| 摘要 |
PURPOSE:To enable the execution of originating/incoming of a pseudo call and the confirmation of a number collating tone at a training seat or its vicinity, by using a pseudo calling device for training of switchboard operators to a training switchboard and at the same time providing a control line between a supervisory attendant board and a switchboard for training. CONSTITUTION:Both originating channel A and an incoming channel B are provided to a network NW of an exchange for a pseudo subscriber. In a training mode, the channels A and B are connected to an accepting terminal of the originating side and an originating terminal of the called side of a position trunk PST. Then a pseudo call for training is transmitted from the channel A via a control line (a) and then received at the channel B via an operation of the switchboard by an operator. At the same time, an interruption connecting line C is provided for collation of numbers, and the line C and the channel B are connected in terms of AC and within a pseudo calling device PSUBE. Then the number collating tone transmitted from an exchange or a switchboard is folded to the operator via the line C to complete at interrupting connection and to perform the collation of numbers. |
