The counted-calls conditional allows a vector to limit the number of simultaneous calls directed 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.
VDN Call counts follows the rules used for other Advanced Vector Routing conditionals to specify the VDN in a goto step:
A VDN number.
The value designated as latest. The latest VDN is the VDN currently processing the call. The latest VDN is not affected by VDN override settings.
The value active. The active VDN is the VDN of record, which is the called VDN as modified by override rules. For example, if a call routes from a VDN with override set to yes then the new VDN is the active VDN. If a call routes from a VDN with override set to no, the previous VDN is the active VDN.
When Advanced Vector Routing is enabled, a count of active incoming trunk calls is kept for each VDN. The VDN counter increments each time that an incoming call is placed to the VDN and decremented each time that an incoming call is released. A call is treated as active in a VDN from the time the call routes to the VDN until all parties on the call are 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 does not increment, nor does the call counter for the original VDN decrement.
The VDN Call count includes the following types of calls:
Incoming trunk calls routed directly to the VDN.
Incoming trunk night service calls in which 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, unless they are a SIP transfer and the Suppress Target VDN counted-calls? field is set to n.
Calls that are redirected to their VDN return destination.
Conferenced calls that were previously counted on different VDNs.
