TVP-221H User’s1Guide

Chapter 1

Overview

This chapter gives an overview of the 4 ports desktop version VoIP Gateway (TVP-221H) and a detailed description of its front panel and rear panel.

1.1Features

The TVP-221H is a cost-effective and highly reliable analog Voice over IP (VoIP) Gateway that offers toll quality voice and real-time fax data over IP networks. With its embedded architecture, the gateway is ideal for VoIP applications associated with Remote Office and Branch Office (ROBO) environments. With its built-in user-friendly interface, the gateway may be installed easily and conveniently to yield immediate cost savings. One VoIP Gateway supports up to four voice or Fax communications simultaneously.

Implemented with an efficient Real-Time Operating System (RTOS) and flash memory, the TVP-221H provides upgradeable capabilities, so it may be programmed with updated firmware locally or via the network at any time. It comes equipped with remote management capabilities, configurable signaling to work with PBX, KTS, and/or telephone. The TVP-221H utilizes advanced VoIP related technology. It includes various voice codecs and fax algorithms, echo cancellation, Voice Activity Detection (VAD) , Comfort Noise Generation (CNG) , and lost packet recovery algorithms.

1.2Networking Protocols

The TVP-221H supports several industry-standard networking protocols required for voice communication. The following table describes these protocols.

Networking Protocol

Description

Internet Protocol (IP)

IP is a messaging protocol that addresses and sends packets

 

across the network. To enable IP protocol, the TVP-221H

 

must have a Real IP address, subnet, and gateway assigned

 

to it.

Voice over IP Protocol

VoIP enables the TVP-221H to transfer voice

(VoIP)

communications over an IP network. The TVP-221H

 

employs ITU-T H.323 protocol for setting up calls with

 

one another.

Trivial File Transfer

TFTP allows you to transfer files over the network. The

Protocol (TFTP)

TVP-221H implements a TFTP client allowing you to

 

download new revision firmware from a TFTP server. The

 

TFTP client requires a TFTP server in your network.

Real-Time Transport

RTP is a standard for transporting real-time data over IP

(RTP)

network. The TVP-221H uses RTP protocol to send

 

digitized and compressed voice packets.

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TRENDnet TVP- 221H, VoIP Gateway manual Features, Networking Protocols

VoIP Gateway, TVP- 221H specifications

The TRENDnet TVP-221H is a robust VoIP Gateway designed for seamless communication in both residential and small business environments. This device is engineered to facilitate the transmission of voice calls over the internet, leveraging Voice over Internet Protocol (VoIP) technology to enhance communication efficiency and reduce costs associated with traditional telephony.

One of the standout features of the TVP-221H is its dual FXS ports, which allow users to connect standard analog phones or fax machines directly to the gateway. This ensures compatibility with existing equipment, providing a smooth transition from conventional phone services to VoIP solutions. The device supports a wide range of codecs including G.711, G.723, G.726, and G.729, ensuring high-quality, clear voice transmission suitable for various bandwidth requirements.

The TRENDnet TVP-221H also boasts an intuitive web-based interface, making it easy for users to configure and manage their VoIP settings. This feature provides accessibility for remote management, enabling quick adjustments to settings and ensuring that the system is always optimized for performance. In addition, the gateway supports advanced call features such as call waiting, caller ID, and call forwarding, enhancing overall user experience and functionality.

In terms of security, the device incorporates support for SIP TLS and SRTP, providing encryption for signaling and media streams respectively. This ensures that voice communications are kept secure from potential eavesdropping or tampering, critical in today's digital landscape where privacy is a priority.

The TRENDnet TVP-221H is also designed with quality of service (QoS) features to prioritize voice traffic, ensuring smooth call performance even in environments with heavy internet usage. It also supports automatic provisioning and firmware upgrades, simplifying updates and maintenance workflows.

With its compact design, the device can be easily mounted on a wall or placed on a desk, offering flexibility in installation. Its low power consumption and efficient operation also make it an eco-friendly choice for businesses looking to minimize their energy footprint while enhancing communication capabilities.

In summary, the TRENDnet TVP-221H VoIP Gateway is an essential tool for modern communication, providing reliable performance, advanced features, and a user-friendly experience. Its combination of security, call management capabilities, and ease of use makes it a top choice for anyone looking to improve their telephony solutions.