
          F R E E  U P  Y O U R  P H O N E  L I N E S !

           JEC TECH is introducing a new automated Telephone
     line Simulator which will allow you to tie two modems
     together locally without using phone lines.  THE LINKER
     ($149.95) was specifically designed to link modems
     automatically  making testing as easy as 1, 2, 3.

     (1) First, plug the send modem into the RJ-11 jack
     you've designated as the "send" jack and plug the modem
     under test into the "receive" jack.

     (2) Next, select the AUTOMATIC mode and either 20 or 60
     Hertz ringing.  The 20 Hertz is probably the best
     choice.
     
     (3) And finally, give the send modem the ATDTXXXXX
     command to dial out.  Use any number you like since it's
     not going anywhere.


          Once the send modem goes off hook, dialtone is
     automatically applied to the send modem and ringing is
     automatically applied to the receive modem.  When the
     receive modem answers, it swaps tones with the send unit
     and connects.  Simply proceed just as if you had made
     the connection over real phone lines.

          By the way, THE LINKER works just as well with
     voice dial up devices (like voice mail systems or call
     directors), fax machines, answering machines, and full
     featured phones.  In fact, you can test or demonstrate
     just about any device normally connected to the switched
     network!


              What follows is a crude attempt to show you the
          front panel layout of THE LINKER.  It's not great,
          but it's the best I can do using ASCII.

            ________________________________________________
           I                                                I
           I   _#1__             THE             __#1__     I
           I   RJ11             LINKER             RJ11     I
           I    JK                                 JK       I
           I   -----                              -----     I
           I     A                                  B       I
           I            A=SEND           B=RECV             I
           I                   <- #2 ->                     I
           I            B=SEND           A=RECV             I
           I                                                I
           I PUSH FOR   AUTO     LINE      20 HZ  PUSH FOR  I
           I    #3       #4       #5         #6      #7     I
           I DIALTONE   MAN     STATUS     60 HZ   RINGING  I
           I------------------------------------------------I


        #1 - Standard RJ-11 jack to plug any telephone
             interconnected device into.  It could be a
             telephone, answering machine, fax machine, modem
             or any dialup device using a modem as the
             interface.

        #2 - Standard DPDT toggle switch to reverse the
             function of the A and B RJ-11 jacks.  When the
             toggle is thrown to the left, the A jack is the
             send and the B jack is the receive.  With the
             switch thrown to the right, the B jack is the
             send and the A jack is the receive.

        #3 - Push button switch to activate dialtone.  This
             push button switch works in both the AUTOMATIC
             and MANUAL mode.

        #4 - Standard SPST toggles to select either
             AUTOMATIC or MANUAL generation of dialtone and
             ringing.  In the AUTOMATIC mode, as soon as the
             device plugged into the RJ-11 jack which you
             have designated to be the send jack goes off
             hook, dialtone is automatically applied to the
             send device and ringing is automatically applied
             to the device plugged into the receive jack.
             This feature is very handy when linking modems
             and fax machines.  In the MANUAL mode, the two
             push button switches (#3 & #7) are used to
             generate dialtone and ringing.

       #5 -  LINE STATUS indicator.  This is a T1-3/4 bi
             polar green/orange LED.  With everything on
             hook, this indicator shows a high intensity
             green.  When the device plugged into the send
             jack goes off hook, the color changes to orange.
             When the receive device goes off hook, the
             brightness dims but the color remains orange.
             The color becomes a bright orange during ringing
             and it flashes at the ringing rate.  Note that
             60 Hertz ringing will appear as a steady
             brightness because the LED cannot respond to
             this faster ringing frequency.

        #6 - Standard SPST toggle switch to select the
             desired ringing frequency.  Either 20 or 60
             Hertz can be selected.

        #7 - Push button switch to activate ringing.  The
             actual ringing frequency is determined by the
             setting of switch #5.

         We have an eight (8) page catalog describing THE
         LINKER in more detail plus it has real pictures to
         give you a better idea of what it looks like.  The
         catalog also describes our other products like THE
         PHONE HELPER ($89.95) and THE LOOPER 2 ($99.95) as
         well as two compact ring generator modules that
         would be easy to incorporate into any project
         needing on board ringing capability.

         Write today for your free catalog.  If you don't
         want to write, call our 24 hour order line and tell
         us you want the catalog.  Leave your name and
         address and it will go out the next day!

         Use my personal internet Email address for any
         questions or requests for a catalog.

                       john.carter@uni.com

                          J E C   T E C H
                       13962 OLDE POST ROAD
                      PICKERINGTON, OH 43147
                 24 HOUR ORDER LINE (614) 927-3495
                 24 HOUR FAX LINE   (614) 927-3494

                VISA & MASTER CARD ORDERS HANDLED BY:
                        AUTHORIZED CELLULAR
                          (513) 235-1600

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