3Com E3 manual Interface Specifications, Console Port, Ports

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A-2APPENDIX A: TECHNICAL SPECIFICATIONS

Interface

Specifications

Console Port

 

Electrical Specification:

RS-232-C (EIA/TIA-232-E standard)

 

 

 

 

Connector:

RJ-45, 8 position modular jack

 

 

 

 

Configuration:

Data Terminal Equipment (DTE)

 

 

 

 

Transmission Method:

Unbalanced RS-232

 

 

 

 

Transmission Rate:

38,400 bps maximum

Line A and Line B E3

 

 

 

 

 

 

Ports

Electrical Specification:

E3 interface

 

 

 

 

Connectors:

BNC coaxial connectors; one transmit (TX) and

 

 

one receive (RX)

 

 

 

 

Transmission Media:

75 ohm (nominal impedance) coaxial cable

 

 

 

 

Timing Source:

User selectable between:

 

 

Internal

 

 

Network

 

 

 

 

Framing:

ATM Direct Mapping (ADM)

 

 

Physical Layer Convergence Protocol (PLCP)

 

 

 

 

Line Coding:

High Density Bipolar 3 Zeroes (HDB3)

 

 

 

 

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Contents Dual E3 Asynchronous Transfer Mode Dual E3 Asynchronous Transfer Mode 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Page Overview Document ConventionsProduct DescriptionCompatibility Application Card NACInstallation Installation ToolsInstallation Procedure2CHAPTER 2 Installation Installation Procedure 4CHAPTER 2 Installation Network Interface Card Cabling ConsoleAccessing Command Line Interface E3 Port CablingOptions Network InterfaceCards Cascading Multiple NICs in the Same Chassis ATM NICCascading Single NIC’s in a Different Chassis Cascading Multiple NIC’s in a Different Chassis 6CHAPTER 3 Network Interface Card Cabling Regulatory United States Technical SpecificationsCertification Ports Interface SpecificationsConsole Port Current Draw