FIELD: radio engineering, communication.
SUBSTANCE: mobile communication method includes the steps of: sending "INVITE" from UE # 1 to P-CSCF/VATF in the guest network of UE # 1; sending "INVITE" from P-CSCF/VATF to IMS; and extracting MGW # 1 to the voice communication channel via P-CSCF/VATF.
EFFECT: preventing the waste of the media gateway resource.
4 cl, 7 dwg
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