... 直接通话键 through speaking key 三方通话业务 three-party service 计次制通话业务 measured service ...
基于4个网页-相关网页
The Three-Party Service enables a user to establish a three-way conversation, i. e. a simultaneous communication between the served user and two other parties.
三方业务使用户能建立一个三方通话，即在被服务的用户和另两方之间同时进行通信。
This Recommendation provides the stage 2 service description of the Three-Party supplementary service.
该建议提供三方补充业务的第2级业务描述。
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