Cisco DB-60 to DB-60

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serial interface cable DCE-DTE Serial Cable Between Cisco Routers (X.21 Format)

60 pin Cisco DB connector layout 60 pin Cisco DB connector to the Serial Port on Cisco Router

60 pin Cisco DB connector diagram 60 pin Cisco DB connector to the Serial Port on Cisco Router

Serial Port on Cisco Router Pin Name Serial Port on Cisco Router Pin Number Direction Serial Port on Cisco Router Pin Number Serial Port on Cisco Router Pin Name Description
Ground 46 46 Ground Shield Ground
TXD/RXD+ 11 28 RXD/TXD+ Twisted Pair No.3
TXD/RXD- 12 27 RXD/TXD- Twisted Pair No.3
RTS/CTS+ 9 1 CTS/RTS+ Twisted Pair No.2
RTS/CTS- 10 2 CTS/RTS- Twisted Pair No.2
RXD/TXD+ 28 11 TXD/RXD+ Twisted Pair No.4
RXD/TXD- 27 12 TXD/RXD- Twisted Pair No.4
CTS/RTS+ 1 9 RTS/CTS+ Twisted Pair No.1
CTS/RTS- 2 10 RTS/CTS- Twisted Pair No.1
RXC/TXCE+ 26 24 TXC/RXC+ Twisted Pair No.5
RXC/TXCE- 25 23 TXC/RXC- Twisted Pair No.5
Ground 15 15 Ground Circuit Ground
To Local 47 48 48 To Local 47 Ground Mode 2
To Local 48 47 47 To Local 48 Ground Mode 2
To Local 52 51 Ground Mode DCE
To Local 51 52 Ground Mode DCE
Not Used 16 16 Not Used Not Used

Notes

  • This was deduced from two X.21 cables hooked back to back.
  • For DCE side I had to add 2 extra wires (Pins 25,26) not used in X.21, and swapped most pin pairs. I currently use this cable between a Cisco 2520 and a Cisco 1601 at 1.5 Mb/sec.

References

Category:Serial Cables

 

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