📄 001_56.htm
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class=ps0><NOBR>了功能强大和健壮，所以它获得了巨大的市场成功。正如作者多次见到的那样，所有的激动</NOBR></SPAN> <SPAN
class=ps1><NOBR>都来自于平台实现的细节中。实现通过协议信令、配置管理、收集诊断和统计数据以及报告</NOBR></SPAN> <SPAN
class=ps2><NOBR>信息的组合来提供电话特性。最后，信令协议在更大体系中的实现才是它们所提供的产品的</NOBR></SPAN> <SPAN
class=ps3><NOBR>真正不同之处。</NOBR></SPAN> <SPAN class=ps4><NOBR><SPAN
class=ft1>SIP<SPAN
class=em2>消息的解析非常简单，在开始出现问题时，找到信令问题会更加有效。另一方面，</SPAN></SPAN></NOBR></SPAN> <SPAN
class=ps5><NOBR><SPAN class=ft1>H.323<SPAN class=em2>使用的</SPAN>ASN.1<SPAN
class=em2>导致了难以理解的二进制数据和包编码。这对于估计开发和维护成本非常</SPAN></SPAN></NOBR></SPAN> <SPAN
class=ps6><NOBR>重要。</NOBR></SPAN> <SPAN
class=ps7><NOBR>协议信令对于系统实现的方向和它能够适应特定应用需要的程度有很大影响。所有的竞</NOBR></SPAN> <SPAN
class=ps8><NOBR>争者在它们优化的领域内都有突出的优点。时间将证明，<SPAN
class=em0>SIP</SPAN>是否会在市场中获得领先地位。</NOBR></SPAN> <SPAN class=ps9><NOBR><SPAN
class=ft2>56 <SPAN class=em1>IP </SPAN><SPAN
class=em3>电话技术：稳定的</SPAN><SPAN class=em1>VoIP</SPAN><SPAN
class=em3>服务集成</SPAN></SPAN></NOBR></SPAN> <SPAN class=ps10><NOBR><SPAN
class=ft3>文档</SPAN></NOBR></SPAN> </BODY></HTML>
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