VitaHD Videoconferencing Terminal

VitaHD series videoconferencing terminals are designed for use in conditions where it is necessary to meet the highest requirements of information security. The VitaHD Special version of the terminal runs on a Russian special-purpose operating system, which makes it optimal for use in higher government authorities

KV modem NatureDSP IT2400

NatureDSP IT2400 is a software implementation of a HF modem for transmitting packet and streaming data, including speech over a HF radio channel for thousands of kilometers, using inexpensive commercial transceivers with a narrowed band. Military NATO modems (Rokwell Collins, Harris, etc.) operating according to 110A, 110B, STANAG 4539 standards require a wider bandwidth for their operation. This means, in fact, that they are not able to work through standard commercial radio stations Codan, iCom, Yaesu, Kenwood. The NatureDSP IT2400 modem supports transfer rates of 2400/1200/600 bits/sec in a reduced band of 600...2400 Hz. A specially designed signal structure allows it to be easily connected to vocoders (such as MELP) to organize digital speech transmission over the HF channel. The modem is specially designed for voice transmission - it has short interleaves and a very noise-resistant signal-code design.
Our modem has been successfully used in Russian-made speech maskers since 2007 and successfully transmits data in different countries of the world.

Features:
• Supports 2400/1200/600 bit/sec transfer rates
• Provides frame synchronization for all standard vocoders (MELP, etc.)
• Optimizes end-to-end signal delay in the channel for better speech perception
• Allows you to get soft output solutions for improved integration with vocoders.
• A large set of commands for configuring the modem (>50) and a built-in log generator. Allows you to get an estimate of the main parameters of the communication channel in real time
• Adaptive KV channel correction scheme operating in a wide range of multipath, fading and noise fluctuations
• Narrowed signal band for docking with commercial transceivers.
• Not sensitive to ALC/AGC systems in transceivers and path nonlinearity
• Built-in test signal generator and BER meter.
• Fully portable ANSI C code
• Fully compatible with the channel simulator as recommended by ITU-R.F1487.
A real-time channel simulator is available as an option for testing purposes. • Demo version is available for EVM6424 and PC

Areas of application:
• HF communication at frequencies of 3..30 MHz
• Digital communication
• Digital transmission of speech over the HF channel
• SDR

APCO P25/DMR stack for VHF radio stations

a software platform for building next-generation digital trunking VHF communication networks. Developed in strict accordance with the recommendations of APCO P25 FDMA Common Air Interface (TIA-102.BAAA-A) and DMR ETSI TS 102 361, the platform is an ideal solution for manufacturers of analog and digital VHF equipment. In fact, it is a complete platform for building digital trunking communication networks and data transmission networks over the radio channel. The high scalability of the solution allows it to be used in portable and mobile radios, as well as base stations and repeaters. It can be used in conventional and trunked networks.

The CrystalVu SDK Developer Library

The IntegrIT CrystalVu SDK is a cross-platform software engine that contains everything you need to organize two-way and multi-way video communication over an IP network between Windows, Mac OS, Linux computers, iOS smartphones and tablets, Android and SIP phones. The library makes it easy to implement the functionality of the video terminal in your device or application.
The CrystalVu SDK provides a unified API for integrating audio/video I/O drivers, which greatly facilitates the integration of the engine into a client application, and thanks to native support for SIP signaling, the CrystalVu SDK provides a high level of compatibility with standard VoIP hardware and software.

Multi-microphone acoustic echo canceller CrystalVu UWB

The acoustic echo canceller is designed to organize full-duplex loudspeaker communication in IP networks and VoIP equipment, for example in conference terminals, smartphones, communicators, video telephone and dispatch communications, speech synthesis and recognition systems, speech transmission over IP networks (VoIP) and the Internet. The technology includes an intelligent echo and noise reduction system that highlights the subscriber's voice against the background of noise and acoustic interference and ensures natural sound quality. This allows users to communicate comfortably in a wide variety of environments, even at extremely high noise levels.
Echo cancellation technology is specially adapted for use in various mobile devices such as laptops and communicators, where its own sound quality is limited by the mechanical design of the housings, the small size of the speakers and the strong acoustic connection between the microphone and the speakers.
The microphone array allows you to ensure confident identification of the speaking subscriber in a difficult interference environment