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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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."

pdf 179-399-901PT iA Jun71 - Wescom 457-FSA - FX Inband Signaling System - Circuit Desc Op Maint Popular

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179-399-901PT_iA_Jun71_Wescom_457-FSA_FX_Inband_Signaling_System_Circ_Desc_Op_Maint_ocr_tci.pdf

179-399-901PT iA Jun71 - Wescom 457-FSA - FX Inband Signaling System - Circuit Desc Op Maint

Used in the WESCOM 45-type Station Terminating Assemblies. Contributed to the TCI Library by Steve Cichorsky. OCR by Jeff Lamb. Processed by Paul Fassbender.

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