Of the numerous digital switching products introduced in the North American telephone market in the late 1970s, only the Nortel DMS family is still in production.
32.
Digital switching systems and some transmission systems ( e . g ., SONET ) depend on reliable, high-quality synchronization ( or timing ) to prevent impairments.
33.
They identify items as large as a building, as small as a single board in a digital switching machine and as complex as a customer circuit.
34.
The project targets 125, 000 lines, mostly in suburban and rural areas by the end of 1997, using state-of-the-art digital technology, digital switching and fiber optics.
35.
At its zenith in the early 1980s, when it opened R & D centers in Heapsort was also an influential figure in the development of digital switching.
36.
Each satellite will have digital switching technology capable of picking up and handing off a telephone call to the next satellite on the way to that call's destination.
37.
The maker of digital switching transmission products said late Tuesday that it earned 37 cents a share in the third quarter, 4 cents higher than the Zacks estimate.
38.
Fax machines, answering machines, alarms and modems, the letter warned, " may need to be adjusted " so they will work with the company's new digital switching equipment.
39.
In 1993, C & P Telephone of West Virginia took its last analog switch out of service, becoming the first Bell Operating Company to have 100 % digital switching
40.
Northern Electric maintained its innovative pace, becoming Northern Telecom, and through part ownership in Bell-Northern Research became a leader in the development of digital switching and other communications technologies.
