Current Location ：
NEC PBX End-of-Life: Why Redstone REX IP-PBX Is the Smart Upgrade Path
Effective April 15, 2024, NEC Corporation announced the cessation of manufacturing for all on-premises Unified Communications solutions, including the widely deployed SL2100, SV9100, SV9300, and SV9500 platforms. As of December 31, 2024, these systems reached end-of-life, leaving thousands of organizations worldwide searching for a reliable, future-proof replacement.
Redstone Systems has positioned the REX IP-PBX series as the premier migration solution for NEC customers. With seamless analog and digital terminal compatibility, robust SIP trunking support, and enterprise-grade unified communications features, REX systems ensure business continuity without disruptive infrastructure overhauls.
Seamless Migration from NEC Platforms
The REX20 and REX200 models support direct analog terminal connectivity via FXS ports, allowing organizations to retain existing phones, fax machines, and intercom systems. For digital NEC deployments, Redstone offers gateway solutions that bridge proprietary digital protocols to standard SIP, preserving endpoint investments while enabling modern UC capabilities.
Advanced UC Features Beyond NEC Capabilities
Redstone REX IP-PBX delivers features that exceed legacy NEC offerings: peer-to-peer multi-site networking for distributed organizations, integrated call recording with centralized management, mobile softphone applications for iOS and Android, and WebRTC-based video conferencing. The built-in auto-attendant and IVR designer exceeds the flexibility of NEC's legacy configurations.
Investment Protection and Future-Proofing
Unlike NEC's shift to cloud-only Univerge Blue, Redstone maintains commitment to on-premise, hybrid, and cloud deployment options. Organizations can start with on-premise REX systems and migrate to Redstone UCaaS cloud services at their own pace, without forklift upgrades or forced subscription models.
Proven Government and Enterprise Deployments
Redstone has successfully completed NEC replacement projects across Southeast Asian government agencies, Malaysian federal courts, and hospitality chains. Each deployment maintains existing numbering plans, call routing logic, and inter-site networking configurations while adding modern security, management, and compliance capabilities.
Technical Specifications Comparison
REX200 supports up to 500 SIP extensions and 100 concurrent calls, with dual Gigabit Ethernet ports, AC/DC redundant power options, and 1+1 high availability configurations. The system supports TLS/SRTP encryption, LDAP directory integration, and REST API access for custom integrations—capabilities unavailable on legacy NEC SV-series platforms.
For organizations facing NEC PBX obsolescence, Redstone offers complimentary migration assessments, configuration conversion tools, and phased deployment planning. Contact our solutions team to evaluate your current NEC environment and design a zero-disruption upgrade path.
Redstone Systems, Inc. founded in Delaware, USA in December 2002, has been the ODM vendor for many well-known communications companies, serving the Southeast Asian market. In 2020, Redstone Systems will begin to return to the North America market with its self-developed brand.
Redstone has a complete product line of intelligent voice gateways, providing IP-PBXs, analog VoIP gateways (FXS/FXO), digital VoIP gateways (E1/T1), border appliances, and session boundary controllers (SBCs).
With advanced technology in digital signal processor (DSP), speech coding and speech processing, as well as efficient operational tools such as cloud remote management, auto provisioning, Redstone gateways are widely used in markets of enterprise communications, cloud communications, call centers, operators’ IMS/SIP trunks, bringing users friendly, efficient and reliable communication experience.
For more information about Redstone, You can follow us on Facebook, Linkedin, and Youtube to be the first to get the latest news.
