Appendix A Using the ROM Monitor

About the ROM Monitor Commands

Listing the ROM Monitor Commands

Enter ? or help at the ROM monitor prompt to display a list of available commands and options, as follows:

rommon 1 > ?

 

 

alias

set and

display aliases command

boot

boot up

an external process

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 directories-dir <directory>

dis

display

instruction stream

frame

print out a selected stack frame

help

monitor

builtin command help

history

monitor

command history

iomemset

Set IO memory percent

meminfo

main memory information

repeat

repeat a monitor command

reset

system reset

rommon-pref

Select ROMMON

set

display

the monitor variables

showmon

Display

currently selected ROM monitor

stack

produce

a stack trace

sync

write monitor environment to NVRAM

sysret

print out info from last system return

tftpdnld

tftp image download

unalias

unset an alias

unset

unset a

monitor variable

xmodem

x/ymodem image download

rommon 1 >

 

 

Commands are case sensitive. You can halt any command by pressing the Break key on a terminal. If you are using a PC, most terminal emulation programs halt a command when you press the Ctrl and the Break keys at the same time. If you are using another type of terminal emulator or terminal emulation software, see the documentation for that product for information on how to send a Break command.

Command Descriptions

Table A-1describes the most commonly used ROM monitor commands.

Table A-1

Commonly Used ROM Monitor Commands

 

 

 

Command

 

Description

 

 

 

help or ?

 

Displays a summary of all available ROM monitor commands.

 

 

 

Cisco VG202, Cisco VG202XM, Cisco VG204, and Cisco VG204XM Voice Gateways Software Configuration Guide

 

OL-16191-01

A-3

 

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Cisco Systems VG204XM, VG202XM manual Listing the ROM Monitor Commands, Command Descriptions

VG202, VG204XM, VG204, VG202XM specifications

Cisco Systems has long been a leader in the realm of networking technology, providing innovative solutions for businesses of all sizes. Among its products, the Cisco VG202XM, VG204, VG204XM, and VG202 series stand out as vital components in voice gateway solutions for IP telephony applications.

The Cisco VG202XM and VG204 series are designed to facilitate the convergence of voice and data as businesses transition to VoIP (Voice over Internet Protocol). These voice gateways offer seamless integration with legacy telephony systems while enabling the deployment of advanced IP-based telephony features. They are particularly useful for organizations looking to preserve their existing investments in traditional telephony infrastructure while embracing modern communication technologies.

One of the main features of the VG202XM and VG204 series is their support for two-line interfaces, catering to varying deployment needs. The VG202 provides two FXS (Foreign Exchange Station) ports, which allow businesses to connect analog phones and fax machines directly. The VG204 enhances this capability by offering four FXS ports, accommodating larger user bases and providing more connections for local telephony equipment.

These gateways support an array of voice codecs and can handle up to 16 concurrent calls, ensuring high-quality voice communication in busy environments. Their integration with Cisco's Unified Communications Manager allows users to access a host of advanced telephony features such as call forwarding, voicemail, and conferencing.

On the technology front, the VG202XM and VG204 series support both SIP (Session Initiation Protocol) and H.323 protocols, making them versatile for varied network environments. They also offer advanced QoS (Quality of Service) capabilities, ensuring that voice traffic is prioritized over other types of data, which is essential in maintaining call clarity and reliability.

Additionally, the VG204XM variant adds built-in safety features, such as power over Ethernet (PoE), which eliminates the need for separate power supplies for connected devices. This not only streamlines deployment but also enhances the reliability of the voice system.

In terms of management, these devices are equipped with Cisco's user-friendly interface, which simplifies configuration and monitoring. They can be managed through various tools offered by Cisco, making it easier for IT departments to maintain and optimize their voice services.

Overall, the Cisco VG202XM, VG204, VG204XM, and VG202 series deliver robust, scalable, and reliable solutions for businesses aiming to leverage the benefits of voice gateways in their enterprise networks. These devices not only provide essential voice capabilities but also pave the way for future growth and integration in an increasingly digital world.