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Folder 975 Division - Signaling Systems

Signaling Systems

Documents

pdf 975-000-000 I13 Popular

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975-000-000_I13.pdf

975-000-000 I13
Contributed by Sam Etler .

pdf 975-000-000-se Popular

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975-000-000-se.pdf

975-000-000-se

Numerical Index - Division 975 - Signaling Systems - General
Descriptive Information, Issue 13, 1980-10-01, 1 page

pdf 975-110-100 i2 Jan80 - Customer Loop Signals and Signaling Systems Popular

By 1361 downloads

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975-110-100_I2.pdf

975-110-100 i2 Jan80 - Customer Loop Signals and Signaling Systems

Contributed by Russ Kirk.

pdf 975-110-100-se Popular

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975-110-100-se.pdf

975-110-100-se

Customer Loop Signals and Signaling Systems, Issue 2,
1980-01-01, 20 pages

pdf 975-115-100 i1 Jun57 - Signals & Signaling Systems between Offices Popular

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975-115-100_I1.pdf

975-115-100 i1 Jun57 - Signals & Signaling Systems between Offices

Contributed by Russ Kirk.

pdf 975-115-100-se Popular

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975-115-100-se.pdf

975-115-100-se

Signals and Signaling Systems Between Offices - Used in
Message Telephone Service - General Descriptive Information, Issue 1,
1957-06-01, 37 pages (Note: SE didn't create this PDF. Probably came from
the CIC but?SE doesn't know for sure. SE has a paper copy and they seem to be
exactly the same.)

pdf 975-120-100 i1 Jan80 - Interoffice Signals & Signaling Systems Popular

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975-120-100_I1.pdf

975-120-100 i1 Jan80 - Interoffice Signals & Signaling Systems

Contributed by Russ Kirk.

pdf 975-120-100-se Popular

By 1420 downloads

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975-120-100-se.pdf

975-120-100-se

Interoffice Signals and Signaling Systems, Issue 1,
1980-01-01, 33 pages

pdf 975-215-100 I2 Popular

By 1088 downloads

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975-215-100_I2.pdf

975-215-100 I2
Contributed by Russ Kirk.

pdf 975-215-100-se Popular

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975-215-100-se.pdf

975-215-100-se

2400- or 2600-Cycle Single-Frequency Signaling System -
General Descriptive Information - Toll Systems, Issue 2, 1958-09-01, 16
pages

pdf 975-230-100 I2 Popular

By 1185 downloads

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975-230-100_I2.pdf

975-230-100 I2
Contributed by Russ Kirk.

pdf 975-230-100-se Popular

By 1437 downloads

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975-230-100-se.pdf

975-230-100-se

DX Signaling System - General Descriptive Information, Issue
2, 1975-05-01, 9 pages

pdf 975-240-100 I3 Popular

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975-240-100_I3.pdf

975-240-100 I3
Contributed by Russ Kirk.

pdf 975-240-100-se Popular

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975-240-100-se.pdf

975-240-100-se

Type E Single-Frequency Signaling System - General
Descriptive Information, Issue 3, 1980-01-01, 23 pages

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