通信人家园
标题:
请教
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时间:
2007-3-27 10:53
作者:
xiong19811209
标题:
请教
<span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";"><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 90.45pt; TEXT-INDENT: -53.25pt; mso-list: l0 level1 lfo1; tab-stops: list 90.45pt;"><font face="宋体"><font size="4"><span lang="EN-US" style="mso-fareast-font-family: "Times New Roman";"><span style="mso-list: Ignore;"><span style="FONT: 7pt "Times New Roman";"><font size="5">这是我在一篇文章上看到的：</font> </span></span></span><b><span lang="EN-US">a</span></b><b><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">、</span><span lang="EN-US">b</span></b><b><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">双方通话</span></b><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">。</span><span lang="EN-US">B</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">交换机把</span><span lang="EN-US">b</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">用户的发送线和</span><span lang="EN-US">B</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">交换机中继端口的发送线连接起来，</span><span lang="EN-US">A</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">交换机把中继端口的接收线和</span><span lang="EN-US">a</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">用户的接收线连接在一起。</span><span lang="EN-US">A</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">交换机把</span><span lang="EN-US">a</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">用户的发送线和</span><span lang="EN-US">A</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">交换机中继端口的发送线连接起来，</span><span lang="EN-US">B</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">交换机把中继端口的接收线和</span><span lang="EN-US">b</span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">用户的接收线连接在一起。这样双方就可以通话了。</span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 90.45pt; TEXT-INDENT: -53.25pt; mso-list: l0 level1 lfo1; tab-stops: list 90.45pt;"><font face="宋体"><font size="4"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";"></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 90.45pt; TEXT-INDENT: -53.25pt; mso-list: l0 level1 lfo1; tab-stops: list 90.45pt;"><font face="宋体"><font size="4"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">想请教一下，电话线是否分收和发？</span></font></font></p></span>
时间:
2007-3-27 11:19
作者:
服务生
祝贺LZ真找到一老文章啊!那是原来的四线电话机. 现在都两线双向了!
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