Cisco Systems VG204 Using the Configuration Register, About Changing the Configuration Register

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Appendix A Using the ROM Monitor

Using the Configuration Register

Using the Configuration Register

About Changing the Configuration Register, page A-5

Changing the Configuration Register Manually, page A-5

Changing the Configuration Register Using Prompts, page A-5

About Changing the Configuration Register

The virtual configuration register is in nonvolatile RAM (NVRAM) and has the same functionality as other Cisco voice gateways. You can view or modify the virtual configuration register from either the ROM monitor or the operating system software. Within the ROM monitor, you can change the configuration register by entering the register value in hexadecimal format, or by allowing the ROM monitor to prompt you for the setting of each bit.

Changing the Configuration Register Manually

To change the virtual configuration register from the ROM monitor manually, enter the confreg command followed by the new value of the register in hexadecimal format, as shown in the following example:

rommon 1 > confreg 0x2101

You must reset or power cycle for new config to take effect rommon 2 >

The value is always interpreted as hexadecimal. The new virtual configuration register value is written into NVRAM but does not take effect until you reset or reboot the voice gateway.

Changing the Configuration Register Using Prompts

Entering the confreg command without an argument displays the contents of the virtual configuration register and a prompt to alter the contents by describing the meaning of each bit.

In either case, the new virtual configuration register value is written into NVRAM but does not take effect until you reset or reboot the voice gateway.

The following display shows an example of entering the confreg command:

rommon 7> confreg

Configuration Summary enabled are:

console baud: 9600

boot: the ROM Monitor

do you

wish to change the configuration? y/n

[n]: y

enable

“diagnostic

mode”? y/n

[n]:

y

 

enable

“use net in

IP bcast address”? y/n

[n]:

enable

“load rom after netboot fails”? y/n

[n]:

enable

“use all zero broadcast”? y/n

[n]:

 

enable

“break/abort has effect”? y/n

[n]:

 

enable

“ignore system config info”?

y/n [n]:

change

console baud

rate? y/n

[n]:

y

 

 

enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400

[0]: 0

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

OL-16191-01

 

 

A-5

 

 

 

 

 

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Contents Text Part Number OL-16191-01 Americas HeadquartersCopyright 2008-2013 Cisco Systems, Inc. All rights reserved N T E N T S Changing the Configuration Register Manually A-5 Audience Document ObjectivesBoldface font AccessibilityDocumentation Conventions Convention DescriptionCisco VG200 Series Gateways Related DocumentationViii Port Numbering Conventions About the Voice GatewaysBack Panel Feature Locations on the Cisco VG202 Chassis Release Understanding Cisco IOS Software BasicsAbout Cisco IOS Software Chapter before you proceed to the next chapterExit , or logout Command ModesCommand Mode Access Method VG Prompt Displayed Exit Method Getting HelpInterface fast ethernet Undoing a Command or FeatureSaving Configuration Changes Configure terminalUpgrading to a New Cisco IOS Release Where to Go NextTypical Voice Gateway Deployment Scenario Page OL-16191-01 Procedure About Configuring Your Voice GatewayPreparing to Configure Your Cisco Voice Gateway Determine the addressing plan for each network protocol Using the setup CommandEnter a hostname for the voice gateway Enter hostname VG VG204 Completing the Configuration OL-16191-01 Restriction Configuring the Hostname and PasswordConfiguration guide and command reference publications Example Verifying the Hostname and PasswordCommand or Action Purpose ExitBefore You Begin Configuring Fast Ethernet InterfacesEnable Configure terminal Ip routing Exit Ctrl-z Are not lost during resets, power cycles, or power Saving Configuration ChangesEnable Copy running-config startup-config Ctrl-z Saves the configuration changes to Nvram so that theyOL-16191-01 Prerequisites Configuring the Voice InterfacePrompt changes to the privileged Exec enable prompt VG# Auto-Configuration With a Dhcp Server Restriction for Configuring Auto-ConfigurationIp address dhcp Enable Configure terminalCcm-manager config server tftpipaddress Ccm-manager sccp Auto-Configuration Without a Dhcp ServerVoice service voip Fax protocol t38 nseforce Transcoding and conferencing Enables the Sccp and its related applicationsDownloads Cucm XML configuration files and enables Configuration portSccp Sccp ccm group group-number Enables Cucm auto-configuration of the Cisco IOSDial-peer voice tags pots Service stcapp Command or Action Purpose 000 001 002 003 Configuring the MAC Address ConventionLast Three Digits of the MAC Port Number AddressGlobal configuration mode when the prompt changes to Configuring CallsEnters privileged Exec mode Enters global configuration mode. You have enteredCaller ID Call WaitingThree-Party Conferencing Allows the sending or receiving of caller ID information Caller-id enable typeCaller-id enable type Exit OL-16191-01 Enable Configure terminal Config-register value Exit Reload Entering the ROM Monitor ModeAbout the ROM Monitor Commands Command Descriptions Listing the ROM Monitor CommandsMeminfo Recovering Boot and System ImagesCommand Description Reset orChanging the Configuration Register Using Prompts Using the Configuration RegisterAbout Changing the Configuration Register Changing the Configuration Register ManuallyAbout the Console Download Function Using the Console Download FunctionCommand Description Context-Displays processor context for example Using Debug CommandsError Reporting Rommon 9 meminfo Main memory size 128 MB Exiting the ROM Monitor ModeFigures Meminfo A-8reset A-4Reset command ROM monitor Commands Debug commands
Related manuals
Manual 48 pages 51.2 Kb

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.