| EWSD交换机如何实现对非法呼叫的限制 |
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| 引用本文： | 贾永华. EWSD交换机如何实现对非法呼叫的限制[J]. 电信建设, 2001, 0(6): 62-66 |
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| 作者姓名： | 贾永华 |
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| 作者单位： | 北京市电信公司网络局.北京,100032 |
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| 摘 要： | 针对网上大量的无效话单，我们可以通过对直拨用户交换机（DID）发起的呼叫进行主叫号码鉴别，对携带的主叫号码是非法号码或无效号码的呼叫予以拒绝，以保护企业利益。
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| 关 键 词： | EWSD交换机 通信网 呼叫限制 |
| 文章编号： | 1009-9336(2001)06-0060-05 |
| 修稿时间： | 2001-04-12 |
Restriction of Illegal Calls by EWSD Exchange |
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| JIA Yong-hua. Restriction of Illegal Calls by EWSD Exchange[J]. Telecommunications Construction, 2001, 0(6): 62-66 |
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| Authors: | JIA Yong-hua |
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| Abstract: | There are always large numbers of in- valid call tickets in the network. In order to safe- guard the interest of the carriers, we can reject calls from illegal or invalid calling numbers by discrimi- nating the calling numbers of calls exchanged by DID (Direct Inward Dialing) exchanges. |
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| Keywords: | DID calling number discrimination load of processors |
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