利用自愈环提高高速公路通信网的生存性

The Improvement on the Subsistence of Expressway Telecommunication Network by Use of Self－Healed Ring

比较了SDH传送网采用不同自愈保护机制的性能，介绍了高速公路综合通信系统中所采用的几种方案。与传统方案相比，IBAS(综合宽带接入系统)所采用的两纤单向通道倒换环具有更好的优越性。

This paper compares the various functions by using different self－healed protection systems in SDH transmission network, and provides the introduction of several schemes adopted in integrative telecommunication system of expressways. To compare with the traditional scheme, the two－fiber single direction channel rotating ring used in IBAS shows more superior.