{"id":477629,"date":"2023-08-09T09:18:01","date_gmt":"2023-08-09T09:18:01","guid":{"rendered":""},"modified":"2023-09-05T11:15:07","modified_gmt":"2023-09-05T11:15:07","slug":"integrated-service-digital-network","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/integrated-service-digital-network\/","title":{"rendered":"\u7efc\u5408\u4e1a\u52a1\u6570\u5b57\u7f51"},"content":{"rendered":"<h2>\u4ecb\u7ecd<\/h2>\n<p>\u7efc\u5408\u4e1a\u52a1\u6570\u5b57\u7f51\u7edc (ISDN) \u662f\u4e00\u79cd\u7535\u4fe1\u7f51\u7edc\u6280\u672f\uff0c\u5141\u8bb8\u901a\u8fc7\u540c\u4e00\u6570\u5b57\u4fe1\u9053\u540c\u65f6\u4f20\u8f93\u8bed\u97f3\u3001\u6570\u636e\u548c\u89c6\u9891\u3002\u5b83\u4ee3\u8868\u4e86\u901a\u4fe1\u80fd\u529b\u7684\u91cd\u5927\u8fdb\u6b65\uff0c\u5b9e\u73b0\u4e86\u9ad8\u6548\u3001\u9ad8\u8d28\u91cf\u7684\u6570\u636e\u4f20\u8f93\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8 ISDN \u7684\u5386\u53f2\u3001\u7ed3\u6784\u3001\u529f\u80fd\u3001\u7c7b\u578b\u3001\u5e94\u7528\u548c\u672a\u6765\u524d\u666f\uff0c\u4ee5\u53ca\u5b83\u4e0e\u4ee3\u7406\u670d\u52a1\u5668\u7684\u5173\u7cfb\u3002<\/p>\n<h2>ISDN \u7684\u8d77\u6e90\u548c\u65e9\u671f\u63d0\u53ca<\/h2>\n<p>ISDN \u7684\u6982\u5ff5\u6700\u65e9\u662f\u5728 20 \u4e16\u7eaa 70 \u5e74\u4ee3\u63d0\u51fa\u7684\uff0c\u65e8\u5728\u6ee1\u8db3\u65e5\u76ca\u589e\u957f\u7684\u6570\u5b57\u901a\u4fe1\u9700\u6c42\u30021972 \u5e74\uff0c\u56fd\u9645\u7535\u62a5\u7535\u8bdd\u54a8\u8be2\u59d4\u5458\u4f1a (CCITT\uff0c\u73b0\u4e3a ITU-T) \u63d0\u51fa\u4e86\u53ef\u4ee5\u540c\u65f6\u5904\u7406\u8bed\u97f3\u548c\u6570\u636e\u7684\u5b8c\u5168\u96c6\u6210\u7f51\u7edc\u7684\u60f3\u6cd5\u3002\u76f4\u5230 20 \u4e16\u7eaa 80 \u5e74\u4ee3\uff0cISDN \u624d\u5f00\u59cb\u5f97\u5230\u91cd\u5927\u53d1\u5c55\u548c\u90e8\u7f72\u3002<\/p>\n<h2>\u6709\u5173 ISDN \u7684\u8be6\u7ec6\u4fe1\u606f<\/h2>\n<p>ISDN \u63d0\u4f9b\u7aef\u5230\u7aef\u6570\u5b57\u8fde\u63a5\uff0c\u7528\u6570\u5b57\u7f51\u7edc\u53d6\u4ee3\u4f20\u7edf\u7684\u6a21\u62df\u7f51\u7edc\u3002\u5b83\u901a\u8fc7\u73b0\u6709\u7684\u94dc\u8d28\u7535\u8bdd\u7ebf\u8fd0\u884c\uff0c\u7ecf\u6d4e\u9ad8\u6548\u4e14\u6613\u4e8e\u8bbf\u95ee\u3002\u6807\u51c6 ISDN \u8fde\u63a5\u7531\u4e24\u4e2a 64 kbps\uff08\u6bcf\u79d2\u5343\u6bd4\u7279\uff09B \u4fe1\u9053\uff08\u9002\u7528\u4e8e\u6570\u636e\u4f20\u8f93\uff09\u548c\u4e00\u4e2a 16 kbps D \u4fe1\u9053\uff08\u7528\u4e8e\u4fe1\u53f7\u4f20\u8f93\u548c\u63a7\u5236\u76ee\u7684\uff09\u7ec4\u6210\u3002<\/p>\n<h2>ISDN \u7684\u5185\u90e8\u7ed3\u6784\u548c\u529f\u80fd<\/h2>\n<p>ISDN \u7f51\u7edc\u53ef\u5206\u4e3a\u4e24\u4e2a\u4e3b\u8981\u90e8\u5206\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u7528\u6237\u7f51\u7edc\u63a5\u53e3\uff08UNI\uff09<\/strong>\uff1a\u8fd9\u662f\u5ba2\u6237\u8bbe\u5907\u4e0e\u672c\u5730\u4ea4\u6362\u8fd0\u8425\u5546\u7f51\u7edc\u4e4b\u95f4\u7684\u63a5\u53e3\u3002UNI \u53ef\u4ee5\u4f7f\u7528\u5404\u79cd\u63a5\u53e3\u6765\u5b9e\u73b0\uff0c\u4f8b\u5982\u57fa\u672c\u901f\u7387\u63a5\u53e3 (BRI) \u6216\u4e3b\u901f\u7387\u63a5\u53e3 (PRI)\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u7f51\u7edc\u8282\u70b9\u63a5\u53e3 (NNI)<\/strong>\uff1a\u6b64\u63a5\u53e3\u5c06\u672c\u5730\u4ea4\u6362\u8fd0\u8425\u5546\u7684\u7f51\u7edc\u4e0e\u957f\u9014\u4ea4\u6362\u8fd0\u8425\u5546\u7684\u7f51\u7edc\u76f8\u8fde\u63a5\u3002\u5b83\u786e\u4fdd\u4e0d\u540c\u8fd0\u8425\u5546\u4e4b\u95f4\u7684\u65e0\u7f1d\u901a\u4fe1\u3002<\/p>\n<\/li>\n<\/ol>\n<p>ISDN \u7684\u5de5\u4f5c\u539f\u7406\u662f\u5c06\u8bed\u97f3\u3001\u6570\u636e\u548c\u89c6\u9891\u4fe1\u53f7\u6570\u5b57\u5316\uff0c\u7136\u540e\u4ee5\u6570\u636e\u5305\u7684\u5f62\u5f0f\u901a\u8fc7\u6570\u5b57\u4fe1\u9053\u4f20\u8f93\u3002ISDN \u4ea4\u6362\u673a\u8d1f\u8d23\u5904\u7406\u547c\u53eb\u8bbe\u7f6e\u3001\u4fe1\u53f7\u53d1\u9001\u548c\u8def\u7531\uff0c\u4ee5\u5728\u53d1\u9001\u65b9\u548c\u63a5\u6536\u65b9\u4e4b\u95f4\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n<h2>ISDN \u7684\u4e3b\u8981\u7279\u70b9<\/h2>\n<p>ISDN \u5177\u6709\u51e0\u4e2a\u57fa\u672c\u7279\u6027\uff0c\u4f7f\u5176\u6210\u4e3a\u4e00\u79cd\u6709\u4ef7\u503c\u7684\u901a\u4fe1\u6280\u672f\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u6570\u5b57\u4f20\u8f93<\/strong>\uff1a\u4e0e\u4f20\u7edf\u6a21\u62df\u7f51\u7edc\u4e0d\u540c\uff0cISDN \u91c7\u7528\u6570\u5b57\u4f20\u8f93\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u8bed\u97f3\u6e05\u6670\u5ea6\u548c\u6570\u636e\u5b8c\u6574\u6027\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u7efc\u5408\u670d\u52a1<\/strong>\uff1a\u987e\u540d\u601d\u4e49\uff0cISDN\u96c6\u6210\u4e86\u8bed\u97f3\u3001\u6570\u636e\u3001\u89c6\u9891\u7b49\u591a\u79cd\u670d\u52a1\uff0c\u63d0\u4f9b\u4e86\u7edf\u4e00\u7684\u901a\u4fe1\u5e73\u53f0\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u9ad8\u901f<\/strong>\uff1aISDN \u5728\u57fa\u672c\u901f\u7387\u63a5\u53e3 (BRI) \u4e0a\u53ef\u4ee5\u5b9e\u73b0\u9ad8\u8fbe 128 kbps \u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\uff0c\u5728\u4e3b\u901f\u7387\u63a5\u53e3 (PRI) \u4e0a\u53ef\u4ee5\u5b9e\u73b0\u66f4\u9ad8\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u53ef\u9760\u6027<\/strong>\uff1aISDN \u63d0\u4f9b\u7a33\u5b9a\u53ef\u9760\u7684\u8fde\u63a5\uff0c\u786e\u4fdd\u6700\u5c11\u7684\u6570\u636e\u4e22\u5931\u548c\u51cf\u5c11\u7684\u5ef6\u8fdf\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5168\u7403\u6807\u51c6<\/strong>\uff1aISDN \u662f\u7531 ITU-T \u5236\u5b9a\u7684\u56fd\u9645\u6807\u51c6\uff0c\u786e\u4fdd\u4e0d\u540c\u7f51\u7edc\u4e4b\u95f4\u7684\u517c\u5bb9\u6027\u548c\u4e92\u64cd\u4f5c\u6027\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>ISDN \u7684\u7c7b\u578b<\/h2>\n<p>ISDN \u4e3b\u8981\u6709\u4e24\u79cd\u7c7b\u578b\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u57fa\u672c\u901f\u7387\u63a5\u53e3 (BRI)<\/strong>\uff1aBRI \u9002\u7528\u4e8e\u4f4f\u5b85\u548c\u5c0f\u578b\u4f01\u4e1a\u3002\u5b83\u7531\u4e24\u4e2a 64 kbps B \u4fe1\u9053\u548c\u4e00\u4e2a 16 kbps D \u4fe1\u9053\u7ec4\u6210\u3002\u603b\u6570\u636e\u4f20\u8f93\u7387\u4e3a 144 kbps\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4e3b\u901f\u7387\u63a5\u53e3 (PRI)<\/strong>\uff1aPRI \u662f\u4e3a\u901a\u4fe1\u9700\u6c42\u8f83\u9ad8\u7684\u5927\u578b\u4f01\u4e1a\u8bbe\u8ba1\u7684\u3002\u5b83\u5728\u5317\u7f8e\u5305\u62ec 23 \u4e2a B \u4fe1\u9053\u548c\u4e00\u4e2a 64 kbps D \u4fe1\u9053\uff08\u5728\u6b27\u6d32\u4e3a 30 \u4e2a B \u4fe1\u9053\uff09\uff0c\u603b\u6570\u636e\u4f20\u8f93\u901f\u7387\u4e3a 1.544 Mbps\uff08\u5728\u6b27\u6d32\u4e3a 2.048 Mbps\uff09\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u6bd4\u8f83\u8868\uff0c\u91cd\u70b9\u4ecb\u7ecd\u4e86 BRI \u548c PRI \u4e4b\u95f4\u7684\u5dee\u5f02\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u7279\u5f81<\/th>\n<th>\u4e00\u5e26\u4e00\u8def<\/th>\n<th>\u4f18\u5148\u7b49\u7ea7<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B \u9891\u9053<\/td>\n<td>2 (\u6bcf\u4e2a 64 kbps)<\/td>\n<td>23 (\u6bcf\u6761 64 kbps)<\/td>\n<\/tr>\n<tr>\n<td>D \u901a\u9053<\/td>\n<td>1\uff0816kbps\uff09<\/td>\n<td>1\uff0864kbps\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u603b\u6570\u636e\u901f\u7387<\/td>\n<td>144 kbps<\/td>\n<td>1.544 Mbps\uff08\u5317\u7f8e\uff09<\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td>2.048 Mbps\uff08\u6b27\u6d32\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4f7f\u7528 ISDN\uff1a\u5e94\u7528\u3001\u6311\u6218\u548c\u89e3\u51b3\u65b9\u6848<\/h2>\n<p>ISDN \u5df2\u5e94\u7528\u4e8e\u5404\u4e2a\u9886\u57df\uff0c\u5176\u4e2d\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\n<p><strong>\u89c6\u9891\u4f1a\u8bae<\/strong>\uff1aISDN \u7684\u9ad8\u6570\u636e\u4f20\u8f93\u7387\u548c\u53ef\u9760\u7684\u8fde\u63a5\u4f7f\u5176\u9002\u5408\u5b9e\u65f6\u89c6\u9891\u4f1a\u8bae\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u6570\u636e\u4f20\u8f93<\/strong>\uff1a\u5b83\u6709\u52a9\u4e8e\u5feb\u901f\u3001\u5b89\u5168\u5730\u4f20\u8f93\u6570\u636e\uff0c\u4f7f\u5176\u6210\u4e3a\u9700\u8981\u9ad8\u6548\u6570\u636e\u4ea4\u6362\u7684\u4f01\u4e1a\u7684\u7406\u60f3\u9009\u62e9\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u8fdc\u7a0b\u8bbf\u95ee<\/strong>\uff1aISDN\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u5185\u90e8\u7f51\u7edc\u7684\u8fdc\u7a0b\u8bbf\u95ee\uff0c\u4ece\u800c\u5b9e\u73b0\u8fdc\u7a0b\u529e\u516c\u548c\u8fdc\u7a0b\u64cd\u4f5c\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u5c3d\u7ba1 ISDN \u5177\u6709\u4f17\u591a\u4f18\u52bf\uff0c\u4f46\u591a\u5e74\u6765\u5b83\u4ecd\u9762\u4e34\u4e00\u4e9b\u6311\u6218\uff0c\u4f8b\u5982\u4e0e\u5bbd\u5e26\u7b49\u65b0\u6280\u672f\u76f8\u6bd4\u5e26\u5bbd\u6709\u9650\u3002\u4e0d\u8fc7\uff0cISDN \u4e0e\u5176\u4ed6\u6280\u672f\u96c6\u6210\u7b49\u89e3\u51b3\u65b9\u6848\u6709\u52a9\u4e8e\u89e3\u51b3\u8fd9\u4e9b\u6311\u6218\u3002<\/p>\n<h2>\u4e3b\u8981\u7279\u70b9\u53ca\u4e0e\u540c\u7c7b\u4ea7\u54c1\u7684\u6bd4\u8f83<\/h2>\n<p>ISDN \u7ecf\u5e38\u4e0e\u5176\u4ed6\u901a\u4fe1\u6280\u672f\u8fdb\u884c\u6bd4\u8f83\u3002\u8ba9\u6211\u4eec\u5c06\u5176\u4e0e\u4e24\u79cd\u7a81\u51fa\u7684\u6280\u672f\u8fdb\u884c\u6bd4\u8f83\uff1a<\/p>\n<ol>\n<li><strong>ISDN \u4e0e PSTN\uff08\u516c\u5171\u4ea4\u6362\u7535\u8bdd\u7f51\u7edc\uff09<\/strong>:<\/li>\n<\/ol>\n<table>\n<thead>\n<tr>\n<th>\u7279\u5f81<\/th>\n<th>\u7efc\u5408\u4e1a\u52a1\u6570\u5b57\u7f51<\/th>\n<th>\u516c\u5171\u7535\u8bdd\u7f51\u7edc<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6570\u636e\u4f20\u8f93<\/td>\n<td>\u6570\u5b57\u7684<\/td>\n<td>\u6a21\u62df<\/td>\n<\/tr>\n<tr>\n<td>\u670d\u52a1<\/td>\n<td>\u878d\u5408\u7684<\/td>\n<td>\u4e3b\u8981\u662f\u8bed\u97f3<\/td>\n<\/tr>\n<tr>\n<td>\u4fe1\u53f7\u8d28\u91cf<\/td>\n<td>\u9ad8\u7684<\/td>\n<td>\u7f13\u548c<\/td>\n<\/tr>\n<tr>\n<td>\u5e26\u5bbd<\/td>\n<td>\u6709\u9650\u7684<\/td>\n<td>\u6709\u9650\u7684<\/td>\n<\/tr>\n<tr>\n<td>\u53ef\u7528\u6027<\/td>\n<td>\u5e7f\u6cdb<\/td>\n<td>\u5e7f\u6cdb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ol start=\"2\">\n<li><strong>ISDN \u4e0e DSL\uff08\u6570\u5b57\u7528\u6237\u7ebf\u8def\uff09<\/strong>:<\/li>\n<\/ol>\n<table>\n<thead>\n<tr>\n<th>\u7279\u5f81<\/th>\n<th>\u7efc\u5408\u4e1a\u52a1\u6570\u5b57\u7f51<\/th>\n<th>DSL<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6280\u672f<\/td>\n<td>\u7535\u8def\u4ea4\u6362<\/td>\n<td>\u5c01\u5305\u4ea4\u6362<\/td>\n<\/tr>\n<tr>\n<td>\u901f\u5ea6<\/td>\n<td>\u6700\u9ad8 128 kbps<\/td>\n<td>\u9ad8\u8fbe\u51e0Mbps<\/td>\n<\/tr>\n<tr>\n<td>\u7528\u6cd5<\/td>\n<td>\u8bed\u97f3\u3001\u6570\u636e\u3001\u89c6\u9891<\/td>\n<td>\u4ec5\u9650\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<td>\u8ddd\u79bb<\/td>\n<td>\u53d7\u8ddd\u79bb\u9650\u5236<\/td>\n<td>\u53ef\u5b9e\u73b0\u957f\u8ddd\u79bb<\/td>\n<\/tr>\n<tr>\n<td>\u6210\u672c<\/td>\n<td>\u7f13\u548c<\/td>\n<td>\u56e0\u8ba1\u5212\u800c\u5f02<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u524d\u666f\u548c\u672a\u6765\u6280\u672f<\/h2>\n<p>\u867d\u7136 ISDN \u5728\u8fc7\u53bb\u88ab\u5e7f\u6cdb\u4f7f\u7528\uff0c\u4f46\u5149\u7ea4\u3001\u7535\u7f06\u548c\u65e0\u7ebf\u901a\u4fe1\u7b49\u65b0\u6280\u672f\u5df2\u6210\u4e3a\u4eba\u4eec\u5173\u6ce8\u7684\u7126\u70b9\u3002\u7136\u800c\uff0cISDN \u5bf9\u4e8e\u7279\u5b9a\u5e94\u7528\u548c\u9ad8\u901f\u66ff\u4ee3\u65b9\u6848\u6709\u9650\u7684\u5730\u533a\u4ecd\u7136\u5f88\u6709\u4ef7\u503c\u3002\u6b64\u5916\uff0c\u968f\u7740\u5bf9\u7efc\u5408\u670d\u52a1\u7684\u9700\u6c42\u4e0d\u65ad\u589e\u957f\uff0cISDN \u7684\u9057\u4ea7\u53ef\u80fd\u4f1a\u6fc0\u53d1\u672a\u6765\u7684\u901a\u4fe1\u6280\u672f\u8fdb\u4e00\u6b65\u589e\u5f3a\u5176\u529f\u80fd\u3002<\/p>\n<h2>ISDN \u548c\u4ee3\u7406\u670d\u52a1\u5668<\/h2>\n<p>\u4ee3\u7406\u670d\u52a1\u5668\uff08\u5982 OneProxy \u63d0\u4f9b\u7684\u4ee3\u7406\u670d\u52a1\u5668\uff09\u53ef\u4ee5\u4e0e ISDN \u534f\u540c\u5de5\u4f5c\uff0c\u4ee5\u589e\u5f3a\u9690\u79c1\u3001\u5b89\u5168\u6027\u548c\u8bbf\u95ee\u63a7\u5236\u3002\u901a\u8fc7\u4e2d\u95f4\u670d\u52a1\u5668\u8def\u7531\u6570\u636e\uff0c\u4ee3\u7406\u670d\u52a1\u53ef\u4ee5\u63a9\u76d6\u7528\u6237\u7684 IP \u5730\u5740\uff0c\u5b9e\u73b0\u533f\u540d\u6d4f\u89c8\u5e76\u9632\u6b62\u7f51\u7edc\u5a01\u80c1\u3002\u5c3d\u7ba1 ISDN \u548c\u4ee3\u7406\u670d\u52a1\u5668\u7684\u7528\u9014\u4e0d\u540c\uff0c\u4f46\u5b83\u4eec\u53ef\u4ee5\u5728\u7279\u5b9a\u573a\u666f\u4e2d\u76f8\u4e92\u8865\u5145\uff0c\u4ee5\u63d0\u4f9b\u66f4\u5168\u9762\u7684\u901a\u4fe1\u548c\u6d4f\u89c8\u4f53\u9a8c\u3002<\/p>\n<h2>\u76f8\u5173\u94fe\u63a5<\/h2>\n<p>\u6709\u5173\u7efc\u5408\u4e1a\u52a1\u6570\u5b57\u7f51 (ISDN) \u7684\u66f4\u591a\u4fe1\u606f\uff0c\u60a8\u53ef\u4ee5\u53c2\u8003\u4ee5\u4e0b\u8d44\u6e90\uff1a<\/p>\n<ol>\n<li>\n<p><a href=\"https:\/\/www.itu.int\/rec\/T-REC-I.430\/en\" target=\"_new\" rel=\"noopener nofollow\">ITU-T \u5efa\u8bae I.430\uff1aISDN \u7528\u6237\u7f51\u7edc\u63a5\u53e3 - \u6570\u636e\u94fe\u8def\u5c42\u89c4\u8303<\/a><\/p>\n<\/li>\n<li>\n<p><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/support\/docs\/broadband-access\/integrated-services-digital-network-isdn\/34417-isdn-basics.html\" target=\"_new\" rel=\"noopener nofollow\">ISDN \u57fa\u7840\u77e5\u8bc6 \u2013 \u601d\u79d1<\/a><\/p>\n<\/li>\n<li>\n<p><a href=\"https:\/\/www.diffen.com\/difference\/DSL_vs_ISDN\" target=\"_new\" rel=\"noopener nofollow\">ISDN \u4e0e DSL \u2013 \u533a\u522b<\/a><\/p>\n<\/li>\n<li>\n<p><a href=\"https:\/\/oneproxy.pro\/cn\/blog\/\" target=\"_new\" rel=\"noopener\">\u4ee3\u7406\u670d\u52a1\u5668\u53ca\u5176\u7528\u9014 \u2013 OneProxy \u535a\u5ba2<\/a><\/p>\n<\/li>\n<\/ol>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u7efc\u5408\u4e1a\u52a1\u6570\u5b57\u7f51\u7edc (ISDN) \u662f\u7535\u4fe1\u53d1\u5c55\u53f2\u4e0a\u7684\u4e00\u4e2a\u91cd\u8981\u91cc\u7a0b\u7891\u3002\u5c3d\u7ba1\u65b0\u6280\u672f\u5360\u636e\u4e86\u4e3b\u5bfc\u5730\u4f4d\uff0c\u4f46 ISDN \u7684\u4f20\u7edf\u4ecd\u7136\u5b58\u5728\uff0c\u7ee7\u7eed\u652f\u6301\u57fa\u672c\u5e94\u7528\u3002\u51ed\u501f\u5176\u7efc\u5408\u670d\u52a1\u3001\u9ad8\u901f\u5ea6\u548c\u53ef\u9760\u6027\uff0cISDN \u5bf9\u6211\u4eec\u7684\u901a\u4fe1\u65b9\u5f0f\u4ea7\u751f\u4e86\u6301\u4e45\u7684\u5f71\u54cd\u3002\u968f\u7740\u6280\u672f\u7684\u8fdb\u6b65\uff0cISDN \u7684\u8d21\u732e\u4ecd\u5c06\u662f\u5851\u9020\u901a\u4fe1\u7f51\u7edc\u672a\u6765\u7684\u57fa\u7840\u8981\u7d20\u3002<\/p>","protected":false},"featured_media":477630,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477629","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Integrated Service Digital Network (ISDN) - A Comprehensive Overview<\/mark>","faq_items":[{"question":"What is Integrated Service Digital Network (ISDN)?","answer":"<p>Integrated Service Digital Network (ISDN) is a telecommunications network technology that enables the simultaneous transmission of voice, data, and video over a single digital channel. It offers high-speed, reliable communication by digitizing signals and sending them in packets over digital lines.<\/p>"},{"question":"How did ISDN originate, and when was it first introduced?","answer":"<p>The concept of ISDN was first proposed by the International Telegraph and Telephone Consultative Committee (CCITT) in 1972 as a fully integrated network for voice and data. Significant development and deployment started in the 1980s.<\/p>"},{"question":"What are the key features of ISDN?","answer":"<p>ISDN offers digital transmission, integrated services for voice, data, and video, high-speed connectivity, reliability, and it is an international standard regulated by ITU-T.<\/p>"},{"question":"What are the main types of ISDN?","answer":"<p>There are two main types of ISDN - Basic Rate Interface (BRI) and Primary Rate Interface (PRI). BRI is suitable for residential and small business use with two B-channels and one D-channel, while PRI is designed for larger enterprises with multiple B-channels and a higher data transfer rate.<\/p>"},{"question":"How does ISDN work internally?","answer":"<p>ISDN comprises the User Network Interface (UNI), connecting customer equipment to the carrier's network, and the Network Node Interface (NNI), linking local and interexchange carrier networks. It digitizes and packets voice, data, and video signals, and the ISDN switch handles call setup and routing.<\/p>"},{"question":"What are the applications of ISDN?","answer":"<p>ISDN finds applications in video conferencing, data transfer, and remote access to internal networks. Its high-speed and reliability make it valuable in various communication scenarios.<\/p>"},{"question":"How does ISDN compare to other technologies like PSTN and DSL?","answer":"<p>Compared to Public Switched Telephone Network (PSTN), ISDN offers digital transmission, integrated services, and higher signal quality. When compared to Digital Subscriber Line (DSL), ISDN has a circuit-switched technology, lower speed, supports voice, data, and video, and has a limited distance.<\/p>"},{"question":"What are the future prospects of ISDN?","answer":"<p>While newer technologies have emerged, ISDN's legacy continues to inspire future communication technologies. It remains relevant in regions with limited high-speed alternatives and specific applications.<\/p>"},{"question":"How does ISDN work with proxy servers?","answer":"<p>Proxy servers, like OneProxy, can work alongside ISDN to enhance privacy and security. Proxy services route data through an intermediary server, masking the user's IP address and providing anonymous browsing. Although they serve different purposes, they can complement each other for a more comprehensive communication and browsing experience.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/477629","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/477629\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/477630"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=477629"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}