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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Alcatel > BF, BG, TH, BHx Series

BF, BG, TH, BHx Series Alcatel BF3/4 and also BG3 series, also THx, BHx are located here.

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Old 04-05-2002, 05:28   #1 (permalink)
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Alcatel BF cable schematic here !!


Here is cable schematic for Alcatel BF phones.


Code:
                   Alcatel BF-3, BF4 interface schematic 


     20 (4) |\  |      _____                      |  /|
 DTR o------|  >|-----|_____|-----+----------+----|<  |-----+
            |/  |      100 ohm  + |          |     \ \|     |
                                -----        |              |
                                ----- 2.2uF  |    DZ 2V7    |
                                  |          |            -----
                                -----        |            (GND)
                                (GND)        |         
                                             |     
                          +------------+     |       
                      ____| 1       16 |-----+
                   + |    |            |     | 2.2uF   
                   -----  |            |   -----        
                   -----  |            |   -----        
               2.2uF |____| 3        2 |_____| +                   
                          |            |        | | +            
                     -----| 4        6 |--------| |---+          
                  + |     |            |  2.2uF | |   |          
                  -----   |  MAX3232   |            -----        
                  -----   |            |            (GND)        
              2.2uF |_____| 5          |                        
     3 (2)                |            |                      4  
  RX o--------------------| 7       10 |----------------------o TA_MS (TX)
     2 (3)                |            |                      5
  TX o--------------------| 8        9 |----------------------o AT_MS (RX)
     6 (6)                |            |                      2
 DSR o--------------------| 14      11 |----------------------o AT_RCK
                          |            |            1N4148
     4 (7)                |            |    ____     |\ |     3
 RTS o--------------------| 13      12 |-+-[____]--+-| >|-----o TA_ARQ
                          |            | |  5k6    | |/ |
                          |            | |         |
                          |____________| |      |<-+ E
                                |        |   B ||
                                |        +-----||--+ C
     7 (5)                      |        BC252     |          1
 GND o--------------------------+------------------+----------o GND
                                |                          
 RS 232                         |                       ALCATEL BF3, BF4
 25 (9) pin FEMALE            -----                       phone connector
                                   (GND)  


==================================


               Alcatel BF-3, BF4 Pinout description      


             |                                       |
             |                                       |
             |               BATTERY                 |
             |                                       |
             |                                       |
             |_______________________________________|
             |             |                         |
             |_____________|_________________________|
             |           _______________             |
             |          | O  O  O  O  O |            |
              ---------------------------------------
                          1  2  3  4  5


       1 - GND
       2 - AT_RCK
       3 - TA_ARQ
       4 - TA_MS (Tx)
       5 - AT_MS (Rx)


     WARNING !! 

      All pins voltage levels are 1.8v !!
      Must use MAX 3232 !!

  ==================================
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Old 03-08-2004, 01:42   #2 (permalink)
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I think you may have pins 4&5 on the phone around the wrong way.

Also, a MAX232 does work (I used it on a BF3) but the MAX3232 is probably more reliable running from the lower voltage.
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Old 03-08-2004, 20:27   #3 (permalink)
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thx dear & good work we need new cable pin out
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