AT&T 555-230-520 manual VDN Calls, Rolling ASA Routing

Advanced Vector Routing

1.queue-to main split 10 pri h

2.goto step 6 if rolling-asa for split 10 <= 30

3.check-backup split 11 pri h if rolling-asa <= 30

4.check-backup split 12 pri h if rolling-asa <= 30

5.check-backup split 13 pri h if rolling-asa <= 30

6.announcement 10000

7.wait-time 40 secs hearing music

8.goto step 3 if unconditionally

Figure 6-6. Rolling ASA Routing

Step 1 queues the call to the main split. If the main split is currently answering calls within the target time of 30 seconds Step 2 bypasses all of the backup splits and goes directly to the announcement in Step 6. The assumption is that the call will be handled by split 10 within the time constraints. However, if the call is not answered by the time vector processing reaches Step 8, the backup splits are checked at that time.

If the rolling ASA for the main split is greater than 30 seconds, Steps 3, 4, and 5 check backup splits. The call is queued to any of these splits that have a rolling ASA of 30 seconds or less. If the call still is not answered by the time vector processing reaches Step 8, then the backup splits are checked again.

VDN Calls

VDN Calls routing allows you to make routing decisions based on the number of incoming trunk calls that are currently active in a VDN. With the VDN Calls conditional, a vector can be used to limit the number of simultaneous calls made to a particular VDN. For example, if a service agency is contracted to handle 100 simultaneous calls for a client, calls in excess of that number can be routed to a busy step.

When Advanced Vector Routing is enabled, a count of active incoming trunk calls is kept for each VDN. The VDN counter is incremented each time an incoming call is placed to the VDN. It is decremented each time an incoming call is released. A call is considered active in a VDN from the time the call routes to the VDN until all parties on the call have been dropped and the call is released.

NOTE:

The call is counted for the originally called VDN only. When a call is routed to another VDN, the call counter for the subsequent VDN is not incremented. And, the call counter for the original VDN is not decremented.

6-12Issue 4 September 1995