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This article includes information on functional capacity that could be configured within the VCS system for different versions.
Capacity allows to define a limit to the number of simultaneous active calls, routing rules or client/reseller's activities. When you set a capacity, the system doesn't allow passing a call once the specified amount is reached. Capacity works on the basis of RADIUS START/STOP packets.
Before moving on, it's required to integrate the VoIP Gateway via RADIUS and enable the Track active calls option in the RADIUS Server settings (see screenshot).
Screenshot: VoIP Gateways settings
Within the VCS system, you can set up a respective capacity for the Client, Reseller, Accounts and Routing Rules.
Here, you can find 4 levels of limitation arranged in a hierarchy:
Therefore, if you limit the account capacity up to 100 and сlient capacity up to 10, the second limitation concerns the capabilities of the client and gets stronger bounds.
Here you can get more details about how VCS processes a call.
To set up the capacity for routing rules properly, the CALL-ID in the SIP invite packet and CONF-ID in the RADIUS packet must be the same.
The number of client's calls is calculated within the system on the basis of received START packets. If there are two START packets, it represents two active calls for client.