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
