824 THE BELL SYSTEM TECHNICAL JOURNAL, SEPTEMBER 1952 connected with another in the same town.
Describes operational facilities in the BTM 7E teleprinter exchanges of A.C. & R. in New York and San Francisco.
Reperforator switching, as used with carrier and radio circuits, has entailed reorganization of the U.S. national network.
Formal verification has become a key technology to ensure the quality of complex (hardware/software) systems.
We describe a new automatic test pattern generation (ATPG) methodology that has the potential to exploit fine-grain parallel computing and relaxation techniques.
Formal verification is becoming a key technology to ensure the qualilty of complex (hardware/software) systems.
Many of the parts used in the telephone plant are made in such numbers that automatic shop testing of them is desirable.
T h e a d v e n t of nationwide dialing, especially with full a u t o m a t i c a l t e r n a t e routing, has presented additional problems in t h e m a i n t e n a n c e of intertoll t r u n k s
To operate long-distance service on an automatic basis, calls must be charged automatically. The time and zone or multiple metering system has its disadvantages.
A new telephone facility, automatic toll ticketing, was placed in public service on Dec. 7, 1936.
