| Journal Call no. | HE8421.C72 |
|---|---|
| Article Title | Renovation of Beijing-Shenyang-Harbin optical trunk examined. |
| Is Part Of | CTC news ; v.3, no.9, 20 May 1997, p.7. |
| Abstract | After eight months of trial operation, renovation of the Beijing-Shenyang-Harbin optic-fiber trunk based on 2.5Gb/s SDH system was examined and accepted by the State. |