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style=\"margin-left:0;text-align:justify\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8bed\u97f3\u6d41\u7684\u5c01\u88c5\u683c\u5f0f\u5e94\u7b26\u5408C.2.4\u97f3\u9891\u6d41\u7684RTP\u5c01\u88c5\u7684\u5b9a\u4e49\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8bed\u97f3\u5e7f\u64ad\u5b9c\u7b26\u5408\u9644\u5f55K\u89c4\u5b9a\u7684\u5a92\u4f53\u6d41\u4fdd\u6d3b\u673a\u5236\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">\n<h2 id=\"%E5%9B%9B%E3%80%81%E5%91%BD%E4%BB%A4%E6%B5%81%E7%A8%8B\" style=\"margin-left:0;text-align:justify\">\u56db\u3001\u547d\u4ee4\u6d41\u7a0b<\/h2>\n<h3 id=\"1%E3%80%81%E6%B5%81%E7%A8%8B%E5%9B%BE%C2%A0\" style=\"margin-left:0;text-align:justify\">1\u3001\u6d41\u7a0b\u56fe\u00a0 <\/h3>\n<p style=\"margin-left:0;text-align:justify\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0SIP\u670d\u52a1\u5668\u53d1\u8d77\u5e7f\u64ad\u7684\u547d\u4ee4\u6d41\u7a0b&#xff0c;\u5e94\u7b26\u5408\u5982\u4e0b\u6d41\u7a0b\u56fe&#xff1a;<\/p>\n<p style=\"margin-left:0px;text-align:center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418175139-6802912b0770b.jpg\" \/><\/p>\n<h3 id=\"2%E3%80%81%E6%B5%81%E7%A8%8B%E6%8F%8F%E8%BF%B0\" style=\"margin-left:0;text-align:justify\">2\u3001\u6d41\u7a0b\u63cf\u8ff0<\/h3>\n<p style=\"margin-left:0;text-align:justify\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5176\u4e2d,\u4fe1\u4ee4 1\u30012\u30013\u30014\u4e3a\u8bed\u97f3\u5e7f\u64ad\u901a\u77e5\u3001\u8bed\u97f3\u5e7f\u64ad\u5e94\u7b54\u6d88\u606f\u6d41\u7a0b;\u4fe1\u4ee45\u300112\u300113\u300114\u300115\u300116 \u4e3a SIP \u670d\u52a1\u5668\u63a5\u6536\u5230\u5ba2\u6237\u7aef\u7684\u547c\u53eb\u8bf7\u6c42\u901a\u8fc7 B2BUA \u4ee3\u7406\u65b9\u5f0f\u5efa\u7acb\u8bed\u97f3\u6d41\u63a5\u6536\u8005\u4e0e\u5a92\u4f53\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u5a92\u4f53\u6d41\u4fe1\u4ee4\u8fc7\u7a0b,\u4fe1\u4ee4 6~11 \u4e3a SIP \u670d\u52a1\u5668\u901a\u8fc7\u4e09\u65b9\u547c\u53eb\u63a7\u5236\u5efa\u7acb\u5a92\u4f53\u670d\u52a1\u5668\u4e0e\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u4e4b\u95f4\u7684\u5a92\u4f53\u6d41\u4fe1\u4ee4\u8fc7\u7a0b,\u4fe1\u4ee4 17~20 \u4e3a SIP \u670d\u52a1\u5668\u65ad\u5f00\u8bed\u97f3\u6d41\u63a5\u6536\u8005\u4e0e\u5a92\u4f53\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u5a92\u4f53\u6d41\u4fe1\u4ee4\u8fc7\u7a0b,\u4fe1\u4ee4 21~24\u4e3aSIP\u670d\u52a1\u5668\u65ad\u5f00\u5a92\u4f53\u670d\u52a1\u5668\u4e0e\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u4e4b\u95f4\u7684\u5a92\u4f53\u6d41\u4fe1\u4ee4\u8fc7\u7a0b\u3002<\/p>\n<hr \/>\n<p style=\"margin-left:0;text-align:justify\">\u547d\u4ee4\u6d41\u7a0b\u63cf\u8ff0\u5982\u4e0b:<\/p>\n<p style=\"margin-left:0;text-align:justify\">a) 1:SIP\u670d\u52a1\u5668\u5411\u8bed\u97f3\u6d41\u63a5\u6536\u8005\u53d1\u9001\u8bed\u97f3\u5e7f\u64ad\u901a\u77e5\u6d88\u606f,\u6d88\u606f\u4e2d\u901a\u8fc7 To\u5934\u57df\u6807\u660e\u4f5c\u4e3a\u76ee\u7684\u5730\u5740\u7684\u8bed\u97f3\u6d41\u63a5\u6536\u8005ID,\u6d88\u606f\u91c7\u7528 Message\u65b9\u6cd5\u643a\u5e26\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">b) 2:\u8bed\u97f3\u6d41\u63a5\u6536\u8005\u6536\u5230\u8bed\u97f3\u5e7f\u64ad\u901a\u77e5\u6d88\u606f\u540e,\u5411SIP\u670d\u52a1\u5668\u53d1\u9001200OK \u54cd\u5e94\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">c) 3:\u8bed\u97f3\u6d41\u63a5\u6536\u8005\u5411SIP\u670d\u52a1\u5668\u53d1\u9001\u8bed\u97f3\u5e7f\u64ad\u5e94\u7b54\u6d88\u606f,\u6d88\u606f\u4e2d\u901a\u8fc7 To\u5934\u57df\u6807\u660e\u4f5c\u4e3a\u76ee\u7684\u5730\u5740\u7684SIP\u670d\u52a1\u5668ID,\u6d88\u606f\u91c7\u7528 Message\u65b9\u6cd5\u643a\u5e26\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">d) 4:SIP\u670d\u52a1\u5668\u6536\u5230\u8bed\u97f3\u5e7f\u64ad\u5e94\u7b54\u6d88\u606f\u540e,\u5411\u8bed\u97f3\u6d41\u63a5\u6536\u8005\u53d1\u9001200OK \u54cd\u5e94\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">e) 5:\u8bed\u97f3\u6d41\u63a5\u6536\u8005\u5411SIP\u670d\u52a1\u5668\u53d1\u9001Invite\u6d88\u606f,\u6d88\u606f\u4e2d\u901a\u8fc7 To\u5934\u57df\u6807\u660e\u4f5c\u4e3a\u76ee\u7684\u5730\u5740\u7684\u8bed\u97f3\u6d41\u53d1\u9001\u8005ID,\u6d88\u606f\u5934\u57df\u4e2d\u643a\u5e26Subject\u5b57\u6bb5,\u8868\u660e\u8bf7\u6c42\u7684\u8bed\u97f3\u6d41\u53d1\u9001\u8005ID\u3001\u53d1\u9001\u65b9\u5a92\u4f53\u6d41\u5e8f\u5217\u53f7\u3001\u8bed\u97f3\u6d41\u63a5\u6536\u8005ID\u3001\u63a5\u6536\u65b9\u5a92\u4f53\u6d41\u5e8f\u5217\u53f7\u7b49\u53c2\u6570,SDP\u6d88\u606f\u4f53\u4e2ds\u5b57\u6bb5\u4e3a\u201cPlay\u201d\u4ee3\u8868\u5b9e\u65f6\u70b9\u64ad,m \u5b57\u6bb5\u4e2d\u5a92\u4f53\u53c2\u6570\u6807\u8bc6\u4e3a\u201caudio\u201d\u8868\u793a\u8bf7\u6c42\u8bed\u97f3\u5a92\u4f53\u6d41\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">f) 6:SIP\u670d\u52a1\u5668\u6536\u5230Invite\u8bf7\u6c42\u540e,\u901a\u8fc7\u4e09\u65b9\u547c\u53eb\u63a7\u5236\u5efa\u7acb\u5a92\u4f53\u670d\u52a1\u5668\u548c\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u4e4b\u95f4\u7684\u5a92\u4f53\u8fde\u63a5\u3002\u5411\u5a92\u4f53\u670d\u52a1\u5668\u53d1\u9001Invite\u6d88\u606f,\u6b64\u6d88\u606f\u4e0d\u643a\u5e26SDP\u6d88\u606f\u4f53\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">g) 7:\u5a92\u4f53\u670d\u52a1\u5668\u6536\u5230SIP\u670d\u52a1\u5668\u7684Invite\u8bf7\u6c42\u540e,\u56de\u590d200OK \u54cd\u5e94,\u643a\u5e26SDP\u6d88\u606f\u4f53,\u6d88\u606f\u4f53\u4e2d\u63cf\u8ff0\u4e86\u5a92\u4f53\u670d\u52a1\u5668\u63a5\u6536\u5a92\u4f53\u6d41\u7684IP\u3001\u7aef\u53e3\u3001\u5a92\u4f53\u683c\u5f0f\u7b49\u5185\u5bb9\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">h) 8:SIP\u670d\u52a1\u5668\u6536\u5230\u5a92\u4f53\u670d\u52a1\u5668\u8fd4\u56de\u7684200OK \u54cd\u5e94\u540e,\u5411\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u53d1\u9001Invite\u8bf7\u6c42,\u6d88\u606f\u4e2d\u901a\u8fc7 To\u5934\u57df\u6807\u660e\u4f5c\u4e3a\u76ee\u7684\u5730\u5740\u7684\u8bed\u97f3\u6d41\u53d1\u9001\u8005ID,\u6d88\u606f\u5934\u57df\u4e2d\u643a\u5e26 Subject\u5b57\u6bb5,\u8868\u660e\u8bf7\u6c42\u7684\u8bed\u97f3\u6d41\u53d1\u9001\u8005ID\u3001\u53d1\u9001\u65b9\u5a92\u4f53\u6d41\u5e8f\u5217\u53f7\u3001\u8bed\u97f3\u6d41\u63a5\u6536\u8005ID\u3001\u63a5\u6536\u65b9\u5a92\u4f53\u6d41\u5e8f\u5217\u53f7\u7b49\u53c2\u6570,\u8bf7\u6c42\u4e2d\u643a\u5e26\u6d88\u606f7\u4e2d\u5a92\u4f53\u670d\u52a1\u5668\u56de\u590d\u7684200OK \u54cd\u5e94\u6d88\u606f\u4f53,s\u5b57\u6bb5\u4e3a\u201cPlay\u201d\u4ee3\u8868\u5b9e\u65f6\u70b9\u64ad,m \u5b57\u6bb5\u4e2d\u5a92\u4f53\u53c2\u6570\u6807\u8bc6\u4e3a\u201caudio\u201d\u8868\u793a\u8bf7\u6c42\u8bed\u97f3\u5a92\u4f53\u6d41,\u589e\u52a0y\u5b57\u6bb5\u63cf\u8ff0SSRC\u503c,f\u5b57\u6bb5\u63cf\u8ff0\u5a92\u4f53\u53c2\u6570\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">i) 9:\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u6536\u5230SIP\u670d\u52a1\u5668\u7684Invite\u8bf7\u6c42\u540e,\u56de\u590d200OK \u54cd\u5e94,\u643a\u5e26SDP\u6d88\u606f\u4f53,\u6d88\u606f\u4f53\u4e2d\u63cf\u8ff0\u4e86\u5a92\u4f53\u6d41\u53d1\u9001\u8005\u53d1\u9001\u5a92\u4f53\u6d41\u7684IP\u3001\u7aef\u53e3\u3001\u5a92\u4f53\u683c\u5f0f\u3001SSRC \u5b57\u6bb5\u7b49\u5185\u5bb9,s\u5b57\u6bb5\u4e3a\u201cPlay\u201d\u4ee3\u8868\u5b9e\u65f6\u70b9\u64ad,m \u5b57\u6bb5\u4e2d\u5a92\u4f53\u53c2\u6570\u6807\u8bc6\u4e3a\u201caudio\u201d\u8868\u793a\u8bf7\u6c42\u8bed\u97f3\u5a92\u4f53\u6d41\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">j) 10:SIP\u670d\u52a1\u5668\u6536\u5230\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u8fd4\u56de\u7684200OK \u54cd\u5e94\u540e,\u5411\u5a92\u4f53\u670d\u52a1\u5668\u53d1\u9001 ACK \u8bf7\u6c42,\u8bf7\u6c42\u4e2d\u643a\u5e26\u6d88\u606f9\u4e2d\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u56de\u590d\u7684200OK \u54cd\u5e94\u6d88\u606f\u4f53,\u5b8c\u6210\u4e0e\u5a92\u4f53\u670d\u52a1\u5668\u7684Invite\u4f1a\u8bdd\u5efa\u7acb\u8fc7\u7a0b\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">k) 11:SIP\u670d\u52a1\u5668\u6536\u5230\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u8fd4\u56de\u7684200OK \u54cd\u5e94\u540e,\u5411\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u53d1\u9001 ACK \u8bf7\u6c42,\u8bf7\u6c42\u4e2d\u4e0d\u643a\u5e26\u6d88\u606f\u4f53,\u5b8c\u6210\u4e0e\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u7684Invite\u4f1a\u8bdd\u5efa\u7acb\u8fc7\u7a0b\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">l) 12:\u5b8c\u6210\u4e09\u65b9\u547c\u53eb\u63a7\u5236\u540e,SIP\u670d\u52a1\u5668\u901a\u8fc7 B2BUA \u4ee3\u7406\u65b9\u5f0f\u5efa\u7acb\u8bed\u97f3\u6d41\u63a5\u6536\u8005\u548c\u5a92\u4f53\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u5a92\u4f53\u8fde\u63a5\u3002\u5728\u6d88\u606f5\u4e2d\u589e\u52a0SSRC\u503c,\u8f6c\u53d1\u7ed9\u5a92\u4f53\u670d\u52a1\u5668\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">m)13:\u5a92\u4f53\u670d\u52a1\u5668\u6536\u5230Invite\u8bf7\u6c42,\u56de\u590d200OK \u54cd\u5e94,\u643a\u5e26SDP\u6d88\u606f\u4f53,\u6d88\u606f\u4f53\u4e2d\u63cf\u8ff0\u4e86\u5a92\u4f53\u670d\u52a1\u5668\u53d1\u9001\u5a92\u4f53\u6d41\u7684IP\u3001\u7aef\u53e3\u3001\u5a92\u4f53\u683c\u5f0f\u3001SSRC\u503c\u7b49\u5185\u5bb9,s\u5b57\u6bb5\u4e3a\u201cPlay\u201d\u4ee3\u8868\u5b9e\u65f6\u70b9\u64ad,m \u5b57\u6bb5\u4e2d\u5a92\u4f53\u53c2\u6570\u6807\u8bc6\u4e3a\u201caudio\u201d\u8868\u793a\u8bf7\u6c42\u8bed\u97f3\u5a92\u4f53\u6d41\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">n) 14:SIP\u670d\u52a1\u5668\u5c06\u6d88\u606f13\u8f6c\u53d1\u7ed9\u8bed\u97f3\u6d41\u63a5\u6536\u8005\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">o) 15:\u8bed\u97f3\u6d41\u63a5\u6536\u8005\u6536\u5230200OK \u54cd\u5e94\u540e,\u56de\u590d ACK \u6d88\u606f,\u5b8c\u6210\u4e0eSIP\u670d\u52a1\u5668\u7684Invite\u4f1a\u8bdd\u5efa\u7acb\u8fc7\u7a0b\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">p) 16:SIP\u670d\u52a1\u5668\u5c06\u6d88\u606f15\u8f6c\u53d1\u7ed9\u5a92\u4f53\u670d\u52a1\u5668,\u5b8c\u6210\u4e0e\u5a92\u4f53\u670d\u52a1\u5668\u7684Invite\u4f1a\u8bdd\u5efa\u7acb\u8fc7\u7a0b\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">q) 17:SIP\u670d\u52a1\u5668\u5411\u8bed\u97f3\u6d41\u63a5\u6536\u8005\u53d1\u9001 BYE\u6d88\u606f,\u65ad\u5f00\u6d88\u606f5\u300114\u300115\u5efa\u7acb\u7684Invite\u4f1a\u8bdd\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">r) 18:\u8bed\u97f3\u6d41\u63a5\u6536\u8005\u6536\u5230 BYE\u6d88\u606f\u540e\u56de\u590d200OK \u54cd\u5e94,\u4f1a\u8bdd\u65ad\u5f00\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">s) 19:SIP\u670d\u52a1\u5668\u5411\u5a92\u4f53\u670d\u52a1\u5668\u53d1\u9001 BYE \u6d88\u606f,\u65ad\u5f00\u6d88\u606f 12\u300113\u300116 \u5efa\u7acb\u7684\u540c\u5a92\u4f53\u670d\u52a1\u5668\u7684Invite\u4f1a\u8bdd\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">t) 20:\u5a92\u4f53\u670d\u52a1\u5668\u6536\u5230 BYE\u6d88\u606f\u540e\u56de\u590d200OK \u54cd\u5e94,\u4f1a\u8bdd\u65ad\u5f00\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">u) 21:SIP\u670d\u52a1\u5668\u5411\u5a92\u4f53\u670d\u52a1\u5668\u53d1\u9001 BYE\u6d88\u606f,\u65ad\u5f00\u6d88\u606f6\u30017\u300110\u5efa\u7acb\u7684\u540c\u5a92\u4f53\u670d\u52a1\u5668\u7684Invite\u4f1a\u8bdd\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">v) 22:\u5a92\u4f53\u670d\u52a1\u5668\u6536\u5230 BYE\u6d88\u606f\u540e\u56de\u590d200OK \u54cd\u5e94,\u4f1a\u8bdd\u65ad\u5f00\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">w)23:SIP\u670d\u52a1\u5668\u5411\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u53d1\u9001 BYE \u6d88\u606f,\u65ad\u5f00\u6d88\u606f8\u30019\u300111\u5efa\u7acb\u7684\u540c\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u7684Invite\u4f1a\u8bdd\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">x) 24:\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u6536\u5230 BYE\u6d88\u606f\u540e\u56de\u590d200OK \u54cd\u5e94,\u4f1a\u8bdd\u65ad\u5f00\u3002<\/p>\n<p style=\"margin-left:0;text-align:justify\">\u6ce8: \u8bed\u97f3\u5e7f\u64ad\u901a\u77e5\u6d88\u606f\u9664\u4e0a\u8ff0\u6d41\u7a0b\u4e2d\u901a\u8fc7SIP\u670d\u52a1\u5668\u53d1\u51fa\u5916,\u4e5f\u53ef\u7531\u8bed\u97f3\u6d41\u53d1\u9001\u8005\u53d1\u51fa,\u6d88\u606f\u4e2d\u901a\u8fc7 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