Cisco ASR 5000 Administration Manual page 70
Ip services gateway
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Also See for ASR 5000:
- Administration manual (466 pages) ,
- Installation manual (294 pages) ,
- Installation procedure (8 pages)
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▀ Rel. 7 Gx Interface
Figure 10.
Table 5. Rel. 7 Gx IMS Authorization Call flow Description
Step
Description
1
UE (IMS subscriber) requests for primary PDP context activation/creation.
2
SessMgr allocates an IP address to the UE.
3
SessMgr requests IMS Authorization, if IMSA is enabled for the APN.
4
IMSA allocates resources for the IP CAN session and the bearer, and selects the PCRF to contact based on the user's
selection key (for example, msisdn).
5
IMSA requests the DPCA module to issue an auth request to the PCRF.
▄ Cisco ASR 5000 IP Services Gateway Administration Guide
70
Rel. 7 Gx IMS Authorization Call Flow
Gx Interface Support
OL-27210-02
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