| 主权项 |
1. A method of routing a terminating call in a network comprising a circuit switched, CS, network, a packet switched, PS, network, and an IP Multimedia Subsystem, IMS, the method, performed by a subscriber server, the method comprising:
receiving a request for routing information in relation to the terminating call from a CS node in the CS network; determining whether a user equipment, UE, associated with the terminating call is registered in the IMS and whether the UE has access to the PS network; instructing the CS node to route the terminating call in the CS network when the UE is not registered in the IMS or when the UE does not have access to the PS network; and instructing the CS node to send the terminating call to the IMS for handling when the UE is registered in the IMS and when the UE has access to the PS network, wherein a user associated with the terminating call has multiple UEs within a same subscription in the IMS, wherein said determining is performed, for each UE, to generate a first set of UEs to be served by the CS network and a second set of UEs to be served by the PS network, wherein instructing the CS node to route the terminating call in the CS network is performed when there are one or more UEs in the first set of UEs, wherein instructing the CS node to send the terminating call to the IMS for handling is performed when there are one or more UEs in the second set of UEs, and wherein determining whether each UE has access to the PS network further includes confirming that a current access type of each UE is PS access and that each UE has IMS voice over packet switched, VoPS, support. |
