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    • 3. 发明申请
    • METHOD AND APPARATUS FOR USE IN AN IP MULTIMEDIA SUBSYSTEM
    • 用于IP多媒体子系统的方法和装置
    • WO2010088962A1
    • 2010-08-12
    • PCT/EP2009/051404
    • 2009-02-06
    • TELEFONAKTIEBOLAGET LM ERICSSON (publ)GUERRA, RuthHEGARTY, Cormac
    • GUERRA, RuthHEGARTY, Cormac
    • H04M7/12
    • H04M7/123H04M7/128
    • According to a first aspect of the present invention there is provided a method of routing a call from an IP Multimedia Subsystem network to a circuit switched network. The method comprises, at a circuit switched carrier select node of the IP Multimedia Subsystem network, receiving a session establishment request (S1), determining if the request includes a circuit switched carrier identifier (S2), and, if not, identifying a circuit switched carrier for the intended destination of the request (S4), identifying a gateway control node responsible for a gateway node connected to the circuit switched network of the identified circuit switched carrier (S5), including in the request a circuit switched carrier identifier for the identified circuit switched carrier (S6), and forwarding the request towards the gateway control node (S8).
    • 根据本发明的第一方面,提供了一种将来自IP多媒体子系统网络的呼叫路由到电路交换网络的方法。 该方法包括在IP多媒体子系统网络的电路交换载波选择节点处接收会话建立请求(S1),确定请求是否包括电路交换载波标识符(S2),如果不是,则确定电路交换 用于所述请求的预期目的地的载波(S4),识别负责连接到所识别的电路交换载波的电路交换网络的网关节点的网关控制节点(S5),所述网关控制节点在请求中包括用于所识别的电路交换载体的电路交换载波标识符 电路交换载波(S6),并向网关控制节点转发请求(S8)。
    • 10. 发明公开
    • SERVICE DOMAIN SELECTION SERVICE INDICATOR
    • 服务指示器用于选择服务域
    • EP2792117A1
    • 2014-10-22
    • EP11802699.6
    • 2011-12-15
    • Telefonaktiebolaget LM Ericsson (Publ)
    • HEGARTY, CormacANULF, AndreasFALKENÅ, Jonas
    • H04L29/06
    • H04W76/06H04L45/74H04L65/1006H04L65/1016H04L65/1036H04L65/1043H04L65/608H04W76/30
    • A service indication mechanism is described for use by IP Multimedia Subsystem, IMS, codes (201, 204) of an IMS network (106) in routing a terminating call in a network comprising a circuit switched, CS, network (107) and an IMS network (105, 106). On receipt of a Service Initiation Protocol, SIP, message from a second IMS node (202), the SIP message including a called user number associated with the call (A1), a SIP Uniform Resource Identifier, URI, and the call services for the called user from a user profile database is retrieved (A2). A second SIP URI is generated by including a service indicator of the called user in the received SIP URI, the service indicator representing the call services of the called user (A3), the SIP message is transmitted with the second SIP-URI to a third IMS node (204). On receiving the transmitted SIP message, the third IMS node (204) detects whether the service indicator is included in the SIP URI, and applies the service indicator to a plurality of policy rules for indicating whether the terminating call should be routed to the CS network (107) and whether to suppress insertion of a prefix to a CS routing number of the called user. The third IMS node (204) transmits to a CS node (206) a SIP message including the CS routing number without the prefix when a routing policy rule associated with the service indicator indicates suppression of the prefix (B5).