| 摘要 |
A multi-mode mobile station includes a first interface for wireless communication with a wireless local area network (WLAN) and a second interfa ce for wireless communication with a wireless wide area network (WWAN). The mul ti- mode mobile station is associated with a particular conference bridge, throu gh which all calls to and from the multi-mode mobile station are routed. For example, when a call involving the multi-mode mobile is established via the WLAN, the call includes a WLAN call leg that extends from the conference bridge to the multi-mode mobile station via the WLAN. To effect a handoff during the call, a WWAN call leg is established between the multi-mode mobil e station and the conference bridge via the WWAN. The conference bridge bridge s the WLAN and WWAN call legs. To complete the handoff, the multi-mode mobile station drops the WLAN call leg and continues the call using the WWAN call l eg.
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