VOCAL Technologies has implemented a variety of System Designs providing voice, video, data, and fax solutions, suitable for a variety of applications such as call centers, audio and video conferencing systems, and fax servers. Our designs support world-wide homologation and may be customized for specific operating environments. VOCAL’s System Designs are robust yet flexible, and easily customized to satisfy additional system requirements.
VOCAL has implemented both SIP and H.323 Voice Over IP (VoIP) systems including voice, real-time fax, modem data, and now H.264 video. Our VoIP systems support all the popular voice coders, including wideband voice coders, for almost every common RISC or DSP processor. Wideband audio delivers better user experience than obtainable through the legacy telephone network. Many new services and systems will require a mix and match approach to include both narrow and wideband HD audio. When combined with HD video, video conferencing provides true telepresence.
Radio Over IP Systems
VOCAL has developed Radio over IP (RoIP) systems to meet the special needs of customers with demanding applications. Many of these designs benefit from the use of VOCAL’s On-One™ DSP technology which provides a significant reduction in product cost, complexity, space and power consumption. By running optimized DSP functions and application protocols together under VOCAL’s own lightweight network operating system (LANsEND), high computational density/power efficient, single processor RoIP designs can be implemented. Furthermore for many application and customers, security can be incorporated directly into the system bypassing the traditional need for seperate processor domains.
Our ITAR free code base can be used for a variety of commercial, industrial and security applications. VOCAL may also provide services to adapt its standard code for defense applications encumbered by ITAR regulations. Such code modifications will effectively be owned by our customer to satisfy ITAR requirements.
Please contact us with your special requirements.
Hardware Reference Designs and FPGA/PLD/ASIC Cores
VOCAL offers a variety of Reference Design Kits to provide voice, video, data, and fax solutions suitable for world-wide homologation and customized for specific operating environments. Our Reference Designs are robust yet flexible and easily customized to satisfy additional system requirements. VOCAL also offers many solutions in the form of FPGA/PLD/ASIC Cores.
Reference Designs are available for a variety of products, including:
FPGA/PLD/ASIC Cores are available for a variety of applications, including:
- VOCAL-AES cores – VHDL implementations of the Advanced Encryption Standard (AES)
- VOCAL-CCM cores – VHDL implementations of the Counter Mode with CBC-MAC
Custom Cryptographic System Design
VOCAL has significant experience in the development and implementation of such cryptographic systems. This ranges from the implementation of Secure RTP (SRTP) and Secure SIP to protection of factory production and to field hardened ad-hoc networked personal radios. Design considerations include random number generator quality, key generation and protection, replay avoidance and key and/or PN space re-use avoidance.
Lawful Interception Systems
VOCAL’s Lawful Interception Fax monitoring module includes a Fax decoder for both standard faxes as well as machines that make use of manufacturer specific T.30 ‘Non-Standard Facilities’ (NSF) features. Accurate image recovery is ensured through blind data retrieval and consistency checks, avoiding possible compatibility issues with non-standard fax machines.
Fax Over IP/Fax Logging Systems
In today’s corporate business environment, compliance with Sarbanes-Oxley, HIPAA and other regulations, demand significant changes or additions to common procedures. Records retention is one important aspect for which Fax logging is often desired. VOCAL provides a real-time Fax over IP (T.38) solution integrated with a logging facility to record all incoming and outgoing transmissions.
Remote Radio Monitoring Systems
The VOCAL Remote Radio Monitoring system supports dial-up access of field deployed radio receivers. Serial or USB communications with the actual radio is carried in a Telnet-style connection from a central monitoring location to the field deployed radio. Audio is digitized, compressed and packetized using Internet stardards for VoIP. In this case SIP and RTP are used to initiate audio connections and for its delivery. Special radio tones (SELTONE, CTSS, etc) can be detected remotely and delivered as out-of-band indications within the RTP stream.