APEX VOICE COMMUNICATIONS ANNOUNCES SIP PROXY AND PRESENCE SERVER FOR THE OMNIVOX3D® APPLICATION SERVER

- SIP Proxy Server Includes SIMPLE Presence Engine for Real-Time Services -

WOODLAND HILLS, CA, December 5, 2007 - APEX Voice Communications, a worldwide supplier of carrier-grade, multi-service SIP Application Servers for voice and video enhanced services, today announced the availability of a SIP Proxy and Presence Server (PPS) for its OmniVox3D Application Server. By using SIMPLE technology and providing a core set of routing, presence, media proxy and resource management functions, the OmniVox3D SIP PPS can be applied to a wide range of real-time VoIP-based services.

Consisting of a SIP proxy server, registrar, XCAP functions and the IETF-compliant SIMPLE (SIP Instant Messaging and Presence Leverage Extension) presence engine, the OmniVox3D SIP Proxy and Presence Server can be deployed as a critical server component of any presence- aware SIP based communication and collaboration service, including instant messaging/voice/video/conferencing, IP-PBX, Web collaboration, and video conferencing.

While the OmniVox3D SIP Proxy Server provides accurate routing of general SIP messages and presence information, the Presence Server engine collects and updates user presence information (online/offline, busy and away), as well as user capability (Audio, Video, IM, Collaboration) from various devices (PC, mobile phone, PDA, etc.). In addition to core SIP and SIMPLE support, the OmniVox3D SIP PPS implements XCAP functions for server side resource management such as buddy lists.

The OmniVox3D SIP Proxy Server also has media proxy capabilities. SIP network operators can use the Proxy Server on the edge of the network in order to solve NAT traversal problems as well as to assure that both signaling and media streams between two remote peers are properly relayed through the operator's network.

"In today's highly mobile environment, presence-based services are critical to the continued success of our service provider customers," said Elhum Vahdat, executive vice president of APEX Voice Communications. "Which is why we have integrated a presence engine with our SIP Proxy Server."

Some of the features of the OmniVox3D SIP Presence Server include, support of SUBSCRIBE and NOTIFY methods, centralized server mode (i.e. central and permanent repository of presence information), Web administration tools, white and black access lists management, UDP or TCP transport modes, and security via DIGEST authentication, TLS authentication and encryption.

OmniVox3D SIP PPS' flexible design makes it deployable in a standalone, distributed or clustered configuration. Its scalability allows organizations to start with low capital expenditure and scale with growth, while delivering value-added services. Omnivox3D SIP PPS can be licensed separately or as part of the OmniVox3D SIP Application Server.

About APEX Voice Communications
Founded in 1989, APEX Voice Communications is a worldwide supplier of carrier-grade, multi-service SIP Application Servers to wireless and wireline operators, service providers, telephone equipment manufacturers, VARs and integrators. The high-density, open standards- based OmniVox3D SIP Application Server enables innovative, revenue- generating enhanced voice and video services to reach the market quickly, easily and cost-effectively. With over 15,000 installations across 95 countries, including more than 250 service providers, APEX continues to be a leader in delivering converged telephony service- ready solutions and service development platforms. For more information call +1 818.379.8400, visit www.apexvoice.com or e-mail sales@apexvoice.com. Value Added Resellers may also send an e-mail to varsales@apexvoice.com.

OmniVox3D is a registered trademark of APEX Voice Communications, Inc. Other trademarks are the property of their respective companies.