Cisco Systems VG224 manual Prerequisites, Configuring the Voice Interface

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C H A P T E R 4

Configuring Voice over IP

This chapter explains how to configure voice interfaces and ports, which convert telephone voice signals for transmission over an IP network.

This chapter presents the following major topics:

•Prerequisites, page 4-1

•Configuring the Voice Interface, page 4-1

•Where to Go Next, page 4-3

Voice over IP (VoIP) enables your Cisco VG224 to carry live voice traffic (for example, telephone calls and faxes) over an IP network. VoIP offers the following benefits:

•Unified voice and data trunking

•Plain old telephone service (POTS)-Internet telephony gateways

Prerequisites

Before you can configure your Cisco VG224 to use VoIP, you must first establish a working IP network.

Configuring the Voice Interface

Whenever you install a new interface, or if you want to change the configuration of an existing interface, you must configure the interface. If you replace a module that was already configured, the Cisco VG224 recognizes it and brings up the interface in the existing configuration.

Before you configure an interface, have the following information available:

•Protocols you plan to route on the new interface

•IP addresses, subnet masks, network numbers, zones, or other information related to the routing protocol

Timesaver Obtain this information from your system administrator or network plan before you begin configuring your Cisco VG224.

To configure a voice interface, you must use configuration mode (manual configuration). In this mode, you can enter Cisco IOS commands through the command line interface (CLI).

Cisco VG224 Voice Gateway Software Configuration Guide

 

OL-5005-01

4-1

 

 

 

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Contents Corporate Headquarters Cisco VG224 Voice Gateway Software Configuration GuideCisco 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 Audience ObjectivesChapter Title Description Document OrganizationRelated and Referenced Documents Cisco Product Document Title Ordering Documentation Obtaining DocumentationCisco.com Documentation CD-ROMCisco TAC Website Opening a TAC Case Documentation FeedbackObtaining Technical Assistance TAC Case Priority Definitions Obtaining Additional InformationXiii Xiv Identifying the Cisco VG224 Understanding Interface Numbering Cisco IOS Software BasicsCisco VG224 is used as an example. See -2 on Port Numbering ConventionsGetting Help Command ModesUnderstanding Cisco IOS Software Basics Undoing a Command or Feature Upgrading to a New Cisco IOS Release Where to Go NextSaving Configuration Changes Router# copy running-config startup-configCisco VG224 Voice Gateway Software Configuration Guide Before Starting Your Cisco VG224 Using the setup CommandConfiguring Global Parameters Using the setup CommandUsing the setup Command Configuring Global Parameters Enter a host name for the Cisco VG224 Configuring global parameters Enter host name Router VG224Configure the Isdn switch type for PRI Configuring Controller and Interface ParametersConfiguring Fast Ethernet and Serial Interface Parameters Optional Configure ChapFast Ethernet Interface Configuration Completing the ConfigurationAt this point you can proceed to the following OL-5005-01 Configuring with the Command-Line Interface Command Purpose Configuring the Host Name and PasswordTip If you are having trouble, ensure the following Verifying the Host Name and PasswordConfiguring Fast Ethernet Interfaces Saving Configuration Changes OL-5005-01 Prerequisites Configuring the Voice InterfaceRouter# show startup-config Router# show running-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 Copying Files File and Directory OperationsOperations for Use with Class B Flash File System Formatting Compact Flash Memory as a Class C File SystemDisplaying the Contents of a Compact Flash Memory Card Router# delete slot0cvg224-i-mz.tmp Delete Files from Compact Flash MemoryRouter# show slot0 Router# dir slot0Router# more slot0cvg224-i-mz Displaying File ContentOperations for Use with Class C Flash File System File Operations for Class C Flash File SystemRouter# show slot0 filesys Displaying Geometry and Format InformationRouter# rename flashcvg224-i-mz.tmp flashcvg224-i-mz Rename a FileRouter# delete flashcvg224-i-mz.tmp Create a New Directory Router# mkdir flash/configRouter# mkdir flash/config/test-config Directory Operations for Class C Flash File SystemEnter a Directory and Determine Which Directory You Are Router# cd flash/config Router# dir flashRouter# rmdir flash/config/test-config Remove a DirectoryRouter# cd slot0 Router# cd configPwd DirEntering the ROM Monitor Mode Using the ROM MonitorVerifying ROM Monitor CommandsConfiguring Command or Action PurposeROM Monitor Syntax Conventions Command DescriptionsCommand abc Rommon 8 dir flash /dir slot0 Showfpga-Show FPGA-related informationConfiguration Register Commands Debugging CommandsConfreg Using the show rom-monitor commandRouter# show rom-monitor Using the upgrade rom-monitor CommandThen reload the router Using the xmodem Command Recovering Boot and System ImagesRommon 1 tftpdnld Using the tftpdnld CommandOL-5005-01 Host name Command C-8 CommandsContext C-5 Debugging commands C-5dir C-4 TimeoutUser Exec command mode Meminfo Upgrade
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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.
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