes the goto step and then skips various treatment steps according to their position in the vector and based on the performance of the goto step.

Specifically, if the goto step succeeds, the switch skips any announcement or wait-timestep that is the first non-gotostep branched to by the goto step.

A-16Issue 4 September 1995