Pulse or digital communications – Repeaters – Testing
Patent
1991-03-05
1992-11-24
Kuntz, Curtis
Pulse or digital communications
Repeaters
Testing
375103, 370 13, 328162, 379 6, 4552261, 364572, 364481, H04B 346, H04B 110
Patent
active
051669544
ABSTRACT:
A facility is provided for measuring the signal-to-noise ratio of a transmission channel using the results obtained by transmitting over the channel a pseudorandom noise signal, in which the value of the signal-to-noise ratio may be used to determine whether the channel contains various types of pulse code modulation equipment.
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patent: 4275348 (1981-06-01), Bayer et al.
patent: 4417337 (1983-11-01), Favin et al.
patent: 4519084 (1985-05-01), Langseth
patent: 4768203 (1988-08-01), Ingle
patent: 4864590 (1989-09-01), Arnon et al.
Grizmala Fredrick
Levonas Robin
AT&T Bell Laboratories
Kuntz Curtis
Luludis F. B.
Tse Young
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