Appendix A Using the ROM Monitor

About the ROM Monitor Commands

DETAILED STEPS

 

Command or Action

Purpose

Step 1

 

 

enable

Enters privileged EXEC mode.

 

Example:

 

 

VG# enable

 

Step 2

 

 

configure terminal

Enters global configuration mode.

 

Example:

 

 

VG# configure terminal

 

Step 3

 

 

config-register value

Resets the configuration register settings.

 

Example:

 

 

VG(config)# config-register 0x2102

 

Step 4

 

 

exit

Exits to global configuration mode.

 

Example:

 

 

VG(config)# exit

 

Step 5

 

 

reload

Reboots the voice gateway with the new configuration

 

 

register value. The voice gateway remains in ROM

 

Example:

monitor and does not boot the Cisco IOS software.

 

 

 

VG# reload

As long as the configuration value is 0x0, you must

 

 

manually boot the operating system from the console.

 

 

See the boot command in the “Command Descriptions

 

 

section in this appendix.

 

 

After the voice gateway reboots, it is in ROM monitor

 

 

mode. The number in the prompt increments with each

 

 

new line.

 

 

 

Timesaver Break (system interrupt) is always enabled for 60 seconds after the voice gateway reboots, regardless of whether it is set to on or off in the configuration register. During this 60-second window, you can break to the ROM monitor prompt by pressing the Break key.

About the ROM Monitor Commands

Listing the ROM Monitor Commands, page A-3

Command Descriptions, page A-3

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

 

A-2

OL-16191-01

 

 

 

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Cisco Systems VG202XM, VG204XM manual About the ROM Monitor Commands

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.