| 摘要 |
A system and method of synchronizing visual indicators in digital telephone including at least one attached auxiliary device. Visual indicators on the base telephone and the auxiliary device are first set to an initial state. Later, as various telephone features are activated, corresponding ones of the visual indicators on the base telephone and the auxiliary device are operated at predetermined cadences. When the cadence control mechanism (and thus the visual indicators) of the base telephone reaches a predetermined state, a state machine in the base telephone sends a synchronization message to the auxiliary device and then continues to operate the visual indicators on the base telephone at their predetermined respective cadences. Upon receipt of the synchronization message, the axiliary device sets its cadence control mechanism to the predetermined state, thus synchronizing them with their like cadence counterparts in the base digital telephone. The auxiliary device then continues to operate its visual indicators at their predetermined respective cadences. |
