Cisco Systems Using ROM Monitor for Configuration and Verification on Cisco Router
Page 56

Appendix C Using the ROM Monitor

Entering the ROM Monitor Mode

To enter the ROM monitor mode, do the following:

Configuring

 

Command or Action

Purpose

Step 1

 

 

Router> reload

Restarts the Cisco VG224.

Step 2

 

 

Press the Break key during the first 60 seconds while

Forces the router to stop booting

 

the system is starting up.

and enter the ROM monitor mode.

 

 

 

Verifying

To verify that you are in ROM monitor mode, check that the prompt displayed on your screen is the ROM monitor mode prompt:

rommon # >

The # is the line number and increases incrementally at each prompt.

Tip From the Cisco IOS software, you can configure the router to automatically enter the ROM monitor mode the next time the router boots by setting virtual configuration register bits 3, 2, 1, and 0 to zero. From the console, enter the following configuration command:

configuration-register 0x0

The new configuration register value, 0x0, is effective after the router is rebooted with the reload command. The router remains in ROM monitor and does not boot the operating system.

As long as the configuration register value remains 0x0, you must manually boot the operating system from the console. Refer to the boot command in the section “Command Descriptions” later in this appendix.

ROM Monitor Commands

Enter ? or help at the ROM monitor mode prompt to display a list of available commands. For example:

 

 

 

rommon 1 >

?

 

 

 

 

 

alias

set and

display aliases command

 

 

 

boot

boot up

an external process

 

 

 

break

set/show/clear the breakpoint

 

 

 

confreg

configuration register utility

 

 

 

cont

continue executing a downloaded image

 

 

 

context

display

the context of a loaded image

 

 

 

cookie

display

contents of cookie PROM in hex

 

 

 

dev

list the device table

 

 

 

dir

list files in the file system

 

 

 

dis

display

instruction stream

 

 

 

dnld

serial download a program module

 

 

 

frame

print out a selected stack frame

 

 

 

fpga-pref

select an FPGA

 

 

 

help

monitor

builtin command help

 

 

 

history

monitor

command history

 

 

 

meminfo

main memory information

 

 

 

repeat

repeat a monitor command

 

 

 

Cisco VG224 Voice Gateway Software Configuration Guide

 

 

 

 

 

 

 

 

 

 

 

C-2

 

 

 

OL-5005-01

 

 

 

 

 

 

Page 55 Page 57
Image 56
Page 55 Page 57
Contents Cisco VG224 Voice Gateway Software Configuration Guide Corporate HeadquartersCisco VG224 Voice Gateway Software Configuration Guide N T E N T S Where to Go Next Command Descriptions C-3 Debugging Commands C-5 OL-5005-01 Objectives AudienceChapter Title Description Document OrganizationRelated and Referenced Documents Cisco Product Document Title Obtaining Documentation Cisco.comDocumentation CD-ROM Ordering DocumentationCisco TAC Website Opening a TAC Case Documentation FeedbackObtaining Technical Assistance Obtaining Additional Information TAC Case Priority DefinitionsXiii Xiv Understanding Interface Numbering Cisco IOS Software Basics Identifying the Cisco VG224Port Numbering Conventions Cisco VG224 is used as an example. See -2 onGetting Help Command ModesUnderstanding Cisco IOS Software Basics Undoing a Command or Feature Where to Go Next Saving Configuration ChangesRouter# copy running-config startup-config Upgrading to a New Cisco IOS ReleaseCisco VG224 Voice Gateway Software Configuration Guide Using the setup Command Before Starting Your Cisco VG224Using the setup Command Configuring Global ParametersUsing the setup Command Configuring Global Parameters Configuring global parameters Enter host name Router VG224 Enter a host name for the Cisco VG224Configuring Controller and Interface Parameters Configuring Fast Ethernet and Serial Interface ParametersOptional Configure Chap Configure the Isdn switch type for PRICompleting the Configuration Fast Ethernet Interface ConfigurationAt this point you can proceed to the following OL-5005-01 Configuring with the Command-Line Interface Configuring the Host Name and Password Command PurposeVerifying the Host Name and Password Tip If you are having trouble, ensure the followingConfiguring Fast Ethernet Interfaces Saving Configuration Changes OL-5005-01 Configuring the Voice Interface PrerequisitesRouter# show running-config Router# show startup-configCisco IOS Voice Configuration Library OL-5005-01 Cisco VG224 Configuration Example Appendix a Cisco VG224 Configuration Example Dial-peer voice 6 pots service stcapp Port 2/5 Determining the File System on a Compact Flash Memory Card Formatting ProceduresFormatting the Compact Flash Memory Cards Router# show flash all Geometry and format information is displayed in this formaRouter# show slot0 all Router# erase slot0 Geometry and format information is displayed in this format11# show flash all File and Directory Operations Operations for Use with Class B Flash File SystemFormatting Compact Flash Memory as a Class C File System Copying FilesDisplaying the Contents of a Compact Flash Memory Card Delete Files from Compact Flash Memory Router# show slot0Router# dir slot0 Router# delete slot0cvg224-i-mz.tmpDisplaying File Content Operations for Use with Class C Flash File SystemFile Operations for Class C Flash File System Router# more slot0cvg224-i-mzDisplaying Geometry and Format Information Router# show slot0 filesysRouter# rename flashcvg224-i-mz.tmp flashcvg224-i-mz Rename a FileRouter# delete flashcvg224-i-mz.tmp Router# mkdir flash/config Router# mkdir flash/config/test-configDirectory Operations for Class C Flash File System Create a New DirectoryRouter# cd flash/config Router# dir flash Router# rmdir flash/config/test-configRemove a Directory Enter a Directory and Determine Which Directory You AreRouter# cd config PwdDir Router# cd slot0Using the ROM Monitor Entering the ROM Monitor ModeROM Monitor Commands ConfiguringCommand or Action Purpose VerifyingROM Monitor Syntax Conventions Command DescriptionsCommand abc Showfpga-Show FPGA-related information Rommon 8 dir flash /dir slot0Debugging Commands Configuration Register CommandsUsing the show rom-monitor command ConfregRouter# show rom-monitor Using the upgrade rom-monitor CommandThen reload the router Recovering Boot and System Images Using the xmodem CommandUsing the tftpdnld Command Rommon 1 tftpdnldOL-5005-01 Command C-8 Commands Context C-5 Debugging commands C-5dir C-4Timeout Host nameMeminfo Upgrade User Exec command mode
Related manuals
Manual 24 pages 43.46 Kb

VG224 specifications

The Cisco Systems VG224 is a versatile VoIP (Voice over Internet Protocol) gateway designed to facilitate the integration of traditional phone systems with modern IP-based communications. This device plays a crucial role in providing connectivity between analog phones and digital networks, allowing organizations to transition smoothly from legacy telephony systems to IP telephony.

One of the standout features of the VG224 is its ability to support up to 24 analog phone lines. This scalability makes it an ideal choice for small to medium-sized businesses that require a dependable solution to handle their telephony needs without overspending on infrastructure. The VG224 acts as a bridge, converting analog voice signals into digital IP packets, thus enabling seamless communication over the Internet or intranets.

The VG224 is equipped with a range of technologies that enhance its functionality and reliability. Voice activity detection (VAD), comfort noise generation (CNG), and echo cancellation are just some examples of the advanced audio processing techniques integrated into the VG224. These technologies improve call quality by ensuring clear and uninterrupted conversations, even under varying network conditions.

In terms of characteristics, the VG224 features a user-friendly interface with a web-based management console, making it easy for network administrators to configure and manage the device remotely. This streamlined approach to management is crucial for businesses that require quick adjustments to their communication infrastructure without the need for extensive technical knowledge.

The VG224 supports multiple signaling protocols, including H.323, MGCP (Media Gateway Control Protocol), and SIP (Session Initiation Protocol). This flexibility allows it to integrate seamlessly with various IP telephony systems and offers businesses the option to utilize their preferred communication standards. Additionally, the device supports power over Ethernet (PoE), providing the convenience of powering devices through the same cable used for data connectivity, thus reducing the need for additional power sources.

In conclusion, the Cisco Systems VG224 is a robust VoIP gateway that combines advanced technology with user-friendly features. Its capacity to support up to 24 analog lines, along with its compatibility with various signaling protocols, makes it an excellent choice for businesses looking to modernize their telecommunication systems while maintaining the reliability of traditional analog connections. With its ease of management and high-quality voice processing capabilities, the VG224 stands out as a key asset for any organization aiming to optimize its communication infrastructure.
Top Page Image Contents