Chapter 3 Installing the Cisco VG224 Voice Gateway

Connecting Backup Power

Connecting to a Remote ASCII Terminal

To link a Cisco VG224 voice gateway to a remote ASCII terminal, such as a VT100, use the following procedure:

Step 1 Connect the remote ASCII terminal and modem.

Step 2 Set the terminal requirements:

9600 baud

8 data bits

1 stop bit no parity

no flow control.

Step 3 Key in the telephone number of the Cisco VG224 voice gateway external modem, or, if you are using a Hayes-compatible modem, enter ATDT and the number to be dialed.

Connecting Backup Power

A Cisco VG224 voice gateway can be installed with optional backup power. Backup power to a DC-powered chassis is provided by a 12-volt battery backup system; see the “Connecting a Backup Battery to a DC-Powered Cisco VG224” section for connection instructions. Backup power to an AC-powered chassis is provided by an uninterruptible power supply (UPS); see the “Connecting a UPS to an AC-Powered Cisco VG224” section for connection instructions.

Caution The Cisco VG224 chassis provides inputs for both AC and DC power. Design your installation to use only one type of power. Do not use AC and DC power at the same time. If you do, the unit stops operating, and you must reboot it with only a single power source.

The maximum power requirement for the Cisco VG224 voice gateway is 70 W.

Connecting a Backup Battery to a DC-Powered Cisco VG224

Connect a 12-volt backup battery to the DC input connector on your Cisco VG224 voice gateway. Before you install a backup battery, be sure to read the installation instructions for the backup battery equipment.

Figure 3-15shows a setup using an external backup battery.

Note Figure 3-15shows one possible setup; please review your backup battery documents before setting up your system.

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Cisco Systems VG224 installation instructions Connecting Backup Power, Connecting to a Remote Ascii Terminal

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.