TBT 1692-1993 铁路电话交换网多频记发器信号方式

TBTB/T16929319930422199310011.()2.120Hz13801980Hz156601140Hz10121Hz123456789101l12131415F0(1380)F1(1500)F2(1620)F4(1740)F7(1860)F11(1980)12Hz12345678910F0(1140)F1(1020)F2(900)F4(780)F7(660)3.3.1.abcde13.2.3.2.1.()()()3.2.2.3.2.3.800Hz()14dB13602000Hz6401160Hz6dB4dB24.33KA15KC5KE51010AA10KD6BB1034.1.4.1.1.KAKA()()()KA6KAKCKA1112KA8KA104.1.2.KCKCKCKAKC64.1.3.KEKEKE64.1.4.10154.2.AA4.2.1.A1A2A6A4.2.2.A3A3BA3A315030msA344.2.3.A4A44A4A415030msA444.2.4.A5A5(2)A5A515030msA544.2.5.A9A9()A9A9A9A9A9A915030msA944A3A4PA5PA9PA3—————A3PA4A5A4PA5PA9A9P———A3——4.3.KDKD555KDKD1——2——3——4——5————6——KD2KD=44.4.BKBKB4.4.1.B1B14.4.2.B2B24.4.3.B3B354.4.4.B4B44.4.5.B5B564.5.4.5.1.A66AKAKAKCKGKEKEA11A122A233A3(B)44A455A566A6KA77A788A899A9100A1011111112121213131314141415151515KC15KGDKC154.5.2.B777(KD)B(KB)KDKDKBKB1122334455687—10KB1B1B65.3245882AXl3AX2X4E'F'G'H'5D'E'F'G'H'4EFGH5DEFGH31XX5.1.8()5.1.1.5.1.1.1.95.1.1.2.10(4)11(5)90AX2X0AX2XEKAEFGH15FGHKDA1A1A1A2A1A1AlA1A6A1A1AlA1A1A1A1A1A1A3PKB10(4)UAX2XEKAEFGH15FGH—KDA1A1A1A1A6A1A1A1A1A1A1A1A1A1A3pKB11(5)0AX1DKADEFGH15EFGH—KDA1A1A1A6A1AlA1A1A1A1A1A1A1A1A1A3PKB5.1.2.5.1.2.1.12(4)13(5)5.1.2.2.1412(4)0AX2XKCE1)0AX2XKCE1)EFGHKDA1A1A1A1A2A1A1A1Al2)A1A1A1A1A3KB1)DEKCDEEHFH92)KCEKCDA1A113(5)OAXlKCD1)0AX1KCD1)DEFGHKDA1A1A1A2A1A1A12)A1A1A1A1A1A3KB14()()0AX2XKCE1)0AX2XKCE1)EFGHKDA1A1A1A1A2A1A1A1A1A1A1A1A1A1A3PKB3)0AX2XKCE1)EFGHKDA1A1A1A1A1A1A1A1A1A3PKB3)KCE1)EFGHKDA1A1A1A1A3KB5.1.3.105.1.3.1.15(42)16(53)5.1.3.2.175.1.3.3.1815(42KCE1)EFGHKDA1A1A1A1A3KBKEE4)EFGHKDA1A1A1A1A3KB16(53)KCD1)DEFGHKDA1A1A1A1A1A3KBKED4)DEFGHKDA1A1A1A1A1A3KB4)DEKEDEEHFH17(42)KCE1)EFGHKDA1A1A1A1A3KBKEE4)EFKEE4)EFGHKDA1A1A2A1A1A1A1A3KB1118KCE1)EFGHKDA1A1A1A1A3KB1)5=EFGH6)5)KDB16)5.1.4.15165.2.(42)5.2.1.195.2.2.20()21()5.2.3.22()23()5.2.4.24()25()5.2.5.26()27()5.2.6.285.2.7.2919EFEFGHKDA1A2A1A1A1A3KB1220EFEFGHKDA1A2A1A1A1A3KB21EFGHKDA1A1A1A3KB3)EFGHKDA1A1A1A3KB22EFEFEFEFGHKDA1A2A1A2A1A2A1A1A1A3KB23EFEFGHKDA1A2A1A1A1A3KB3)EFEFGHKDA1A2A1A1A1A3KB1324EFEFFGHKDA1A2A1A2A1A1A1A3KB25EFEFGHKDA1A2AlA1A1A8KB3)EFGHKDA1A1A1A3KB26EFEFEFGHKDA1A2AlA2A1A1A1A3KB27EFGHKDA1A1A1A3KB3)EFEFGHKDA1A2A1A1A1A3KB1428EFGHKD,A1A1A1A3KB29EFGHKDA1A1A1A3KB5.3.5.3.1.()305.3.2.()315.3.3.()325.3.4.()335.3.5.345.4.35301XXKDA1A1A3KB311X1XXA1A2KDAlA1A3KB321XXKAEFGH15KDA1A1A6A1A1A1A1AlA8KB33151X1XXKAEFGH15KDA1A2A1A1A6A1A1A1AlA1A8KB340AX2X1KAEEGH15XXKDA1A1AlA1A6AlA1A1A1A1AlA1AlA3PKB1XXKDA1A1A3KB352A5()B56.()6.1.6.2.600Z3003400Hz201ZZg−+600600lOdB5201160Hz13602000Hz201ZZg−[phone]dB6.3.16()6.3.1.138015001620174018601980Hz11401020900780660Hz:5Hz6.3.2.()()-81dBm1dB6.3.3.50dB34dB6.3.4.3003400Hz37dB6.4.(0dBr-4dBr)()6.4.1.6.4.1.1.10Hz6.4.1.2.-l-31dBm-5-35dBm6.4.1.3.7dB5dB6.4.2.6.4.2.1.3003400Hz-38dBm-42dBm6.4.2.2.20dB6.4.2.3.13003400Hz-1dBm-5dBm3301150Hz21303400Hz-1dBm-5dBm176.4.2.4.7ms7ms6.4.2.5.20dB6.5.250ms18