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