| 摘要 |
In order to make it possible to set up test communications between a requesting unit and a requested unit, without withdrawing any unit or any trunk from the normal traffic, the test traffic being incorporated therein without disturbing it, the device includes, linked with the control units of the automatic switch unit (AUT), a test module (EE) formed of a control set (PC) and an information memory (MI), a transcoder (TS), a printer (IM) and test identifiers situated on the units. The control set comprises means making it possible to designate the units and the trunks which a test call is to track a test call and the memory (MI) makes it possible to record the identity of all the units and trunks engaged during this test call made from the control set. The transcoder (TS) is capable of reading the information written into the memory and of forwarding it to the printer. The device can be used for maintenance and repair of a telephone or telegraph automatic switch unit. <IMAGE> |
