95 lines
4.6 KiB
Plaintext
95 lines
4.6 KiB
Plaintext
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# #
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____ ___ ______ __ ______ __ __ __ ___
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/ / / / / > / /___/ / > /__> /__> /_
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<___/ <___ / <__/ / / / <__/ / \ / <___
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P R O D U C T I O N S
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Presents
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_______________________________________________________________________________
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Making a Global Hold/Mute Switch
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_______________________________________________________________________________
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First of all, I will tell you a little about what this unique device can
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do. Say for instance you are making a confidential call, and someone picks up
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another extension. Simply hit the switch and all the phones connected to your
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same line will go dead. Hit the switch again and you are back to your original
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conversation. As you can see, no more worrying about privacy. This can also
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be used as mute, but it's more powerful as it affects all the phones on a line.
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Do you sometimes want to take the phone off the hook, but you don't want to be
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bothered with the ear-piercing noise that is generated by the telco when the
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phone is off-hook, or you think that a phone lying off-hook is unsightly? Then
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just flick the switch when the phone is in its normal position, and when you
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are ready to recive calls you can flip it back. There are many other uses for
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this device, and I'm sure that you can find many more to fit your individual
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needs.
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Parts/Equipment List
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--------------- ----
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Mini LED, size T-1, Radio Shack Cat. No. 276-026[Red], 276-037[Green]
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Submini SPST toggle, Radio Shack Cat. No. 275-324
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100 k resistor, Radio Shack Cat. No. 271-045
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40 Assorted Solder Lugs, package, Radio Shack Cat. No. 64-3029
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Some assorted scraps of wire
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Power drill
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Solder gun
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Flatblade screwdriver
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At current Radio Shack prices, this project should cost you $5.76 to build two
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top-of-the line models! [tax not included]
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Assembly
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--------
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Be sure to unplug the phone from the wall before going further! Take the
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plastic lid off the phone by unscrewing the two screws on the bottom. Now look
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at the cord that goes into the phone from the wall. You'll see four wires, a
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red, green, black, and yellow. The only two we will be needing is the red and
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green. Now unscrew the red and green wires from their bases. Touch the red
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wire to one end of the resistor and the green wire to the other end. Now plug
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the phone in and pick up the reciever. There should be no dial tone. If you
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get a dial tone, go back and check your procedures. If you don't get one, then
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continue. Next solder a lug to one end of the the resistor, and solder another
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lug to an end of a 4" piece of wire. Now solder the free end of the resistor
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to one pole of the switch. Next solder the correct end of the LED [check the
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poles] to the switch, and the other end solder to the free end of wire. Now
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screw one lug to the base of the green wire [make sure the wire is on it, too]
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and screw the other lug to the other base and corresponding wire. Plug in the
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phone, and pick up the reciever. You should get a dial tone, and by flicking
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the switch to ON, the phone should go dead and the LED should go on. If the
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LED doesn't go on, you've reversed the poles, so take it off and put it back on
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the other way. After you get it to work, find a position on the base that it
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can properly fit. Now drill a hole on the side of the plastic lid where it can
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fit the LED, and another one next to it to fit the toggle switch.
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Illus. 1 red/green base
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_______
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lug | base |
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_ | in | _ resistor
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w /---<_ (_)phone(_) _>------/\/\/\/\/\-----\
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i | |_______| |
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r | \
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Illus. 2 ____ reciever e | \
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| \--------------------------------(O)--------/ swi
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\-> __ LED tch
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front __ / /\,
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of --> / (__) |
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phone / _/ |
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(_/_____o=| <-- the "o" is the hole for the LED, the "=" is the switch
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hole.
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Insert the LED and switch through their corresponding holes, and place the lid
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back on the phone. Plug in the phone, and voila! Your very own Global Mute/
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Silence Switch.
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--The Cruiser
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-3/15/87-
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