| 摘要 |
The present invention discloses a method and a system for call termination anchoring of CS (Circuit Switching) domain, the method including the following steps: when a call coming from CS domain network reaches the mobile switch center in the home circuit switched domain of a voice call continuity subscriber, the mobile switch center sends a LOCREQ message to a home location register to query a location; Step 2, the home location register directly sends a message to the voice call continuity application server to request routing information; and Step 3, the voice call continuity application server returns IP multimedia subsystem routing number information associated with the voice call continuity application server to the home location register to make the call can be anchored to the voice call continuity application server. The present invention realizes call termination anchoring for a VCC subscriber in the circuit domain without intelligent network services. |
