| 摘要 |
PURPOSE:To perform dispatching connection from one extension to another extension by connecting a relay control unit and a VODAS (voice operated device antisinging) amplifier in series to a dispatching trunk provided on the trunk side of a switch network, and connecting the other terminal of this amplifier to extension dispatching switching unit provided corresponding to respective extensions. CONSTITUTION:To the trunk side of a switch network SW, a dispatching trunk DISPT, a relay control unit RCU, and VODAS amplifier VAMP are connected, and the other terminal of this amplifier is connected to extension dispatching switching units EDCHU (0-N) provided corresponding to respective extensions. Consequently, one extension subscriber SUBO dials the special number for acquiring the dispatching trunk and the number which corresponds to one extension group to make dispatching connection. The VODAS amplifier operates in a direction A normally and in a direction B when the voice from the dispatched subscriber is loud. |
