

                           
                    Hayes - ᮢ⨬ 


       裡          -  㥬  裡
                              -  ﭭ  裡

     প ⠭⮢     -  CCITT V.22 bis
                              -  CCITT V.21  A,B
                              -  CCITT V.21
                              -  BELL  212A, BELL 103

      ࠡ             -  ᨭ஭ (-2,5 ... +1,3%)
                                 2400  bit / s
                                 1200  bit / s
                                  600  bit / s
                                  300  bit / s
                              -  ᨭ஭ ( +/- 0,01%)
                                 2400  bit / s
                                 1200  bit / s
                                  600  bit / s

     ଠ                   -  9, 10  11 ⮢, ᮤঠ 
     ( ᨭ஭ )             , ⠭   ஫

      樨            -  CCITT V.22 bis
                                 CCITT V.22
                                 BELL  212A
                                 ୠ   (QAM)

                              -  CCITT V.21
                                 BELL  103
                                  ⮩ (FSK)

     騥           -  V.22 bis, V.22, 212A
     뢠騩  (ORIGINATE)    -  1200 Hz
     ⢥騩  (ANSWER)       -  2400 Hz

                              -  V.21
                                   ()  -  1180
                                         ()  -   980
                                   ()  -  1850
                                         ()  -  1650

                              -  BELL 103
                                   ()  -  1070
                                         ()  -  1270
                                   ()  -  2025
                                         ()  -  2225

     ᪠
     ⪫        -  +/- 0,01%

     ⭠          -  500  1800 Hz

     ଠ             -   ᫮ : 9, 10  11
                                 ⮢ (  ⮬ ,
                                 ⠭  ⭮)
                              -    ᫮: 10 ⮢

                -  ஢ ᨣ  - -9 dB
                              -  ஢ ᨣ  - -11 dB
                              -  ⥫쭮 ᨣ - 70 ms

               -  ⥫쭮  - 100 ms
                              -  ᭠  - 10 Hz
                              -  ⥫쭮 뢠 
                                 ࠬ - 650 ms

     堭             -  > 13 dB

                 -  600 Om
     ⥪ ᨣ   -   > 50 kOm
                              -  ⢨⥫쭮 > 25 V
                              -   > 19 Hz
                              -  ६ ⢨ > 150 ms

     ᪨ ࠬ ᨣ 몠 C2 ( RS-232C )
     室 殮  .............................. +/- 3V  -  +/- 15V
     室 ᮯ⨢  ........................... 3kOm  -  7kOm
     室 殮  㧪  3 - 7 kOm  ...... 7,5V +/- 2,5V



                            ᠭ Hayes 

         1.1 饥 ᠭ  Hayes'a

            稭 䨪ᮬ AT ( At, aT, at)  -
      <CR>.   ᪮쪮 ᪫祭,   ᠭ -
     .       । 宬 ⭮   (ନ-
     ).   ⮬᪨ ࠨ ᢮ ᪮ ।  
     ଠ   ࠬࠬ ନ.
         ⮡   ᪮  ,    ।   
     ப 襭 <CR>  ନ.   ᮣᨥ  
       ⢥砥 OK.    ꥤ   ப,
      襭 ᭮   ப    ஡,  
     .: AT DP 8W (044) 430-49-00,
             祬 ATDP8W0444304900.

          ப  ᮤঠ    40  ᨬ,  ᪫
     ஡  䨪 AT.  砥, ᫨ ப  40 ᨬ, 
     頥 ⢥ ERROR     ப.  ஢
     訡 ᨬ    ப ⢫   
     <Backspase>.   ࠢ쭮    ᯮ    
     ⢥砥 OK.    ஥  । ⢥  ଥ -
     ஢  (㤮  ணࠬ 㦨 ).  ⢥
      -  㧭 .
         ᫥ 祭  ( ࠢ) ஥  ।  ⢥ 
     ᨬ쭮 .


         1.2 ᭮  

     AT  - 砫 (䨪)  ப.
              ᫥ 祭 ⮩   ⮬᪨ ࠨ
           ᪮ ।  ଠ   ࠬࠬ ନ.

     A   - 筮 ⢥.
               ४砥     ०  ० -
            ᨣ 饩 뢠饣 .
              ᫥ 祭  ᨣ  饩,   ॠ 楤
           ⥫쭮 ⢥  맮     ४祭 
           楤 ⮬᪮ ⢥.
              ᫨  ࠡ⠥  뤥  裡,    ⢥砥
           饩  㪠 .   ⮬ 砥 ᫨ ⮬᪨
           ⢥ (auto-answer) 몫祭 (S0=0)  ந室 맮,    
           祭 裡  ।  ATA.

     A/  -   ।  ப.
                 䨪 (AT)   <CR>.

     Bn  - 롮 㭨樮 ⠭:
              n = 0 CCITT V.21, V.22, V.22 bis,
              n = 1 BELL 103/202A.

     Ds  - ⮬᪨  .
              ᫥ 祭  ⮩ ,   稭   
            祭 裡 室  ० ।.
               ⮨  ⥫䮭 ,   ⠢ ண -
            室 ᫥騥 ࠢ騥 ࠬ:
              s = P   砥,   ⥫䮭  騥 ᫥
                      ᨬ P    ᭮ (ᯮ-
                       ᨬ 0-9 ).
              s = T   砥,   ⥫䮭  騥 ᫥
                      ᨬ T      ⮩ (ࠧ襭
                      ᯮ짮 ᨬ 0-9, A-D, *  ⠪ #).
              s = ,   砥  । ஬ ᫥饩  (2s).
              s = ;   ᫨ ਬ  ᫥    ப,
                        ᫥    室    
                      ० ࠡ.
              s = @     5-ᥪ㭤 設  ,  ᫨ 
                         祭 30s (ᮤন ॣ S7), -
                       ⪫砥,  ⢥砥 NO ANSWER.
              s = !   ᫨  ! ⮨ ।  ᫥⥫쭮 -
                      ,  室   ﭨ  ON  HOOK  (
                      㡪)  0,5s,  ⥬ ᭮ ३   ﭨ
                      OFF HOOK (᭨ 㡪).
              s = S    ࠥ ⥫䮭  ᠭ
                        EEROM.
              s = R      ᫥  ᨬ   ப,
                      ⠭    ᫥        ०
                      "answer",  ⮫쪮  ⮬ 砥, ᫨  
                        "originate".
              s = W     ⢥ ⠭樨 ( 㤮) । -
                      訬 ஬  ⥫䮭   (ਬ 室 
                      ⮬ 㣮த ).

     En  - ⭮  ON/OFF.
              ᫥  E1  頥    ।-
            ,    㧭,  ⢨⥫쭮 ࠡ⠥ -
            .
               E0   㭪.
              n = 0    몫祭,
              n = 1    祭

     Hn  - ࠢ .
               ᯮ  ०  ᥣ   砭 ⥫䮭
           裡:
              n = 0   ⪫祭   ,
              n = 1   祭   .

     In  - ந⢥   ஫쭠 㬬:
              n = 0   ᮮ饭 ᮤ த,
              n = 1    ஫쭮 㬬 ணࠬ ᮤঠ饩
                       ROM (EPROM),
              n = 2    ஢ ﭨ ७  ROM  -
                      頥 ᮮ饭 OK  ERROR.

     Ln  - ⠭ ஬ ᨣ ஥  (஬⥫).
              n = 0,1 
              n = 2   ।
              n = 3   ᮪

     Mn  - ࠢ  (஬⥫).
              n = 0    몫祭,
              n = 1    祭 ⮫쪮  ६     몫-
                      砥 ᫥ 㦥 饩,
              n = 2    祭  ६,
              n = 3    砥 ᫥  ᫥  
                       몫砥 ᫥ 㦥 饩 ⢥饣
                      .

     Qn  - ࠢ ⢥⮬ .
              n = 0   ⢥ 祭,
              n = 1   ⢥ 몫祭.
              ᨬ  ﭨ Q0  Q1  ᥣ  ᮮ頥  -
           ঠ S-ॣ஢,  த, ஫ 㬬  १-
             (ᬮ  S, I,  ⠪ &T).

     O   - ᫥ 宦 ,   ࠨ  ०  ।
              ⢥砥 CONNECT (᫨  ⮣  室  
           ० ࠡ).

     Sr  - ࠢ S-ॣࠬ.

     Sr? - 뢠 ᮤন S-ॣ  r.

     Sr=nnn -  ᫮ ࠬ nnn  S-ॣ  r.
                   ᮤন     S--
           ஢.  S-ॣ ᮤঠ ६ ࠬ,  -
              ⮫쪮  S.

     Vn  - 롮  ⢥ .
              n = 0   ⢥ ஢ ,
              n = 1   ⢥  ᨬ쭮   ᪮ 몥.

                      ⠭  ⢥⮢ 

     ⢥             ⢥                祭
      ᨬ쭮      ஢             ⢥
                   
  

    OK                  0              믮 

    CONNECT             1              祭  ᪮ 300bps
                                      ᫥  X0  ࠡ 
                                      ᪮ 600, 1200, 2400 bps.

    RING                2              㦨 ࠢ ᨣ
                                      . ⢥ 뤠 ᥣ, -
                                      ᨬ  ० ࠡ.

    NO CARRIER          3                  稫
                                      ⢥  㤠 .

    ERROR               4             訡   ப. 
                                      ப  40 ᨬ, 
                                      訡  ஫쭮 㬬 (ᬮ
                                       L2).

    CONNECT 1200        5              祭  ᪮ 1200 bps,
                                      (ᬮ  X1, X2, X3, X4).

    NO DIALTONE         6             ⢨ ᨣ ⠭樨 樨
                                      (ᬮ  X2, X4).

    BUSY                7              () .

    NO ANSWER           8             ⢥ 砥  砥 ᯮ짮
                                        ப ࠢ饣 ᨬ
                                      @  ᫨  믮 ᫮ - 5s -
                                      設 (  D).

    CONNECT 600         9              祭  ᪮ 600 bps,
                                      (ᬮ  X1, X2, X3, X4).

    CONNECT 2400       10              祭  ᪮ 2400 bps,
                                      (ᬮ  X1, X2, X3, X4).
  

     Xn -  롮 㯯 ⢥⮢  易  楤ன  :

                                            X0     X1     X2     X3     X4
     饭  裡                       1      2      2      2      2
      (S6 s)                                         
      ᨣ                             
     । ᨣ ""                      

     饭  裡 1  - 砥,   ᫥ ⠭ 裡
                            ᮮ CONNECT, ᨬ  ᪮ ࠡ.

     饭  裡 2  - 砥,   ᫥ ⠭ 裡
                            ᮮ ᫥騩 ⢥  ᨬ  ᪮-
                             ࠡ:
                           CONNECT, CONNECT 600, CONNECT 1200 CONNECT 2400.
                            ⢥ CONNECT 砥 ࠡ  ᪮
                            ।  - 300 bps.

      (S6 s)     - 砥,   । ஬ ⥫䮭
                            ,  ।  S-ॣ S6
                            ६.
                              ࠭  ॡ ।-
                             ᨣ 業ࠫ । ஬ ⥫䮭
                            .

      ᨣ     - 砥,   㤥  ᨣ
                 ⠭樨 5s   祭 ⮣ ६ 뤠
                            ᮮ饭 NO DIALTONE  ३  
                            ० ࠡ.

     । ᨣ  - 砥,    砥 
     ""         뢠 , 뤠 ᮮ饭 BUSY,
                                ० ࠡ.

     Yn  - ᯮᮡ ⪫祭   .
                ᯮᮡ ⪫祭   :
              - 몭,    ⨢ ᨣ DTR,
              -       㤠  ᨣ 뢠
               ATH0 ࠢ ᨣ 뢠,   4 s.
              n = 0   ⪫砥 몭 (.  &D),
              n = 1   ⪫砥 ᫥ 祭 ᨣ  .

     Z   - 㫥  ( 뢠 䨣  
            NOVRAM).

     +++ - ᫥⥫쭮 室.
               ⮩   ३   ०  ।  
            ० ࠡ   뢠 裡.   -
            設 ।  ᫥ ࠢ ᫥⥫쭮  -
           . 稭 ⮣ ६ ।  ॣ S12
           ( 筮 50 = 1s ).   稭   ASCII,  
             ᫥⥫쭮 室 ᮤন ॣ S2
           ( 筮 43 . '+' ).


         1.3 ⥫   Hayes'a

     &Cn - 㭪 ᨣ DCD.
              n = 0  ᨣ DCD ᥣ ⨢,
              n = 1  ᨣ DCD   ,   ।
                     .

     &Dn - 㭪 ᨣ DTR  ᨭ஭ ० ࠡ.
              n = 0    DTR,
              n = 1     DTR  室   ०
                     ࠡ,
              n = 2     DTR  ४頥 , 몫砥
                     㭪 "auto-answer"  室   ०
                     ࠡ,
              n = 3     DTR  ⮬᪨ ॠ
                      ATZ.  㦨  DTR ᫨ ᨣ
                     DTR   ६ ।  S-ॣ
                     S25.

     &F  -  뢠 ᢮ 䨣 ᠭ  EPROM.

     &Gn - 祭 / 몫祭 ⭮ .
              n = 0  ⭠  몫祭,
              n = 1   뫠   550 Hz,
              n = 2   뫠   1800 Hz.

     &Ln -   裡.
              n = 0  ।  㥬  裡,
              n = 1  ।  ﭭ  裡.

     &Mn - ० ࠡ.
              n = 0  ᨭ஭,
              n = 1   ନ,   ࠡ   ᨭ஭,
                     ⠪   ᨭ஭ ० ࠡ;
                         । ᨭ஭,
                      ।  - ᨭ஭,
              n = 2     ᨣ DTR,  ࠥ 
                     ᠭ  &Z   NOVRAM,
              n = 3   ⨢ ᨣ DTR ந 筮  .
                     ᫥ 祭 ᮥ,   㯫 ᨣ
                     DTR  砥  .

     &Pn - ⠭ ᭮ 樥.
              n = 0  樥  몠/ࢠ 39/61%,
              n = 1  樥  몠/ࢠ 33/67%.

     &Rn - ࠢ ᨬ⥩ RTS/CTS :
              n = 0  ᨣ CTS 㯠 ᫥ ᨣ RTS
                      ਠ   ६ ஢
                     㯫᭮ ० ࠡ.  騥
                      㯫 ᨣ CTS .
              n = 1    RTS,  ⨢ CTS ࠧ ᫥
                     祭 .  ६ ᨭ஭ ।
               ( &M0) ᨣ CTS ᥣ ⨢.

     &Sn - 㭪樨 ᨣ DSR:
              n = 0  ᨣ DSR ⨢,
              n = 1  DSR ⨢, ᫥ 砭 ⠯ ⠭
                     裡.

     &Tn -  .
              n = 0  砭 ⥪饣 ,
              n = 1  砫 ⭮  ⫨,
              n = 2   ᯮ,
              n = 3  砫 ⭮ ஢ ⫨,
              n = 4    ᮣᨥ 砫 ஢ ⫨, 
                     । 㤠 ,
              n = 5     譥 ன ᮣ,
              n = 6  砫 ⠭樮 ஢ ⫨,
              n = 7     RDL,  ⥬   -
                      騩 ᨣ,
              n = 8    易  ७ ⮬.

     &W  -  ⠥ ᢮ 䨣   RAM  뢠 
             NOVRAM.
             S-ॣࠬ   NOVRAM.

     &X  - 롮 ୮ ६  ।.
              n = 0    ᭮ ६ -
                     ᨣ ⠩ 114 (15- ४),
              n = 1   砥 ᭮ ६  ।  -
                      : ᨣ ⠩ 113 (14- ४),
              n = 2   砥 ᭮ ६  ।  ,
                      饩.

     &Z  -  ⥫䮭    NOVRAM,
              (ᨬ 33 ).


         2.0  ᠭ S-ॣ஢.
               ᠭ S-ॣ஢ ।⢥ ᯮ㥬 
     ࠡ  .

               ᠭ ⤥ S-ॣ஢ 㪠  ࠬ:
              -  - 砥  ࠬ஢
                           ࠭塞  S-ॣ.
              - 稭 - 砥  稭 ࠬ,
                           ᠭ  S-ॣ ମ ⮢⥫.

     S0  -  ⢮ ᨣ 
           : 0 - 255
         稭  : 000
         ⢮ ᨣ ,  ண   । ⢥⮬ 
     맮 ⥫䮭 :
         S0 = 0   ⮮⢥ 몫祭
         S0 > 0   ⮮⢥ 祭

     S1  -  稪 ᨣ  (ଠ樮 ࠬ)
           : 0 - 255
         稭  : -------
         ন S-ॣ 㢥稢  ࠧ,   -
     砥 ᨣ   ⥫䮭    祭 8s ᫥ ᨣ-
      ⢥ 뢠.
          ॣ -  ⢥,  ᯮ騩    ଠ樮
     ஫,  ᮤন  ⮫쪮 .

     S2  -   
           : 0 - 255
         稭  : 043 (ASCII '+')
         ন   ᨬ ASCII,      
     ᫥⥫쭮  /ᬮ '+++'/.
          砥,  S2 > 127 ந室 ஢ ᫥⥫쭮
     .

     S3  -   <CR>
           : 0 - 127
         稭  : 013 (ASCII '<CR>'  Ctrl-M (^M))
         ন   ᨬ ASCII,      
     <CR>.

     S4  -   <LF>
           : 0 - 127
         稭  : 010 (ASCII '<LF>'  Ctrl-J (^J))
         ন   ᨬ ASCII,      
      ப <LF>.

     S5  -   <BS>
           : 0 - 32, 127
         稭  : 008 (ASCII '<BS>'  Ctrl-H (^H))
         ন   ᨬ ASCII,      
     "" (backspase) <BS>.

     S6  -  ६   ⠭樨
           : 2 - 255
         稭  : 002 s

     S7  -   ᨣ 饩
           : 1 - 155
         稭  : 030 s

     S8  -  ६ ࢠ  
           : 0 - 255
         稭  : 002 s

     S9  -  ६ ॠ樨 DCD
           : 0 - 255
         稭  : 005   ( x1/10s = 0,6s )
         ६ প ⨢樨 ᨣ DCD ᫥⢨  -
     饩.

     S10 -  প ࠧꥤ ᫥  饩
           : 1 - 255
         稭  : 014   ( x1/10s = 1,4s )

     S11 -   ᯮ

     S12 -  ६ ॡ㥬 設  ᫥⥫쭮 
           : 20 - 255
         稭  : 050   ( x 20ms = 1,0ms )
         ন ॣ ।  1/50s ६ ॡ㥬  設  
     । ।  ᫥ ᫥⥫쭮  (ᬮ '+++').

     S13 -   ᯮ



                               ਫ.

         3.0 䥩 RS-232C

         䥩 RS-232C/CCTTT V.24   ப -
      ⠭⭮  ᫥⥫쭮   பࠬ 
     ਩묨 ன⢠.   (  쭮 
     ) 䥩  RS-232C,  ।  ⠭⮬  樠樨
     ஭ ஬諥 (EIA),  ࠧ㬥 稥 㤮
      ⨯: ନ쭮 DTE  吝 DCE.
         ⮡  ⠢ ᥡ ࠢ쭮 ।⠢  䥩
     RS-232C,  室  ⫨   ࠧ  ⨬ 
     㤮.  ନ쭮 㤮,  ਬ ,  
     뫠    ()  ਭ   ᫥⥫쭮 䥩.
        稢 (terminate) ᫥⥫  裡. -
       㤮,  ਭ  ன⢠, ᯮᮡ 
     ᫥⥫ ।  ᮢ⭮  ନ 㤮-
     . 來 ਬ஬ 吝 㤮 㦨  (-
     ).  㦨 ᮥ⥫   ᫥⥫쭮  -
     窥  ஬  ⥫䮭 .
          ᮦ ࠧ稥  ନ   吝  㤮
     쭮 ᯫ, ⮬   ᫮  -
      ⮣,    ⨯ 㤮 ⭮     ன-
     ⢮. ਬ ਭ,    㤮  ⭥ ?   -
     :   易    ,           
     ନ쭮 㤮?  ⢥    ᫥ ᬮ-
      䨧᪮ ᮥ ன.  ந ⥫ -
        䥩 RS-232C,  ⠢ 吝 㤮-
      㭪樮஢  ନ쭮.  ⮡ ࠧ   ⮬,  
      ᤥ,   㦭  ஠஢  㭪樨  ᨣ  䥩
     RS-232C.


         3.1  䥩 RS-232C.

          ୮    "⠭⭮" ᫥⥫쭮 -
      RS-232C, 饣  25-  9-⠪⭮ ࠧꥬ ⨯ D.
         ନ쭮 㤮  筮 ᭠饭 ࠧꥬ  쪠,
      吝 - ࠧꥬ  ⢥ﬨ (     ᪫祭).

          ਢ 祭  25-  9-⠪⭮ ࠧꥬ ⨯
     D  䥩 RS-232C  ᠭ  㭪権.

                          /                                     / 
                        /                                     /   
                      /  . 1  --  FG                        /  . 1 <-  DCD
         STXD  <-   14. . 2  ->  TxD             DSR  ->  6. . 2 <-  RxD
           TC  ->   15. . 3  <-  RxD             RTS  <-  7. . 3 ->  TxD
         SRXD  ->   16. . 4  ->  RTS             CTS  ->  8. . 4 ->  DTR
           RC  ->   17. . 5  <-  CTS              RI  ->  9. . 5 --  SG
          DCR  ->   18. . 6  <-  DSR                       \     
         SRTS  <-   19. . 7  --  SG                          \   
          DTR  <-   20. . 8  <-  DCD                           \ 
           SQ  ->   21. . 9  --  १ࢨ஢
           RI  ->   22. .10  --  १ࢨ஢
          DRS  <-   23. .11  --   祭
           TC  <-   24. .12  <-  SDCD
    祭 --   25. .13  <-  SCTS
                      \     
                        \   
                          \ 

     
                                   
      ⠪       ࠢ            
      (9-Pin)                           
     
       1           FG           ---      ᭮ ( ⭠ )
       2 (3)     TD(TXD)       DCE      । 
       3 (2)     RD(RXD)       DTE      ਭ 
       4 (7)       RTS         DCE       ।
       5 (8)       CTS         DTE       ।
       6 (6)       DSR         DTE      ⮢ 
       7 (5)        SG          ---      쭠 
       8 (1)       DCD         DTE      㦥 饩 
       9           ---         DTE      ( ⥫쭮 ஫쭮
                                           殮 )
      10           ---         DTE      ( ⥫쭮 ஫쭮
                                           殮 )
      11            QM         DTE       ࠢ
      12          SDCD         DTE      㦥 饩 -
                                          
      13          SCTS         DTE        ।
      14           STD         DCE       ।
                                         
      15            TC         DTE      ஭ ।稪
      16           SRD         DTE       ਭ
                                         
      17            RC         DTE      ஭ ਥ
      18           DCR         DCE       ᨭ஭
                                         ਥ
      19          SRTS         DCE        ।
      20 (4)       DTR         DCE      ⮢ ନ
      21            SQ         DTE      ⢮ ᨣ
      22 (9)        RI         DTE       
      23           ---         DCE      (  ᪮  )
      24            TC         DCE       ᨭ஭ ।稪
      25           ---         DCE      (  )
            ਬ砭:
         1.  (⠪) 11, 18  25 筮  묨.
     ਢ  ⠡ 㭪樨 ⭮   ᯥ䨪  Bell  113B,
     103  208A.
         2.  9  10 ᯮ  ஫ ⥫쭮 (MARK) 
     ⥫쭮 (SPASE) ஢ 殮.
         3.  ⤥  ᯮ    RS-232C  
     ஫  ᯥ樠 㭪権, ⭮  ⭮ 
     (  ᯮ㥬    ⠭   ᨣ).
     


                 3.2   ᨣ.

             䥩 RS-232C
            ࠧ  ᫥騥 .

         ᫥⥫ :-- (ਬ, TXD, RXD). 䥩 RS-232C
     ᯥ稢  ᨬ ᫥⥫  :  ࢨ-
      ()   (ᯮ⥫).      ࠡ-
       㯫᭮ ०.
         ࠢ騥 ᨣ ஢:-- (ਬ, RTS, CTS). 
     ஢ -  ।⢮,    ண  ᨣ -
      DTE    DCE   䠪᪨  ।    ਥ
       ᫥⥫쭮  裡.
          ᨭ஭樨:-- (ਬ,  TC, RC).  ᨭ஭ ०
     ( ⫨稨   ࠭ ᨭ஭)  ன⢠-
      室   ।  ᨣ  ᨭ஭樨,    
     ஫ 楫⭮ ᨣ  楫  ஢.
          ࠪ⨪ ᯮ⥫  RS-232C ਬ ।,   
     ᨭ஭ ०  25  筮 ᯮ ⮫쪮 9.  -
      ਢ .

     
                      
       ⠪      
       (9-Pin)             
     
        1           FG       祭   ⮩ 
                              㤮
        2 (3)     TD(TXD)    ᫥⥫ , ।
                              DTE  DCE
        3 (2)     RD(RXD)    ᫥⥫ , ਭ
                             DTE  DCE
        4 (7)       RTS      ⨢ ஢ ⮣ ᨣ DTE 㪠뢠,
                               "" ᫠   DCE
        5 (8)       CTS      ⨢ ஢ ⮣ ᨣ DCE 㪠뢠,
                             ⮢ ਭ   DTE
        6 (6)       DSR      ⨢ ஢ ⮣ ᨣ DCE ᮮ頥,
                               ⠭
        7 (5)        SG       ࠪ 饣 ᨣ ()
        8 (1)       DCD      ⨢ ஢ ⮣ ᨣ DTE 뢠,
                               ࠡ⠥  DCE  
                               裡
       20 (4)       DTR      ⮢ ନ
     



                 3.3   १ 䥩 RS-232C.

         1. ⠭,   ன⢮  DTE,   DCE. 筮
         ⢥,  ᬮॢ  ࠧꥬ (DTE-  쪠-
     , DCE- ⢥ﬨ).  ᫨  ன⢠,    뢠, -
       䨣樨 DTE,    ࠢ쭮 ࠡ 室  ⮩
      (-).
         ᪮쪮 ਠ⮢ ⮣ .

              25 x 25              25 x 25               25 x 25
         1    1                          1  1
         7    7    7    7     2 Ŀ  2
         2  Ŀ   2    2  Ŀ   2           
               Ŀ                Ŀ           3   3
         3     3    3     3     4 Ŀ  4
         4  Ŀ         4    4  Ŀ         4           
         5           5    5  Ŀ    5     5   5
         6  Ŀ         6                   6 Ŀ        6
         8  Ĵ         8                        7  7
         20          20   8      8     8 Ŀ  8
                                                          
                                                   20  20

              25 x 25               9 x 9               25 x 9
         1    1    5    5    7    5
         2  Ŀ   2    2  Ŀ   2    2    2
               Ŀ                Ŀ          3    3
         3     3    3     3    4    1
         7    7    7  Ŀ         7    5           7
                              8  Ŀ    8    8    8
                                    
              25 x 9                  
         7    5    1      1
         2    2
         3    3

                               Warning !!!
             祭  祣    ࠧꥬ 䥩 RS-232C,  -
     ன⢮   몫祭,    ᪨   (ਬ  
       ⠭).



         2. ஢  ࠢ쭮  ᯮ짮 .   -
     쪮 ࠧ⥩  䥩 RS-232C: , 騩 
      ஢  ()   ନ,   ஢ 
     筮 ᨭ஭ । ,  15 ஢  ᨭ஭ 裡
      25 ஢   ਬ. ᫨  - ᮬ,
      ᯮ짮   25 ஢.
         3. ,     ᫥⥫쭮  ࠢ쭮
      ଠ ᫮  ᪮  묨.
         4.  -  ⠪,     孨᪮ ᠭ,  
     ॡ   - ᯥ樠 ᮥ    ᮢ-
     ⨬ 䥩.    ॠ 䥩 -RS-232C 
     -ᮢ⨬묨 ᨣ. 祢,  ⠪ 䥩 -
       ᮢ⨬   䥩ᮬ RS-232C,   ࠡ  -
     묨 ⮪.



              3.4 饭, 騥  -  檮筮
             .

              aa       anticipated ansvewer
              AAE      Automatic Ansvering Equipment
              ACK      Acknowledge (ASCII)
              ACO      Auto Call Originator
              ACR      Autimatic Call Recorder
              ACU      Automatic Call Unit
              ADC      Analog to Digital Converter
              AK       Akustikkoppler
              AM       Amplituden Modulation
              ARM      Asynchronous Response Mode
              ARQ      Automatic Request to Repeat
              ASCII    American  Standard Code of Information
                       Interchange
              ASR      Automatic Send Receive
              ATN      Attention (IEE 488)
              AV       Avallable
              BCC      Block Check Charster
              BEL      Bell (ASCII)
              bit      binary digit
              bps      bits per second
              BS       Backspase (ASCII)
              BSC      Binary Synchronous Communication
              ca       correct answer
              C-bit    Control-bit
              CAN      Cansel (ASCII)
              CCITT    Comite Consultatif International
                       Telegraphique et Telephonique
              CD       Carrier Detect
              CEPT     Conference Europeene des Administrations
                       Postes et des Telecomunications
              CR       Carriage Return (ASCII)
              CRC      Cyclic Redundancy Check
              DCE      Data Circuit Terminating
                       Equipment
              DEL      Delite (ASCII)
              DTE      Data Terminal Equipment
              dx       duplex
              EBCDIC   Extended Binary Coded Decimal
                       Interchange Codes
              EIA      Electronic Industries Association
              EOT      End of Transmission (ASCII)
              ETB      End of Transmission Block
              ETX      End of Text
              FDX      Full-Duplex
              HDLC     High Level Data Link Control
              ISDN     Integrated Services Digital Network
              ISO      International Standards Organisation
              LF       Linefeed (ASCII)
              NAK      Negative Ackonowledge
              NUI      Network User Identification
              PAD      Packet Assembly-Disassembly Facility
              RS       Recommended Standard (EIA)
              SOH      Start of Heading
              sx       simplex
              SYN      Synchronisieren (ASCII)
              TTL      Transistor-Transistor-Logik
              XMIT     Transmit
              XON      Transmission On
              XOFF     Transmission Off


           :
         Mike Tooley "PRACTICAL DIGITAL ELECTRONICS HANDBOOK"
         PC Publishing, London, 1988


                                                 (C) Karlsson  -  17.07.91


