恳请大侠帮忙：关于3GPP TS 04.60中PSI部分的解读

jackren317

<span style="font-size: 10.5pt; font-family: 宋体;">最近新入手做</span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;">GPRS</span><span style="font-size: 10.5pt; font-family: 宋体;">通信信令处理方面的工作。可是对于</span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;">3GPP</span><span style="font-size: 10.5pt; font-family: 宋体;">协议一点都不熟，咬着英文看着关于</span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;">04.60</span><span style="font-size: 10.5pt; font-family: 宋体;">部分</span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;">SI</span><span style="font-size: 10.5pt; font-family: 宋体;">部分的内容，可是对于</span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;">Table</span><span style="font-size: 10.5pt; font-family: 宋体;">里面的描述怎么也看不明白啊，尤其是对于以下这个描述：<br/></span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;"><br/>
</span><span style="font-size: 10.5pt; font-family: 宋体;"></span><span lang="EN-GB" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;"> &lt; bit
(val(Extension Length) + 1)</span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;">  </span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;">&amp;
{ &lt;Extension Information &gt; ! { bit ** = &lt;no..string&gt; } } &gt; </span><span style="font-size: 10.5pt; font-family: 宋体;">怎么解读啊？</span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;"><br/>
</span><span style="font-size: 10.5pt; font-family: 宋体;">还有一直都没有弄明白这个描述是用什么语言写的啊？看到论坛有人说网络协议一般都是用</span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;">ASN.1</span><span style="font-size: 10.5pt; font-family: 宋体;">写的，可是下了个关于</span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;">ASN.1</span><span style="font-size: 10.5pt; font-family: 宋体;">的文件来看，却发现里面说的跟这个还是有很多不</span><span style="font-size: 10.5pt; font-family: 宋体;">同。</span><span lang="EN-US" style="font-size: 10.5pt; font-family: &quot;Times New Roman&quot;;"><br/>
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</span><span style="font-size: 10.5pt; font-family: 宋体;">请各位熟悉这些的大侠指点一下啊，先谢谢了。</span>