| 摘要 |
A method for establishing an intra-network call between a first subscriber (102), which is served by a first call control node (323) in a visited public land mobile network, V-PLMN (320), and a second subscriber (101 ) of a home public land mobile network, H-PLMN (310), which is different to the V-PLMN (320), and wherein the second subscriber (101 ) is served by a second call control node (324) of the same V-PLMN (320), comprising the steps of: - sending, by the first call control node (323), a call setup message to a gateway node (322; 900) in the V-PLMN (320) which is adapted to perform re-routing of calls to another network; - requesting, by the gateway node (322; 900), routing information of the second call control node (324) from a proxy location register, PLR (321; 800), in the V-PLMN (320); - routing, by the gateway node (322; 900), the call to the second call control node (324) if routing information towards the second call control node (324) is available from the PLR (321; 800). |
