Cisco ASR 5000 Administration Manual page 56

Gx Interface Support
▀ Rel. 7 Gx Interface
Figure 8. PCC Logical Architecture
Within the Gateway, the IMSA and DPCA modules handle the Gx protocol related functions (at the SessMgr) and the
policy enforcement and charging happens at ECS. The Gy protocol related functions are handled within the DCCA
module (at the ECS). The following figure shows the interaction between components within the Gateway.
▄ Cisco ASR 5000 IP Services Gateway Administration Guide
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