| 摘要 |
A method for interconnecting networks is provided. The method includes: transmitting a communication command containing a service ID of a first network side to a first network side; finding out, by the first network side, a service ID of a second network side associated with the service ID of the first network side according to the association between the service ID of the first network side and the service ID of the second network side; and transmitting the communication command containing the service ID of the second network side to the second network side. As a result of the foregoing technical solution, the call, directing to service IDs, between the IMS network and the heterogeneous network as well as between the IMS networks provided by different operators becomes possible; thereby the interconnection between services can be accomplished. Furthermore, an apparatus and a communication system for interconnecting different networks are disclosed.
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