Cisco Cisco Packet Data Gateway (PDG)
SaMOG Local Breakout
▀ Local Breakout - Enhanced
▄ SaMOG Administration Guide, StarOS Release 19
78
AAA Indication
APN
Received
Received
Matching APN with LBO in the
Local Configuration
Local Configuration
LBO/GTP Call Decision
Yes
Yes
LBO session established with received APN.
Prepaid LBO Support
The SaMOG Gateway also supports Local Breakout (LBO) that enables time- and quota-based control to support
prepaid subscribers. SaMOG interfaces with the Enhanced Charging Services (ECS) using the Gy interface for prepaid
subscribers, and AAA for voucher-based subscribers. LBO for prepaid subscribers is supported on both PMIPv6 and
EoGRE access types.
prepaid subscribers. SaMOG interfaces with the Enhanced Charging Services (ECS) using the Gy interface for prepaid
subscribers, and AAA for voucher-based subscribers. LBO for prepaid subscribers is supported on both PMIPv6 and
EoGRE access types.
When a GTP session with the local P-GW or GGSN is set up, the local P-GW or GGSN service communicates with
ECS to obtain the time and quota limits of the subscriber by having the Gy interface forward the CCR-I message to the
Diameter Credit Control Application (DCCA) server to establish connection. Until the time or volume quota is reached,
the local P-GW or GGSN forwards the CCR-U message to DCCA in order to refresh the permitted time or volume
quota allowed. When the UE terminates the session, the internal P-GW forwards the final service usage to ECS, and
SaMOG completes the session.
ECS to obtain the time and quota limits of the subscriber by having the Gy interface forward the CCR-I message to the
Diameter Credit Control Application (DCCA) server to establish connection. Until the time or volume quota is reached,
the local P-GW or GGSN forwards the CCR-U message to DCCA in order to refresh the permitted time or volume
quota allowed. When the UE terminates the session, the internal P-GW forwards the final service usage to ECS, and
SaMOG completes the session.