英语语法分析

The purpose of the SSCS is to convey narrow-band calls consisting of voice, voiceband data, or circuit mode data.

SSCS的目的在于传递由语音、语音带宽数据或电路模式数据构成的窄带呼叫。

This tendency, together with the reality that voiceband communications will be an important source of traffic on such networks, has led ITU-T to develop this Recommendation.

这个趋势，和这样的事实：语音带通讯在该网络上将会成为一个重要的交通资源，使得ITU-T开发该建议。