| 摘要 |
PURPOSE:To reduce the quantity of software, by diverting a call processing of a B board without providing an exclusive processing function, and using a sender for the test connection. CONSTITUTION:Signal system information set by a key, etc. is converted to number information of 3 digits cnsisting of a testing sender discriminating code A, a code B showing a signal system, and the number of digits C of a sender testing long signal terminal TTL number, as a test code. When dial receiving preparations have been completed, a central control equipment CC skips head 3 digits of A, B and C in a transmission selective signal, and sends a residual selective signal (TTL number) of the 3 digit number portion shown by C to an originating register trunk from a DP originating register trunk DPOST or an MF originating sender trunk MFOST through a testing outgoing trunk TOGT for the DP line, a switchboard testing device STE, and a junction line trunk TRK. When the TTL number is received by said originating register trunk, the trunk TRK and the terminal TTL are connected through a channel switch NW. |
