| 摘要 |
PURPOSE:To secure calling for the pocket bell carriers over the several regions by receiving both the single region calling frequency and the plural region common calling frequency by means of the pocket bell. CONSTITUTION:Pocket bell main body 10 possesses individual call numbers f1 and f2 with carrier FA, and at the same time carrier FX possesses individual call numbers f'1 and f'2 each. At A region 11, B resion 12 and C region 13, the carriers have FA/FX, FB/FX and FC/FX respectively, along with individual call numbers f1, f2, f'1 and f'2 in common for all carriers. When the number of main body 10 is dialed through telephone set 44, telephone exchange 26 is connected to exchange 20 which is the home memory station of 10. Exchange 20 memorizes the number of telephone 44 and at the same time starts radio originating station 31 to transmit carrier FA plus call numbers f1 and f2 to region A. After this, exchange 20 starts radio station 32 via exchange 21 to transmit carrier FX plus call numbers f'1 and f'2 to region B. Then exchange 20 transmits carrier FX plus call numbers f'1 and f'2 from radio station 33 and via exchange 22 after a fixed time in order to call out bell 10. |
