| 摘要 |
PURPOSE:To test an additional equipment easily by shifting operation state of a register sender of the additional equipment for international automatic instantaneous connection in international telephone manually. CONSTITUTION:The register sender to be tested is provided in an international addition equipment ISD. A tester connects teminals T1-T6 to an outgoing trunk OGT in the equipment ISD, A tester connects terminals T7-T18 to the register sender RS, and after operating a relay TST provided for testing, he lifts up a handset of a telephone TEL1 and operates a key TS. He selects selection number by the telephone 1 and operates relays r0-r7, and confirms received numerals of the register center by the lighting state of lamps L0-L7 of the test equipment. Further, he confirms sending out of a KP signal by lighting of a lamp LK generating a signal from a multi-frequency oscillator MFG. Thus, the tester can confirm the greater part of function of the register sender RS. |
