Cisco Systems CISCO1841-HSEC/K9-RF Configuring Serial Connections, Serial DTE or DCE Devices

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Chapter 5 Cable Information and Specifications for Cisco 1800 Series Routers (Modular)

Preparing to Connect to a Network

See Cisco Modular Access Router Cable Specifications for information about Ethernet cables, connectors, and pinouts.

Serial Connections

Serial connections are provided by serial WAN interface cards (WICs). For more information on WICs, see Installing Cisco Interface Cards in Cisco Access Routers.

Before you connect a device to a serial port, you need to know the following:

•Type of device—data terminal equipment (DTE) or data communications equipment (DCE)—that you are connecting to the synchronous serial interface

•Type of connector—male or female—that is required for connecting to the device

•Signaling standard that is required by the device

Configuring Serial Connections

The serial ports on the serial WICs use DB-60 connectors. Serial ports can be configured as DTEs or DCEs, depending on the serial cable used.

Serial DTE or DCE Devices

A device that communicates over a synchronous serial interface is either a DTE or DCE device. A DCE device provides a clock signal that paces the communications between the device and the router. A DTE device does not provide a clock signal. DTE devices usually connect to DCE devices. The documentation for the device should indicate whether it is a DTE or DCE device. (Some devices have a jumper that allows you to select either DTE mode or DCE mode.) Table 5-1lists typical DTE and DCE devices.

Table 5-1

Typical DTE and DCE Devices

 

 

 

 

Device Type

 

Gender

Typical Devices

 

 

 

 

 

DTE

 

Male1

•

Terminal

 

 

 

•

PC

 

 

 

 

 

DCE

 

Female2

•

Modem

 

 

 

•

CSU/DSU

 

 

 

•

Multiplexer

 

 

 

 

 

1.If pins protrude from the base of the connector, the connector is male.

2.If the connector has holes to accept pins, the connector is female.

Signaling Standards Supported

The synchronous serial ports available for the router support the following signaling standards: EIA/TIA-232, EIA/TIA-449, V.35, X.21, and EIA-530. You can order a Cisco DB-60 shielded serial transition cable that has the appropriate connector for the standard you specify. The documentation for the device that you want to connect should indicate the standard used for that device. The router end of the shielded serial transition cable has a DB-60 connector, which connects to the DB-60 port on a serial WIC. The other end of the serial transition cable is available with a connector appropriate for the standard that you specify.

Cisco 1800 Series Routers (Modular) Hardware Installation Guide

 

OL-5876-03

5-3

 

 

 

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Contents Text Part Number OL-5876-03 Americas HeadquartersCopyright 2005-2008 Cisco Systems, Inc. All rights reserved Interfaces on the Cisco 1861 Integrated Services Router Site Log LED Indicators Modular Objectives Organization AudienceTitle Description Conventions Safety WarningsConvention Description Bewaar Deze Instructies Avvertenza Importanti Istruzioni Sulla Sicurezza Warnung Wichtige SicherheitshinweiseAviso Instruções Importantes DE Segurança Spara Dessa Anvisningar GEM Disse Anvisninger OL-5876-03 Related Documentation Duration of Hardware Warranty Cisco One-Year Limited Hardware Warranty TermsTo Receive a Return Materials Authorization RMA Number Replacement, Repair, or Refund Policy for HardwareSearching for Cisco Documents OL-5876-03 Overview of Cisco 1800 Series Routers Modular Product Serial Number Location, Hardware FeaturesInterfaces Product Serial Number LocationCisco Product Identification Tool Interfaces on the Cisco 1841 Router Interfaces on the Cisco 1861 Integrated Services RouterDescription Label Memory Removable and Interchangeable ModulesModel CompactFlash Memory Interface Cards AIMs Description Specification LED IndicatorsColor Description Location Real-Time Clock Chassis VentilationChassis Security Chassis ViewsSlot Number Slot Type Interface NumberingExample Interface Numbering on the 1861 Integrated Services Router Regulatory Compliance SpecificationsOL-5876-03 Safety Recommendations Safety with Electricity General Site Requirements Power Supply ConsiderationsPreventing Electrostatic Discharge Damage Site Configuration Installation ChecklistSite Environment Task Verified by Date Site LogItems in the Box for the Cisco 1841 Router Inspecting the RouterAssembly hardware screws OL-5876-03 Plug-In Components Internal ComponentsInterfaces on the Cisco 1861 Integrated Services Router Setting the Chassis on a Desktop Setting Up the Chassis1shows the brackets Attaching Rack-Mount BracketsMounting the Chassis in a Rack Typical Installing the Router in a RackChassis Grounding Wall-Mounting the ChassisWall-Mounting the Cisco 1841 Router Wall Router Mounting screws Wall-Mounting the Cisco 1861 Integrated Services Router Wall-Mount Bracket for Power Supply Rack-Mounting the Cisco 1861 Integrated Services RouterBrackets for Rack-Mounting Power Supply Installing the Chassis Ground Connection 11 Chassis Ground Connection on the Cisco 1841 Router 12 Attaching the Ground Wire to the Chassis OL-5876-03 Console Port Connections Console and Auxiliary Port ConsiderationsAuxiliary Port Connections Preparing to Connect to a NetworkEthernet Connections Serial DTE or DCE Devices Configuring Serial ConnectionsSignaling Standards Supported Serial ConnectionsAsynchronous/Synchronous Serial Module Baud Rates Distance LimitationsDistance for CSU/DSU Connections Isdn BRI ConnectionsLow-Capacitance Cable OL-5876-03 Series Routers Modular Power ConnectionsPorts and Cabling Connecting WAN and LAN CablesPort Type, Color Connected to Cable Connection Procedures and Precautions Connecting to a Console Terminal or ModemConnecting to the Auxiliary Port Connecting to the Console PortConnecting a Modem to the Router OL-5876-03 Routers Modular Powering Up Cisco 1800 Series RoutersPower-Up Procedure Checklist for Power UpYourname con0 is now available Press Return to get started Color Status Verifying the LED Indicators on the 1841 RouterInitial Configuration of the Router Verifying the Hardware ConfigurationInitial Configuration Completing the Configuration Verifying the Initial ConfigurationCisco Router and Security Device Manager Description Benefits Powering up the Cisco 1861 Integrated Services RouterDescription Benefits Problem Solving Troubleshooting Cisco 1800 Series Routers ModularFault Indications Troubleshooting the Power and Cooling SystemsNormal Indications Environmental Reporting Features Troubleshooting Cables, Connections, and Interface CardsReading LEDs FDX System MessagesMore Troubleshooting Help Recovering a Lost PasswordExplanantion Installing WICs, VWICs, and HWICs Cisco Interface Cards Installation GuideRelated Product Documentation Card guides Interface card Page OL-5876-03 10-1 Replacing CompactFlash Memory Cards10-2 Using the Compact Flash GuardInstalling a CompactFlash Memory Card Removing a CompactFlash Memory Card10-3 10-4 11-1 Opening the Chassis Modules Internal to the Cisco 1841 Router11-2 Removing the Chassis Screw 11-311-4 Locating Modules11-5 Installing a Sodimm11-6 Installing an AIM11-7 Accessory Kit to UseInstallation Procedure Cisco Part Number TypeLocation of Metal Standoff Attachment Locations 11-8Plastic Standoff Orientation 11-911-10 Connecting the AIM to the System BoardApplying the AIM Label Closing the Chassis11-11 11 Closing the Chassis 11-12IN-1 ACT LEDIN-2

CISCO1841-HSEC/K9-RF specifications

The Cisco Systems CISCO1841-HSEC/K9-RF is a versatile and robust router designed to meet the demands of small to medium-sized businesses and branch offices. This model is part of the Cisco 1800 Series Integrated Services Routers, which are known for their performance, security features, and scalability, making them ideal for organizations seeking to enhance their network infrastructure.

One of the main features of the CISCO1841-HSEC/K9 is its modular architecture. This design allows businesses to customize and expand their networks according to changing needs by adding various modules and interfaces. The router supports multiple WAN interfaces, which include serial, Ethernet, and DSL, providing flexible connectivity options to accommodate various networking scenarios.

The CISCO1841-HSEC/K9 also boasts an integrated security architecture. This router is equipped with advanced security features, including firewall capabilities, VPN support, and intrusion prevention systems. These technologies ensure that data is protected while being transmitted across the network. The built-in security features help organizations safeguard sensitive information against potential threats and cyberattacks.

In terms of performance, the CISCO1841-HSEC/K9 is powered by a high-speed processor and dynamic routing capabilities, which allow it to efficiently handle high volumes of traffic without compromising performance. The router supports various routing protocols, including EIGRP, OSPF, and BGP, facilitating seamless data flow and efficient route management.

Another noteworthy characteristic of the CISCO1841-HSEC/K9 is its support for voice and video services. This capability enables businesses to deploy unified communications applications, such as VoIP and video conferencing, enhancing collaboration among team members and improving overall productivity.

Moreover, the router is designed for easy management and monitoring. Cisco’s IOS software provides a user-friendly interface, allowing network administrators to configure, operate, and troubleshoot the network with ease. The router also supports Cisco’s Smart Install feature for simplified deployment and management.

In summary, the Cisco Systems CISCO1841-HSEC/K9-RF is a powerful and adaptable router that combines security, flexibility, and performance. Its modular design, robust security features, support for various routing protocols, and capabilities for multimedia applications make it a compelling choice for businesses looking to enhance their network infrastructure while addressing current and future demands.
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