direct distance dialling in Hindi - direct distance dialling meaning in Hindi

	1.	They were lengthened to seven ( 2L + 5N ) in the 1950s to accommodate direct distance dialling.
	2.	Between 1951 and 1958, numbers were lengthened by adding a digit ( 2L + 5N ) in preparation for deployment of direct distance dialling.
	3.	The new technology saw the introduction of new services such as International Direct Distance Dialling and Vertical Services ( Call Waiting, Call forwarding and Conference Calling ).
	4.	In Toronto, historically 2L + 4N before numbers were lengthened to accommodate the 1957 introduction of direct distance dialling, the March 1966 directory had no exchange names.
	5.	However, in the 1970s, as direct distance dialling was introduced to the far northern and western portions of 418, these points were shifted to area code 819, leaving the present area.
	6.	Numbers in 2L + 4N cities ( such as Montr�al and Toronto ) were systematically lengthened to seven digits in the 1950's, a few exchanges at a time, so that all local numbers were seven digits when direct distance dialling finally came to town.
	7.	Late in the 1970s, the northern portions of 418 served by Sotel and Bell along James, Hudson and Ungava Bays and Hudson Strait, as well as the eastern Northwest Territories, were assigned to 819 as exchanges in that area began to receive direct distance dialling.

direct distance dialling meaning in Hindi