| 摘要 |
For a call received by an originating switching node in a cellular telephone network that does not support all upgraded calling service features, the call is redirected and transited for further handling to an upgraded service switching node. Alternatively, the call is redirected and transited only when the originating switching node has not been ungraded to support subscripted to calling service features or a certain initiated calling service feature. As another alternative, the call is handled by the originating switching node (i.e., through connected to a service switching node) up until such time as a calling service feature is initiated, and is then redirected and transited if the initiated calling service feature is not supported. |
