Folder 179 Division - Signaling & Ringing Circuits

Signaling Circuits ans Associated Ringer Circuits

Documents

pdf 179-000-000 I66 Popular

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179-000-000_I66.pdf

179-000-000 I66
Contributed by Sam Etler .

pdf 179-306-101 I1 Popular

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179-306-101_I1.pdf

179-306-101 I1

Contributed by Russ Kirk.

pdf 179-306-101-h-se Popular

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179-306-101-h-se.pdf

179-306-101-h-se

Multichannel Tone Test Unit - SD-7C004-01 - Description,
Issue 1, Oct. 1975

"1.02 The MTTU has the capability of monitoring a maximum of 100 trunks
for the presence of unauthorized 2600-Hz tone signals."

pdf 179-306-101-se Popular

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Download (pdf, 995 KB)

179-306-101-se.pdf

179-306-101-se

Multichannel Tone Test Unit - SD-7C004-01 - Description,
Issue 1, Oct. 1975

"1.02 The MTTU has the capability of monitoring a maximum of 100 trunks
for the presence of unauthorized 2600-Hz tone signals."

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Thanks for new documents from Chuck Hensley, John Gilbert, Chuck Batson, Alan David, Steve Flocke, Paul Wills, Dave Gruger, Jim Prather, John Stancliff, Sam Etler, John Novack, Clint Gilliland, Steve Cichorsky and Paul Fassbender.

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