This specification covers a family of telephone switchboards which shall provide semi-and full-automatic switching of local and distant calls on 2-wire and 2- and 6-wire lines and 2-, 4-, and 6-wire trunks utilizing space division switching matrices.
Product Details
- Published:
- 09/28/2015
- Number of Pages:
- 1
- File Size:
- 1 file , 49 KB
- Note:
- This product is unavailable in Ukraine, Russia, Belarus
