Cable W 4Port-Multiprotocol/X.21
                        PN71F0164 - 3m    FFC 260
      System End
    8             1        ------------------------------------
   _|_____________|_      |    Mnemonic      | System |_Device |
  | . . . . . . . . |     |                  |  End   |  End   |
   \ . . . . . . . /      |------------------|--------|--------|
     |___________|        |    Shield        |        |        |
    15           9        | T(A) or +TDATA(A)|   2    |   2    |
                          | C(A) or +C(A)    |   3    |   3    |
                          | R(A) or RxD(A)   |   4    |   4    |
                          |------------------|--------|--------|
      Device End          | I(A) or TCLK(A)  |   5    |   5    |
    1             8       | S(A) or +RCLK(A) |   6    |   6    |
   _|_____________|_      |   Signal Ground  |   8    |   8    |
  | . . . . . . . . |     | T(B) or -TDATA(B)|   9    |   9    |
   \ . . . . . . . /      |------------------|--------|--------|
     |___________|        | C(B) or -C(B)    |  10    |  10    |
     9          15        | R(B) or -RxD(B)  |  11    |  11    |
                          | I(B) or -TCLK(B) |  12    |  12    |
                          | S(B) or -RCLK(B) |  13    |  13    |
                          '------------------------------------'