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pdf 534-500-901-WESCOM 7371 REPEATER Popular

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534-500-901-WESCOM_7371_REPEATER _bc.pdf

534-500-901-WESCOM 7371 REPEATER

pdf 534-900-502-WESCOM 7375 REPEATER Popular

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534-900-502-WESCOM_7375_REPEATER_bc.pdf

534-900-502-WESCOM 7375 REPEATER

pdf 8642-8643-2W-4W-6-Key-Telephone-Set Popular

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8642-8643-2W-4W-6-Key-Telephone-Set_bc.pdf

8642-8643-2W-4W-6-Key-Telephone-Set

pdf 8642-8643-Schematics Popular

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8642-8643-Schematics_bc.pdf

8642-8643-Schematics

pdf Practice 2W 4W Keysets 0975 Popular

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Practice_2W_4W__Keysets_0975_bc.pdf

Practice 2W 4W Keysets 0975

pdf Wescom 040-100-205 I5 Feb78 - 401 Dual Line Amplifier Popular

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Wescom 040-100-205 I5 Feb78 - 401 Dual Line Amplifier.pdf

Wescom 040-100-205 I5 Feb78 - 401 Dual Line Amplifier
401 Dual Line Amplifier. Contributed by Henry Giese, scanned by Josh Alberts.

pdf Wescom 040-100-205 I5 Feb78 - 401 Dual Line Amplifier Popular

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Wescom 040-100-205 I5 Feb78 - 401 Dual Line Amplifier.pdf

Wescom 040-100-205 I5 Feb78 - 401 Dual Line Amplifier
Contributed by Henry Giese. Scanned by Josh Alberts.

pdf Wescom 402-4020-101 3 I3 Oct76 - 402 4 Wire Line Termination Module and 4020 Loopback Subassembly Popular

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Wescom 402-4020-101-3 I3 Oct76 - 402 4-Wire Line Termination Module and 4020 Loopback Subassembly.pdf

Contributed by Henry Giese. Scanned by Josh Alberts.

pdf Wescom 405-101 Combination Pickup Relay Popular

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Wescom 405-101 Combination Pickup Relay.pdf

Wescom 405-101 Combination Pickup Relay
Wescom 405-101 Combination Pickup Relay practice.

This Wescom card shows how to integrate 4-wire sets into key telephone systems.

The 6842 and 6843 telephone sets are normal 565 or 2565 5-line key sets with an added relay. The relay, when activated, moves the handset receiver from the 425 network and connects it to a separate pair. The Wescom 405 card is the interface with the 4-wire circuit. The key telephone works normally with 1A2 KSUs with 2-wire lines. If the button for the 4-wire line is selected the set becomes a 4-wire telephone.

pdf Wescom 405-101-3 I3 Aug76 - 405 Combination Pickup Relay and Station Circuit Popular

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Wescom 405-101-3 I3 Aug76 - 405 Combination Pickup Relay and Station Circuit.pdf

Contributed by Henry Giese. Scanned by Josh Alberts.

pdf Wescom 406-101-3 I2 Mar71 - 406 Ringdown Signaling Circuit Module Popular

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Wescom 406-101-3 I2 Mar71 - 406 Ringdown Signaling Circuit Module.pdf

Contributed by Henry Giese. Scanned by Josh Alberts.

pdf Wescom 408-101-3 I3 Sep76 - 408 Time Out and Flasher Popular

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Wescom 408-101-3 I3 Sep76 - 408 Time-Out and Flasher.pdf

Contributed by Henry Giese. Scanned by Josh Alberts.

pdf Wescom 417-101-3 I1 Mar71 - 417 Dual Voice Operated Switch Module Popular

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Wescom 417-101-3 I1 Mar71 - 417 Dual Voice Operated Switch Module.pdf

Contributed by Henry Giese. Scanned by Josh Alberts.

pdf Wescom 441-442-101-3 I1 Apr71 - 441 and 442 Terminating Sets Popular

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Wescom 441 442-101-3 I1 Apr71 - 441 and 442 Terminating Sets.pdf

Contributed by Henry Giese. Scanned by Josh Alberts.

pdf Wescom 451-00-05 I3 Common F Signaling Schematic Popular

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Wescom 451-00-05 I3 Common F Signaling Schematic.pdf

Wescom 451-00-05 I3 Common F Signaling Schematic

Contributed by Henry Giese. Scanned by Josh Alberts.

pdf WESCOM 459-101-3 459 FRD Inband Signaling System Popular

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WESCOM_459-101-3_459_FRD_Inband_Signaling_System.pdf

WESCOM 459-101-3 459 FRD Inband Signaling System

[Archived] Contributed by Steve Cichorsky.

pdf WESCOM 459-101-3 459 FRD Inband Signaling System Ocr R Popular

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WESCOM_459-101-3_459_FRD_Inband_Signaling_System_ocr_r.pdf

WESCOM 459-101-3 459 FRD Inband Signaling System Ocr R

Contributed by Steve Cichorsky.  OCR by Clint Gilliland.

pdf Wescom 665-101-3 I2 Dec72 - 665 FWA E&M SF Signaling Unit Popular

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Wescom 665-101-3 I2 Dec72 - 665 FWA E&M SF Signaling Unit.pdf

Contributed by Henry Giese. Scanned by Josh Alberts.

pdf Wescom 6883-6884-6885-101-3 I2 Nov75 - 6883 6884 6885 Terminating Sets Popular

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Wescom 6883-6884-6885-101-3 I2 Nov75 - 6883 6884 6885 Terminating Sets.pdf

Contributed by Henry Giese. Scanned by Josh Alberts.

pdf Wescom 730-101-3 I1 Sep72 - 730 Dual Repeat Coil Popular

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Wescom 730-101-3 I1 Sep72 - 730 Dual Repeat Coil.pdf

Contributed by Henry Giese. Scanned by Josh Alberts.

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Thanks for new documents from Jim Hurtle, Ed Palazzo, Paul Fassbender, Bruce Patterson, Remco Enthoven, Jon Kolger, Paul Ivester, Len Hicken, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Alan David, Dennis Hock, and Tim Griffin.

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