manual telephone exchange meaning in Hindi

Examples

1. Not all manual telephone exchanges were non-dialable points.
2. A manual telephone exchange opened around August 1915 and closed in December 1982.
3. A local manual telephone exchange was in operation until 1966 when an automatic exchange was installed.
4. In the post-telegraph era, a manual telephone exchange was also located within the post office.
5. The original application for the 6.35 mm ( in ) phone jack was in manual telephone exchanges.
6. As more manual telephone exchanges were converted to dial operation, more and more subscribers had access to these special numbers.
7. During the 1960s there were two houses at Gulpa one being the postmaster / railway siding and manual telephone exchange combined.
8. In 1884, a multiple-switchboard manual telephone exchange was mostly copied from a design by C . E . Scribner at Western Electric.
9. There stands the World War I memorial, a set of stock yards for auctioning of sheep stock, and a defunct manual telephone exchange.
10. Subscriber Trunk Dialling ( STD ) was introduced in 1958 to allow a caller to call another telephone directly instead of via a manual telephone exchange operator.