Cisco Cisco Tunnel Terminating Gateway (TTG) Guide De Dépannage
Enhanced Charging Service Overview
▀ Credit Control Application (CCA) in ECS
▄ Cisco ASR 5000 Series Enhanced Charging Services Administration Guide
OL-22951-01
Figure 9.
Prepaid Charging in GPRS/UMTS/CDMA-2000 Networks
E S S
In te rn e t
1
2
R a tin g
6
7
B illin g S y s te m
D a ta W a re h o u s e
c re d it D B
5
3
1 0
4
S y s te m ru n n in g E C S
R A D IU S /D C C A
9
8
1 0
Step 1
Subscriber session starts.
Step 2
System sends request to CCA for subscriber’s quota.
Step 3
CCA sends request to Data Warehouse (DW) credit quota for subscriber.
Step 4
Credit Database in DW sends pre-configured amount of usage limit from subscriber’s quota to CCA. To reduce the
need for multiple requests during subscriber’s session configured amount of usage limit a major part of available credit
quota for subscriber is set.
need for multiple requests during subscriber’s session configured amount of usage limit a major part of available credit
quota for subscriber is set.
Step 5
CCA sends the amount of quota required to fulfill the subscriber’s initial requirement to the system.
Step 6
When the initial amount of quota runs out, system sends another request to the CCA and the CCA sends another portion
of available credit quota.
of available credit quota.
Step 7
Subscriber session ends after either quota exhausts for subscriber or subscriber terminates the session.
Step 8
CCA returns unused quota to DW for update to subscribers Credit DB.
Step 9
EDRs and/or UDRs are periodically SFTPd from system memory to the ESS, if deployed or to billing system directly as
they are generated. Or, if configured, pushed to the ESS at user-configurable intervals.
they are generated. Or, if configured, pushed to the ESS at user-configurable intervals.