文档介绍：CAMEL3
标准介绍
上海贝尔有限公司NAD
CAME3标准
ETSI TS 122 078
ETSI TS 123 078
ETSI TS 129 078
网址
ETSI TS 123 078
Circuit switched call control
USSD to/from gsmSCF
GPRS interworking
Short Message Service
SS Notifications
Mobility Management
Control and interrogation of subscription data
Subscriber Location and State retrieval
Operations and procedures
功能结构图
网络节点的功能
HLR:
存放用户O-CSI,D-CSI,T-CSI,VT-CSI,TIF-CSI信息
O-CSI, D-CSI, VT-CSI send to VLR
O-CSI, T-CSI send to GMSC
GMSC,MSC:
收到HLR送来的O/T-CSI,标识着GMSC/MSC要请求gsmSSF的指示
监视呼叫状态,通知gsmSSF
VLR:
在用户漫游时,在VLR中作为用户数据的一部分,存放用户O-CSI, VT-CSI, TIF-CSI
DP类型
DP: Detection Point
三种DP
Trigger Detection Point – Request (TDP-R)
Event Detection Point – Request (EDP-R)
Event Detection Point – Notification (EDP-N)
DP的配置机制Arming
配置原则:
静态配置
DP for mobile terminating call handling is statically armed in GMSC/VMSC as result of T-CSI/VT-CSI delivery from HLR/VLR.
DP for forwarding leg handling is statically armed in GMSC as result of O-CSI delivery from HLR.
DP for mobile originating call or forwarded leg handling is statically armed in VMSC as result of O-CSI delivery from VLR.
动态配置
A DP is dynamically armed by the gsmSCF within the context of a CAMEL control relationship (between the gsmSSF and the gsmSCF).
DP的配置取消机制Disarming
DP配置取消原则
A statically armed DP is disarmed when a O-CSI, T-CSI or VT-CSI is withdrawn in the HLR. Only TDP-Rs can be disarmed using this mechanism.
If an armed EDP is met, then it is disarmed.
If an EDP is met that causes the release of the related leg, then all EDPs related to that leg are disarmed.
If a call is released, then all EDPs related to that call are disarmed.
If an EDP is met, then other EDPS are disarmed, in accordance with the implicit disarming rule table.
If an EDP is armed, it can be explicitly disarmed by the gsmSCF by means of the RequestReportBCSMEvent information flow.
Criteria匹配标准
Criteria at DP Collected_Info
Destination number triggering criterion: HLR存放最多10个目的码和/或最多3个号码长度,可以设为“enabling”