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March Singing Wires is now available in the members login area.

Telephone Collectors International is an organization of telephone collectors, hobbyists and historians who are helping to preserve the history of the telecommunications industry through the collection of telephones and telephone related material. Our collections represent all aspects of the industry; from the very first wooden prototypes that started the industry to the technological marvels that made the automatic telephone exchange possible.

If any of this interests you, we invite you to join our organization. Look around and see what we have to offer. Thanks for stopping by!

Telephone Collectors International
3805 Spurr Circle
Brea, CA 92823

Sample from the March 2015 Singing Wires
Switches and Relays Control His Environment
by TCI Editorial Staff

"I am a dyed-in-the-wool phone person," says Gary Morgan, who recently joined TCI and disclosed with photos and commentaries of his interest in rather unique uses of telephone equipment. "I have a whole house full of vintage Western Electric key sets, a card dialer, call director and even a 300 series key set. I have them all tied together by a custom-built 'cross bar' system." These comments from Gary caught the interest of the SingingWires Editorial Board and it was decided to interview him for a future issue. His interview follows these introductory remarks. Gary says that his system uses two Cunningham cross bar switches to provide 200 and 300 series extensions. The 584 key service panel is toward the bottom of the rack......

For the rest of this story along with many others, access to our Bonus Pages which contain many more photos, online access to all back issues of Singing Wires from 1986 on and many other benefits, join our club. It's easy and it's not expensive.

Sample from the January 2015 Switchers' Quarterly
The 1A ESS Central Pulse Distributor
By Chris Mattingly

The CPD provides strobe, or 'enable' signals needed for any peripheral equipment in the office. Mostly this is for the peripheral switch frames, scanners and signal distributors (circuits that operate and release relays in trunks), to trigger them into taking an order off the communications bus and executing it. It also supplies pulses to set and reset flip-flop circuits in other peripherals, such as intelligent controllers and trunk circuits that use high speed mercury relays. The CPD is near the heart of the office and is an essential piece of equipment.

The peripheral bus that comes from the 1A Central Control does not have the.....

Our Journal for those interested in telephone switching systems, both old and modern. For the rest of this story and online access to all back issues, join our club and add the Switchers' Quarterly option for $5 a year more.

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