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Cisco 3700 Series Multiservice Access Routers

5-in-1 EIA/TIA-232 Assembly and Pinouts

Document ID: 12224

Updated: Mar 04, 2008

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Introduction

This document describes the EIA/TIA-232 cable assembly and pinouts (Data Terminal Equipment - DTE and Data Communications Equipment - DCE).

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

This document is not restricted to specific software and hardware versions.

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Conventions

Refer to Cisco Technical Tips Conventions for more information on document conventions.

EIA/TIA-232 Cable Assembly

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EIA/TIA-232 DTE Cable Pinouts (DB-60 to DB-25)

Note: The arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.

60 Pin*1* Signal Description Direction 25 Pin Signal
J1-50 J1-51 J1-52 MODE_0 GND MODE_DCE Shorting Group -- -- --
J1-46 Shield GND Single -- J2-1 Shield GND
J1-41 Shield TxD/RxD -- Twisted pair no. 5 --> -- J2-2 Shield RxD --
J1-36 Shield RxD/TxD -- Twisted pair no. 9 <-- -- J2-3 Shield RxD --
J1-42 Shield RTS/CTS -- Twisted pair no. 4 --> -- J2-4 Shield RTS --
J1-35 Shield CTS/RTS -- Twisted pair no. 10 <-- -- J2-5 Shield CTS --
J1-34 Shield DSR/DTR -- Twisted pair no. 11 <-- -- J2-6 Shield DSR --
J1-45 Shield Circuit GND -- Twisted pair no. 1 -- -- J2-7 Shield Circuit GND --
J1-33 Shield DCD/LL -- Twisted pair no. 12 <-- -- J2-8 Shield DCD --
J1-37 Shield TxC/NIL -- Twisted pair no. 8 <-- -- J2-15 Shield TxC --
J1-38 Shield TxC/TxCE -- Twisted pair no. 7 <-- -- J2-17 Shield RxC --
J1-44 Shield LL/DCD -- Twisted pair no. 2 --> -- J2-18 Shield LTST --
J1-43 Shield DTR/DSR -- Twisted pair no. 3 --> -- J2-20 Shield DTR --
J1-39 Shield TxCE/TxC -- Twisted pair no. 6 --> -- J2-24 Shield TxCE --
*1* Any pin not referenced is not connected.

EIA/TIA-232 DCE Cable Pinouts (DB-60 to DB-25)

Note: The arrows indicate signal direction: --> indicates DTE to DCE, and <-- indicates DCE to DTE.

60 Pin*1* Signal Description Direction 25 Pin Signal
J1-50 J1-51 MODE_0 GND Shorting Group -- -- --
J1-46 Shield GND Single -- J2-1 Shield GND
J1-36 Shield RxD/TxD -- Twisted pair no. 9 <-- -- J2-2 Shield TxD --
J1-41 Shield TxD/RxD -- Twisted pair no. 5 --> -- J2-3 Shield RxD --
J1-35 Shield CTS/RTS -- Twisted pair no. 10 <-- -- J2-4 Shield RTS --
J1-42 Shield RTS/CTS -- Twisted pair no. 4 --> -- J2-5 Shield CTS --
J1-43 Shield DTR/DSR -- Twisted pair no. 3 --> -- J2-6 Shield DSR --
J1-45 Shield Circuit GND -- Twisted pair no. 1 -- -- J2-7 Shield Circuit GND
J1-44 Shield LL/DCD -- Twisted pair no. 2 --> -- J2-8 Shield DCD --
J1-39 Shield TxCE/TxC -- Twisted pair no. 7 --> -- J2-15 Shield TxC --
J1-40 Shield NIL/RxC -- Twisted pair no. 6 --> -- J2-17 Shield RxC --
J1-33 Shield DCD/LL -- Twisted pair no. 12 <-- -- J2-18 Shield LTST --
J1-34 Shield DSR/DTR -- Twisted pair no. 11 <-- -- J2-20 Shield DTR --
J1-38 Shield RxC/TxCE -- Twisted pair no. 8 <-- -- J2-24 Shield TxCE --
*1* Any pin not referenced is not connected.

Related Information

Updated: Mar 04, 2008
Document ID: 12224