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  1. Document 1900
  2. CABLING A TERMINAL FOR DR MULTIUSER DOS
  3. 4/1/92
  4. MG
  5.  
  6. The cable needed to connect a dumb terminal or a PC terminal to
  7. the host machine is an RS-232 Null Modem cable.  The possible
  8. pin configurations are as follows:
  9.  
  10.         25-to-25 pin cable
  11.  
  12. HOST MACHINE         PC/TERMINAL
  13.  
  14. Transmit -  2            3  - Receive
  15. Receive  -  3            2  - Transmit
  16. DSR      -  6            20 - DTR
  17. Ground   -  7            7 -  Ground
  18. DTR      - 20            6 -  DSR
  19.  
  20.         9-to-25 pin cable
  21.  
  22. HOST MACHINE         PC/TERMINAL
  23.  
  24. Transmit -  3            3  - Receive
  25. Receive  -  2            2  - Transmit
  26. DSR      -  6            20 - DTR
  27. Ground   -  5            7  - Ground
  28. DTR      -  4            6  - DSR
  29.  
  30.         25-to-9 pin cable
  31.  
  32. HOST MACHINE        PC/TERMINAL
  33.  
  34. Transmit -  2            2  - Receive
  35. Receive  -  3            3  - Transmit
  36. DSR      -  6            4  - DTR
  37. Ground   -  7            5  - Ground
  38. DTR      - 20            6  - DSR
  39.  
  40.         9-to-9 pin cable
  41.  
  42. HOST MACHINE        PC/TERMINAL
  43.  
  44. Transmit -  3            2  - Receive
  45. Receive  -  2            3  - Transmit
  46. DSR      -  6            4  - DTR
  47. Ground   -  5            5  - Ground
  48. DTR      -  4            6  - DSR
  49.