AT&T DEFINITY Generic 3 Manuale Utente

VDN Calls

Issue  4 September 1995

As with other Advanced Vector Routing conditionals, the VDN for a 

goto

 step can 

be specified in three ways: a VDN number, the value “latest,” or the value 
“active.” 

The following section describes which calls are included in the VDN Calls counts 
and which are not.

The VDN call count includes:

■

Incoming trunk calls that route directly to the VDN.

■

Incoming trunk night service calls where the VDN is the night service 
destination.

■

Calls that cover or forward to the VDN if it is the first VDN routed to and the 
call is an incoming trunk call.

■

Already counted calls that are conferenced with counted or not counted 
calls from the same VDN.

The VDN call count does not include:

■

Internal calls to the VDN.

■

Calls that are transferred to the VDN.

■

Calls redirected to their VDN return destination.

■

Conferenced calls previously counted on different VDNs.

The following example shows how the 

counted-calls

 conditional can be used to 

route calls.

If more than 100 calls are active in VDN 1234, the caller will hear busy tone and 
vector processing is terminated. If 100 or fewer calls are active, the call queues 
to split 60.

       1. goto step 3 if counted-calls to vdn 1234 <= 100
       2. busy

3. queue-to main split 60 pri l
4. wait-time 20 seconds hearing ringback
5. announcement 27000
6. wait-time 60 seconds hearing music
7. goto step 5 unconditionally