{"id":48,"date":"2018-03-10T13:59:04","date_gmt":"2018-03-10T05:59:04","guid":{"rendered":"http:\/\/www.max-shu.com\/blog\/?p=48"},"modified":"2018-03-10T14:34:56","modified_gmt":"2018-03-10T06:34:56","slug":"%e8%b0%83%e5%88%b6%e8%a7%a3%e8%b0%83%e5%99%a8%e4%b8%80%e8%88%ac-at-%e5%91%bd%e4%bb%a4%e5%8f%82%e8%80%83","status":"publish","type":"post","link":"http:\/\/www.max-shu.com\/blog\/?p=48","title":{"rendered":"\u8c03\u5236\u89e3\u8c03\u5668\u4e00\u822c AT \u547d\u4ee4\u53c2\u8003"},"content":{"rendered":"

\u8fc1\u79fb\u81eahttp:\/\/adaishu.blog.163.com\/blog\/static\/175831286201132883524908\/<\/a><\/p>\n

\u4e0b\u8868\u5217\u51fa\u4e86\u60a8\u7684\u8c03\u5236\u89e3\u8c03\u5668\u80fd\u7406\u89e3\u7684 AT \u547d\u4ee4\u3002 \u6bcf\u4e2a\u547d\u4ee4\u63cf\u8ff0\u5305\u62ec\u547d\u4ee4\u540d\u79f0\u3001\u89e3\u91ca\u548c\u76f8\u5173\u53c2\u6570\u3002<\/p>\n

\u3000AT \u547d\u4ee4<\/b><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
<\/td>\n<\/tr>\n
\n
\u547d\u4ee4<\/b><\/kbd><\/div>\n<\/th>\n
\n
\u63cf\u8ff0<\/b><\/kbd><\/div>\n<\/th>\n<\/tr>\n
AT<\/td>\n\u6ce8\u610f\u4ee3\u7801 AT \u662f\u547d\u4ee4\u884c\u7684\u5b57\u9996\uff0c\u544a\u8bc9\u8c03\u5236\u89e3\u8c03\u5668\u8981\u8f93\u5165\u547d\u4ee4\u6216\u547d\u4ee4\u5e8f\u5217\u3002\u5b83\u6267\u884c\u9664 A\/ (\u91cd\u590d) \u548c +++ (\u6362\u7801) \u4e4b\u5916\u7684\u6240\u6709\u547d\u4ee4\u3002\u5355\u72ec\u8f93\u5165 AT\uff0c\u5982\u679c\u8c03\u5236\u89e3\u8c03\u5668\u51c6\u5907\u63a5\u6536\u547d\u4ee4\uff0c\u5219\u8c03\u5236\u89e3\u8c03\u5668\u8fd4\u56de OK \u6216 0 \u4fe1\u606f\u3002\u53c2\u6570\uff1a\u65e0<\/td>\n<\/tr>\n
A\/<\/td>\n\u91cd\u590d\u4e0a\u4e00\u547d\u4ee4\u3002 A\/ \u547d\u4ee4\u4f7f\u8c03\u5236\u89e3\u8c03\u5668\u91cd\u65b0\u6267\u884c\u4e0a\u4e00\u884c\u7684\u547d\u4ee4\uff0c\u4f8b\u5982\uff0c\u91cd\u65b0\u62e8\u53f7\u3002 \u4e0a\u4e00\u6b21\u6267\u884c\u7684\u547d\u4ee4\u4e00\u76f4\u4fdd\u7559\u5728\u547d\u4ee4\u7f13\u51b2\u533a\u4e2d\uff0c\u76f4\u5230\u8f93\u5165 AT \u547d\u4ee4\u6216\u7535\u6e90\u5df2\u5173\u95ed\u4e3a\u6b62\u3002 \u8fd9\u4e9b\u64cd\u4f5c\u5c06\u6e05\u9664\u7f13\u51b2\u533a\u5e76\u4f7f A\/ \u547d\u4ee4\u65e0\u6548\uff0c\u56e0\u4e3a\u6ca1\u6709\u8981\u91cd\u65b0\u6267\u884c\u7684\u547d\u4ee4\u3002\u60a8\u65e0\u9700\u8f93\u5165 <cr> \u6216 AT\uff0c\u56e0\u4e3a\u5b83\u4eec\u4e0e\u4e0a\u4e00\u547d\u4ee4\u4e00\u8d77\u9a7b\u7559\u5728\u547d\u4ee4\u7f13\u51b2\u533a\u5185\u3002\u53c2\u6570\uff1a\u65e0<\/td>\n<\/tr>\n
A<\/td>\n\u5e94\u7b54\u547d\u4ee4\u3002 A \u547d\u4ee4\u4f7f\u8c03\u5236\u89e3\u8c03\u5668\u65e0\u9700\u7b49\u5f85\u54cd\u94c3\u5219\u53ef\u5e94\u7b54\u547c\u53eb\u3002 \u6b64\u547d\u4ee4\u5728\u624b\u52a8\u5e94\u7b54\u547c\u53eb\u6216\u4e0e\u4ee5\u59cb\u53d1\u65b9\u5f0f\u4e0e\u53e6\u4e00\u8c03\u5236\u89e3\u8c03\u5668\u5efa\u7acb\u76f4\u63a5\u8fde\u63a5\u65f6\u6709\u7528\u3002\u540c\u4e00\u547d\u4ee4\u884c\u4e2d A \u4e4b\u540e\u7684\u6240\u6709\u547d\u4ee4\u5c06\u88ab\u5ffd\u7565\u3002<\/p>\n

\u6ce8\uff1a<\/b>\u6b64\u547d\u4ee4\u5728\u67d0\u4e9b\u56fd\u5bb6\u7981\u6b62\u4f7f\u7528\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cATA \u8fd4\u56de\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n

\u53c2\u6570\uff1a\u65e0<\/td>\n<\/tr>\n

Bn<\/td>\n\u901a\u4fe1\u6807\u51c6\u9009\u9879\u3002 \u5728 ITU \u4e0e Bell \u6807\u51c6\u4e4b\u95f4\u4f5c\u51fa\u786e\u5b9a\u3002\u53c2\u6570\uff1an = 0 – 3, 15, 16<\/p>\n

n = 0 ITU V.22 \u4f7f\u7528 1200bps \u7684\u4f20\u8f93\u901f\u7387<\/p>\n

n = 1\uff0cBell 212 \u4f7f\u7528 1200 bps \u7684\u4f20\u8f93\u901f\u7387 (\u9ed8\u8ba4)<\/p>\n

n = 2, 3 \u64a4\u6d88 ITU V23 \u53cd\u5411\u901a\u9053<\/p>\n

n = 15 ITU\uff0c V.21 \u4f7f\u7528 300bps \u7684\u4f20\u8f93\u901f\u7387<\/p>\n

n = 16\uff0c103J \u4f7f\u7528 300 bps \u7684\u4f20\u8f93\u901f\u7387 (\u9ed8\u8ba4\u8bbe\u7f6e)<\/td>\n<\/tr>\n

Dn<\/td>\n\u62e8\u53f7\u547d\u4ee4\u3002 D \u547d\u4ee4\u4f7f\u8c03\u5236\u89e3\u8c03\u5668\u62e8\u547d\u4ee4\u884c\u4e2d D \u540e\u9762\u7684\u53f7\u7801\u3002\u5728\u62e8\u53f7\u4fee\u6b63\u7b26\u53f7\u9875\u9762\u4e2d\u5b9a\u4e49\u6709\u6548\u7684\u62e8\u53f7\u6570\u5b57\u548c\u6240\u62e8\u53f7\u4fee\u6b63\u7b26\u53f7\u3002\u5728\u8109\u51b2\u62e8\u53f7\u65b9\u5f0f\u4e0b\uff0c\u975e\u6570\u5b57\u5b57\u7b26\u4e0d\u8d77\u4f5c\u7528\u3002<\/p>\n

\u53c2\u6570\uff1a\u65e0<\/p>\n

\u6ce8\uff1a<\/b>\u5728\u67d0\u6b64\u56fd\u5bb6\u89c4\u5b9a\u5728 D \u547d\u4ee4\u4e4b\u540e\u5fc5\u987b\u8f93\u5165\u7535\u8bdd\u53f7\u7801\u3002<\/td>\n<\/tr>\n

En<\/td>\n\u547d\u4ee4\u56de\u5e94\u3002 En \u6b64\u547d\u4ee4\u786e\u5b9a\u8c03\u5236\u89e3\u8c03\u5668\u5728\u547d\u4ee4\u65b9\u5f0f\u65f6\uff0c\u60a8\u5728\u952e\u76d8\u4e0a\u8f93\u5165\u7684\u5b57\u7b26\u662f\u5426\u56de\u5e94\u5230\u5c4f\u5e55\u4e0a(\u672c\u5730\u56de\u5e94)\u3002\u53c2\u6570\uff1an = 0, 1<\/p>\n

n = 0 \u5173\u95ed\u672c\u5730\u56de\u5e94\u529f\u80fd<\/p>\n

n = 1 \u542f\u7528\u672c\u5730\u56de\u5e94\u529f\u80fd (\u9ed8\u8ba4)<\/td>\n<\/tr>\n

Hn<\/td>\n\u6302\u65ad\u63a7\u5236\u3002 Hn \u547d\u4ee4\u544a\u8bc9\u8c03\u5236\u89e3\u8c03\u5668\u662f\u6302\u65ad\u4ee5\u65ad\u5f00\u547c\u53eb\u8fd8\u662f\u6458\u673a\u4ee5\u5360\u7528\u7535\u8bdd\u7ebf\u3002\u53c2\u6570\uff1an = 0, 1<\/p>\n

n = 0 \u8c03\u5236\u89e3\u8c03\u5668\u6302\u65ad (hang up) (\u9ed8\u8ba4\u503c)<\/p>\n

n = 1 \u8c03\u5236\u89e3\u8c03\u5668\u6458\u673a<\/p>\n

\u6ce8\uff1a<\/b>H1 \u547d\u4ee4\u5728\u67d0\u4e9b\u56fd\u5bb6\u7981\u6b62\u4f7f\u7528\u3002 \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cATH1 \u8fd4\u56de\u9519\u8bef\u4fe1\u606f\u3002<\/td>\n<\/tr>\n

In<\/td>\n\u8981\u6c42\u8c03\u5236\u89e3\u8c03\u5668\u7684\u8bc6\u522b\u53f7 (ID)\u3002 In \u547d\u4ee4\u8be2\u95ee\u8c03\u5236\u89e3\u8c03\u5668\u7684\u4ea7\u54c1\u8bc6\u522b\u53f7\u3001ROM \u6821\u9a8c\u548c\u6216 ROM \u6821\u9a8c\u548c\u7684\u72b6\u6001\u3002\u53c2\u6570\uff1an = 0, 1, 2, 3, 4, 5, 9<\/p>\n

n = 0, 3 \u8fd4\u56de\u8c03\u5236\u89e3\u8c03\u5668\u9ed8\u8ba4\u7684\u901f\u7387\u548c\u63a7\u5236\u5668\u7684\u786c\u4ef6\u7248\u672c<\/p>\n

n = 1 \u8ba1\u7b97 ROM \u6821\u9a8c\u548c\u5e76\u663e\u793a\u6821\u9a8c\u548c (\u4f8b\u5982\uff0c12AB)<\/p>\n

n = 2 \u68c0\u67e5 ROM \u3001\u8ba1\u7b97\u5e76\u9a8c\u8bc1\u6821\u9a8c\u548c\u53ca\u663e\u793a OK \u6216 ERROR (\u9519\u8bef) \u4fe1\u606f\u3002<\/p>\n

n = 4 \u8fd4\u56de\u6570\u636e\u6cf5\u7684\u786c\u4ef6\u7248\u672c<\/p>\n

n = 5 \u8fd4\u56de\u8c03\u5236\u89e3\u8c03\u5668\u677f\u7684 ID: \u8f6f\u4ef6\u7248\u672c\u3001\u786c\u4ef6\u7248\u672c\u548c\u56fd\u5bb6\u4ee3\u7801<\/p>\n

n = 9 \u8fd4\u56de\u56fd\u5bb6\u4ee3\u7801\u3002<\/td>\n<\/tr>\n

Ln<\/td>\n\u8bbe\u7f6e\u626c\u58f0\u5668\u97f3\u91cf\u3002ATLn \u5728\u4f20\u771f\u548c\u6570\u636e\u901a\u4fe1\u65f6\u8bbe\u7f6e\u626c\u58f0\u5668\u7684\u97f3\u91cf\u4e3a\u4f4e\u3001\u4e2d\u6216\u9ad8\u3002\u53c2\u6570\uff1an = 0 – 3<\/p>\n

n = 0, 1 \u4f4e\u97f3\u91cf<\/p>\n

n = 2 \u4e2d\u97f3\u91cf (\u9ed8\u8ba4\u8bbe\u7f6e)<\/p>\n

n = 3 \u9ad8\u97f3\u91cf<\/p>\n

\u6ce8\uff1a<\/b>\u8981\u5b8c\u5168\u5173\u95ed\u626c\u58f0\u5668\uff0c\u8bf7\u4f7f\u7528 MO \u547d\u4ee4\u3002<\/td>\n<\/tr>\n

Mn<\/td>\n\u626c\u58f0\u5668\u97f3\u91cf\u63a7\u5236\u9009\u9879\u3002Mn \u547d\u4ee4\u63a7\u5236\u4f20\u771f\u548c\u6570\u636e\u901a\u4fe1\u65f6\u626c\u58f0\u5668\u662f\u6253\u5f00\u8fd8\u662f\u5173\u95ed\u3002\u53c2\u6570\uff1an = 0 – 3<\/p>\n

n = 0 \u626c\u58f0\u5668\u4e00\u76f4\u5173\u95ed<\/p>\n

n = 1 \u8c03\u5236\u89e3\u8c03\u5668\u5728\u68c0\u6d4b\u5230\u8f7d\u6ce2\u4fe1\u53f7\u4e4b\u524d\uff0c\u626c\u58f0\u5668\u59cb\u7ec8\u6253\u5f00\u3002(\u9ed8\u8ba4\u503c)<\/p>\n

n = 2 \u5728\u8c03\u5236\u89e3\u8c03\u5668\u6458\u673a\u65f6\uff0c\u626c\u58f0\u5668\u59cb\u7ec8\u6253\u5f00\u3002<\/p>\n

n = 3 \u5728\u62e8\u53f7\u540e\u626c\u58f0\u5668\u59cb\u7ec8\u6253\u5f00\uff0c\u76f4\u5230\u8c03\u5236\u89e3\u8c03\u5668\u68c0\u6d4b\u5230\u8f7d\u6ce2\u4fe1\u53f7\u4e3a\u6b62\uff0c\u62e8\u53f7\u65f6\u9664\u5916\u3002<\/td>\n<\/tr>\n

Nn<\/td>\n\u8c03\u5236\u63e1\u624b\u3002Nn \u547d\u4ee4\u63a7\u5236\u672c\u5730\u8c03\u5236\u89e3\u8c03\u5668\u5728\u4e0e\u901f\u7387\u4e0d\u540c\u7684\u8fdc\u7a0b\u8c03\u5236\u89e3\u8c03\u5668\u8fde\u63a5\u65f6\u662f\u5426\u6267\u884c\u534f\u5546\u7684\u63e1\u624b \u3002\u53c2\u6570\uff1an = 0, 1<\/p>\n

n = 0 \u5728\u59cb\u53d1\u547c\u53eb\u6216\u5e94\u7b54\u547c\u53eb\u65f6\uff0c\u4ec5\u4ee5 S37 \u5bc4\u5b58\u5668\u548c ATB \u547d\u4ee4\u6307\u5b9a\u7684\u901a\u4fe1\u6807\u51c6\u4e0b\u8fdb\u884c\u6570\u5b57\u4ea4\u6362\u3002<\/p>\n

n = 1 \u5728\u59cb\u53d1\u547c\u53eb\u6216\u5e94\u7b54\u547c\u53eb\u65f6\uff0c\u4ec5\u4ee5 S37 \u5bc4\u5b58\u5668\u548c ATB \u547d\u4ee4\u6307\u5b9a\u7684\u901f\u7387\u5f00\u59cb\u63e1\u624b\u3002 \u5728\u63e1\u624b\u671f\u95f4\uff0c \u901f\u7387\u53ef\u80fd\u4f1a\u56de\u843d\u3002(\u9ed8\u8ba4\u8bbe\u7f6e)<\/td>\n<\/tr>\n

On<\/td>\n\u5728\u7ebf\u72b6\u6001\u3002 On \u547d\u4ee4\u5f3a\u8feb\u8c03\u5236\u89e3\u8c03\u5668\u8fdb\u5165\u5728\u7ebf\u65b9\u5f0f\u3002\u53c2\u6570\uff1an = 0, 1, 3<\/p>\n

n = 0 \u8fdb\u5165\u5728\u7ebf\u72b6\u6001<\/p>\n

n = 1 \u5728\u8fd4\u56de\u5728\u7ebf\u6570\u636e\u65b9\u5f0f\u524d\u521d\u59cb\u5316\u5747\u8861\u91cd\u65b0\u6392\u5b9a\u5e8f\u5217\u3002<\/p>\n

n = 3 \u5728\u8fd4\u56de\u5728\u7ebf\u6570\u636e\u65b9\u5f0f\u524d\uff0c\u8fdb\u884c\u901f\u7387\u7684\u91cd\u65b0\u534f\u5546<\/p>\n

\u6ce8\uff1a<\/b>\u5728\u4f7f\u7528 +++ \u6362\u7801\u547d\u4ee4\u6362\u81f3\u547d\u4ee4\u65b9\u5f0f\u540e\u6267\u884c\u8be5\u547d\u4ee4\u5c06\u8fd4\u56de\u5728\u7ebf\u65b9\u5f0f\u3002<\/td>\n<\/tr>\n

P<\/td>\n\u8109\u51b2\u62e8\u53f7\u3002 P \u547d\u4ee4\u8bbe\u7f6e\u8109\u51b2\u62e8\u53f7\u65b9\u5f0f\u3002 \u6240\u6709\u7684\u547c\u53eb\u5c06\u505c\u7559\u5728\u8109\u51b2\u65b9\u5f0f\uff0c\u76f4\u5230\u4f7f\u7528 T \u547d\u4ee4\u9009\u62e9\u97f3\u9891\u62e8\u53f7\u4e3a\u6b62\u3002 \u6b64\u547d\u4ee4\u4e5f\u53ef\u7528\u4f5c\u62e8\u53f7\u4fee\u6b63\u7b26\u3002\u53c2\u6570\uff1a\u65e0<\/p>\n

\u6ce8\uff1a<\/b>\u67d0\u4e9b\u56fd\u5bb6\u4e0d\u53ef\u4ee5\u4f7f\u7528\u8109\u51b2\u62e8\u53f7\u3002 \u5728\u8fd9\u4e9b\u56fd\u5bb6 P \u547d\u4ee4\u5c06\u88ab\u5ffd\u7565\u3002<\/td>\n<\/tr>\n

Qn<\/td>\n\u6291\u5236\u7ed3\u679c\u7801\u3002 Qn \u542f\u7528\u8c03\u5236\u89e3\u8c03\u5668\u53d1\u9001\u7ed3\u679c\u7801\u3002\u53c2\u6570\uff1an = 0, 1<\/p>\n

n = 0 \u542f\u7528\u7ed3\u679c\u7801 (\u9ed8\u8ba4\u8bbe\u7f6e)<\/p>\n

n = 1 \u7981\u7528\u8fd4\u56de\u7ed3\u679c\u7801\u3002(\u9759\u566a)<\/td>\n<\/tr>\n

Sr=n<\/td>\n\u5199\u5165 S \u5bc4\u5b58\u5668\u3002 Sr=n \u5c06 r \u5bc4\u5b58\u5668\u7684\u503c\u8bbe\u7f6e\u4e3a n \u3002 \u7528\u6b64\u547d\u4ee4\u53ef\u4fee\u6539\u8fd9\u4e9b\u5bc4\u5b58\u5668\u4e2d\u7684\u5185\u5bb9\u3002\u53c2\u6570\uff1a\u65e0<\/p>\n

\u8303\u56f4\uff1a r = 0 – 27, 29, 31 – 33, 35, 37, 89 (\u5bc4\u5b58\u5668\u53f7)<\/p>\n

n = 0 – 255 (\u53d6\u503c)<\/p>\n

\u5207\u8bb0\uff1a<\/b>\u5982\u679c\u5411\u4fdd\u7559\u7684\u5bc4\u5b58\u5668\u6216\u53ea\u8bfb\u5bc4\u5b58\u5668\u4e2d\u5199\u5165\u5185\u5bb9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u65e0\u6cd5\u9884\u6599 \u7684\u7ed3\u679c\u3002 \u8bf7\u53c2\u9605 S \u5bc4\u5b58\u5668\u547d\u4ee4\u53c2\u8003\u4ee5\u83b7\u5f97\u5b8c\u6574\u7684\u5bc4\u5b58\u5668\u5217\u8868\u3002<\/td>\n<\/tr>\n

Sn?<\/td>\n\u8bfb\u53d6\u5bc4\u5b58\u5668\u3002 Sn? \u547d\u4ee4 \u62a5\u544a n \u6307\u5b9a\u7684\u5bc4\u5b58\u5668\u7684\u503c\uff0c\u8be5\u503c\u53ef\u4ee5\u662f\u4efb\u4e00\u6709\u6548\u7684S \u5bc4\u5b58\u5668\u53f7\u3002\u53c2\u6570\uff1a\u65e0<\/p>\n

\u8303\u56f4\uff1a n = 0 – 27, 29, 31 – 33, 35, 37, 89<\/p>\n

\u6ce8\uff1a<\/b>\u53d6\u503c\u4ee5\u5341\u8fdb\u5236\u7684\u683c\u5f0f\u62a5\u544a\u3002 \u8981\u83b7\u5f97\u4f4d\u6620\u5c04\u5bc4\u5b58\u5668\u7684\u503c\uff0c\u8bf7\u5c06\u5341\u8fdb\u5236\u8f6c\u4e3a\u4e8c\u8fdb\u5236\u3002<\/td>\n<\/tr>\n

T<\/td>\n\u97f3\u9891\u62e8\u53f7\u3002 T \u547d\u4ee4\u5c06\u62e8\u53f7\u65b9\u5f0f\u8bbe\u4e3a\u97f3\u9891\u62e8\u53f7\u3002 \u9ed8\u8ba4\u8bbe\u7f6e\u4e3a\u97f3\u9891\u62e8\u53f7\u3002 \u6b64\u547d\u4ee4\u4e5f\u53ef\u7528\u4f5c\u62e8\u53f7\u4fee\u6b63\u7b26\u3002\u53c2\u6570\uff1a\u65e0<\/td>\n<\/tr>\n
Vn<\/td>\n\u7ed3\u679c\u7801\u7684\u5f62\u5f0f\u3002Vn \u547d\u4ee4\u786e\u5b9a\u8c03\u5236\u89e3\u8c03\u5668\u8fd4\u56de\u7684\u7ed3\u679c\u7801\u7684\u7c7b\u578b\u3002\u53c2\u6570\uff1an = 0, 1<\/p>\n

n = 0 \u4ee5\u6570\u5b57\u5f62\u5f0f\u53d1\u9001\u7ed3\u679c\u7801\u3002(\u7b80\u77ed\u7684\u5f62\u5f0f\u6216\u6570\u5b57)<\/p>\n

n = 1 \u4ee5\u6587\u672c\u7684\u5f62\u5f0f\u53d1\u9001\u7ed3\u679c\u7801\u3002(\u957f\u683c\u5f0f\u6216\u5197\u4f59) (\u9ed8\u8ba4\u8bbe\u7f6e)<\/td>\n<\/tr>\n

Xn<\/td>\n\u8bbe\u7f6e\u7ed3\u679c\u7801\u548c\u547c\u53eb\u8fdb\u884c Xn \u547d\u4ee4\u9009\u62e9\u7ed3\u679c\u7801\u96c6\u548c\u62e8\u53f7\u529f\u80fd\u3002 Vn \u547d\u4ee4\u786e\u5b9a\u7ed3\u679c\u7801\u662f\u4ee5\u6587\u5b57\u65b9\u5f0f\u8fd8\u662f\u6570\u5b57\u65b9\u5f0f\u53d1\u9001\uff0c \u4ea6\u8bf7\u53c2\u9605\u7ed3\u679c\u4ee3\u7801\u3002\u6269\u5c55\u7684\u7ed3\u679c\u7801\uff1a \u5982\u679c\u542f\u7528\u6b64\u9879\uff0c\u8c03\u5236\u89e3\u8c03\u5668\u663e\u793a\u57fa\u672c\u7684\u7ed3\u679c\u7801\u3001\u8fde\u63a5\u4fe1\u606f\u3001\u8c03\u5236\u89e3\u8c03\u5668\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\u3001\u8c03\u5236\u89e3\u8c03\u5668\u9519\u8bef\u6821\u6b63\u7684\u8868\u793a\u548c\u6570\u636e\u538b\u7f29\u8bbe\u7f6e\u3002 \u5982\u679c\u7981\u7528\u6b64\u9879\uff0c\u53ea\u663e\u793a OK, CONNECT, RING, NO CARRIER \u548c ERROR\u3002<\/p>\n

\u62e8\u53f7\u97f3\u68c0\u6d4b\uff1a \u5982\u679c\u542f\u7528\u6b64\u9879\uff0c\u8c03\u5236\u89e3\u8c03\u5668\u4ec5\u5728\u68c0\u6d4b\u5230\u62e8\u53f7\u97f3\u65f6\u62e8\u53f7\uff1b \u5982\u679c 10 \u79d2\u949f\u5185\u672a\u68c0\u6d4b\u5230\u62e8\u53f7\u97f3\uff0c\u5c06\u65ad\u5f00\u547c\u53eb\u3002 \u5982\u679c\u7981\u7528\u6b64\u9879\uff0c \u8c03\u5236\u89e3\u8c03\u5668\u4e0d\u7ba1\u662f\u5426\u68c0\u6d4b\u5230\u62e8\u53f7\u97f3\u5747\u5c06\u62e8\u53f7\u3002 \u60a8\u53ef\u9009\u62e9\u8c03\u5236\u89e3\u8c03\u5668\u5728 S6 \u5bc4\u5b58\u5668\u4e2d\u62e8\u53f7\u524d\u9700\u7b49\u5f85\u7684\u79d2\u6570\u3002<\/p>\n

\u5fd9\u97f3\u68c0\u6d4b\uff1a \u5982\u679c\u542f\u7528\u6b64\u9879\uff0c\u8c03\u5236\u89e3\u8c03\u5668\u68c0\u67e5\u5fd9\u97f3\u3002 \u5982\u679c\u7981\u7528\u6b64\u9879\uff0c\u8c03\u5236\u89e3\u8c03\u5668\u5ffd\u7565\u5fd9\u97f3\u3002<\/p>\n

\u53c2\u6570\uff1an = 0 – 4, 7<\/p>\n

n = 0 \u7981\u7528\u6269\u5c55\u7ed3\u679c\u7801\u3001\u62e8\u53f7\u97f3\u68c0\u6d4b\u548c\u5fd9\u97f3\u68c0\u6d4b\u3002<\/p>\n

n = 1 \u542f\u7528\u6269\u5c55\u7ed3\u679c\u7801\uff1b \u7981\u7528\u62e8\u53f7\u97f3\u68c0\u6d4b\u548c\u5fd9\u97f3\u68c0\u6d4b\u3002<\/p>\n

n = 2 \u542f\u7528\u6269\u5c55\u7ed3\u679c\u7801\u548c\u62e8\u53f7\u97f3\u68c0\u6d4b\uff1b \u7981\u7528\u5fd9\u97f3\u68c0\u6d4b\u3002<\/p>\n

n = 3 \u542f\u7528\u6269\u5c55\u7ed3\u679c\u7801\u548c\u5fd9\u97f3\u68c0\u6d4b\u3002 \u7981\u7528\u62e8\u53f7\u97f3\u68c0\u6d4b\u3002<\/p>\n

n = 4 \u542f\u7528\u6269\u5c55\u7ed3\u679c\u7801\u3001\u62e8\u53f7\u97f3\u68c0\u6d4b\u548c\u5fd9\u97f3\u68c0\u6d4b (\u9ed8\u8ba4\u8bbe\u7f6e)\u3002<\/p>\n

n = 7 \u7981\u7528\u6269\u5c55\u7ed3\u679c\u7801\uff1b \u542f\u7528\u62e8\u53f7\u97f3\u68c0\u6d4b\u548c\u5fd9\u97f3\u68c0\u6d4b\u3002<\/td>\n<\/tr>\n

Z<\/td>\n\u6062\u590d\u5df2\u4fdd\u5b58\u7684\u914d\u7f6e\u6587\u4ef6\u3002 \u6b64\u547d\u4ee4\u6307\u793a\u8c03\u5236\u89e3\u8c03\u5668\u6302\u65ad\u5e76\u6062\u590d\u7531\u4e0a\u4e00\u6b21 &W \u547d\u4ee4\u4fdd\u5b58\u7684\u6587\u4ef6\u3002<\/td>\n<\/tr>\n
+++<\/td>\n\u6362\u7801\u5e8f\u5217\u3002\u5728 S2 \u5bc4\u5b58\u5668\u4e2d\u7684\u5b57\u7b26\u96c6\u8fde\u7eed\u4e09\u6b21\u5feb\u901f\u53d1\u9001\u81f3\u8c03\u5236\u89e3\u8c03\u5668 (\u53c2\u9605 S12 \u5bc4\u5b58\u5668)\uff0c \u8c03\u5236\u89e3\u8c03\u5668\u8f6c\u6362\u81f3\u547d\u4ee4\u72b6\u6001\u3002 \u6362\u7801\u5b57\u7b26\u7684\u9ed8\u8ba4\u503c\u4e3a +\u3002 \u5728\u8bf4\u660e\u6587\u6863\u6307\u793a\u60a8\u8f93\u5165 +++ \u65f6\uff0c\u8fde\u7eed\u4e09\u6b21\u5728 S2 \u5bc4\u5b58\u5668\u4e2d\u5feb\u901f\u8f93\u5165\u5b57\u7b26\u96c6\u3002 \u8bf7\u52ff\u5728\u6362\u7801\u5e8f\u5217\u4e4b\u524d\u52a0\u4e0a AT \u547d\u4ee4\uff0c\u5e76\u4e14\u8f93\u5165\u540e\u4e0d\u8981\u6309 Enter \u952e\u3002\u6ce8\uff1a<\/b>\u8981\u8fd4\u56de\u5728\u7ebf\u72b6\u6001\uff0c\u8bf7\u4f7f\u7528 ATO \u547d\u4ee4\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

\u8fc1\u79fb\u81eahttp:\/\/adaishu.blog.163.com\/blog\/static\/175831286201 …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[47,45,46],"class_list":["post-48","post","type-post","status-publish","format-standard","hentry","category-14","tag-at","tag-modem","tag-46"],"views":1781,"_links":{"self":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/48","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=48"}],"version-history":[{"count":1,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/48\/revisions"}],"predecessor-version":[{"id":49,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/48\/revisions\/49"}],"wp:attachment":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=48"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=48"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=48"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}