| 摘要 |
The invention relates to a method, a system, a program and a computer program product for routing a message, wherein a second operator's (120) subscriber(s) is directly reachable by a first operator (110), wherein a third operator's (130) subscriber(s) is directly unreachable by the first operator (110), wherein the first operator (110) receives a routing information from a broker transit operator (140), wherein the message is routed according to one out of a first routing alternative and a second routing alternative, wherein the first routing alternative comprises the message being routed from the first operator (110) to the second operator (120), wherein the second routing alternative comprises the message being routed from the first operator (110) to the broker transit operator and from the broker transit operator to the third operator (130), wherein the choice between the first routing alternative or the second routing alternative is dependent on the routing information.
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