PTT no-quota Limited Pass
This feature allows the subscriber to use the network while waiting for the response from OCS. The Limited-Pass configuration allows to specify the Volume which the subscriber can consume while waiting for the quota-response from OCS. The usage is accounted in the respective charging bucket and is adjusted against the next-quota allocation.
Use the following CLI commands to enable the feature:
configure
active-charging service service_name
credit-control
pending-traffic-treatment noquota limited-pass volume volume
end
Limited Pass Volume is used only for noquota case (Rating Group (RG) seeking quota for the first time) and not for quota-exhausted . Limited Pass Volume isn't used for subsequent credit requests.
The traffic is allowed to pass until the Limited-Pass Volume gets exhausted. The usage is counted in the respected charging-bucket and adjusted against the "Quota" granted. If the "Quota" allocation is less than the actual usage, immediate reporting towards OCS with the usage-report occurs requesting for more quota allocation. The subsequent incoming packets are handled as per the "quota-exhausted" PTT configuration.
If the Limited Pass Volume is NOT exhausted before the OCS responds with denial of quota, traffic is blocked after the OCS response. The gateway reports usage on Limited-Pass Volume in next SX_SESSION_REPORT_REQUEST.
If the Limited Pass Volume is exhausted before the OCS responds, then the subsequent incoming packets for the session are dropped until quota is granted from OCS.
The default pending-traffic-treatment for noquota is Drop. The default pending-traffic-treatment noquota command removes any Limited Pass Volume size configured.