Along with the developing of China Telecom,we have transmormed the BJT link and set up the new BJT DDN link recentely,thus rising the safety and reliability of the whole link.

• 随着我国电信业的发展,最近,我们对白家疃专线进了改造,开通了新的白家疃DDN专线,从而提高了整个链路的安全可靠性。