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Organizations running legacy Avaya PBX platforms increasingly face a difficult choice: renew expensive support contracts on aging hardware, or migrate to a modern platform. The decision is often forced by end-of-life announcements, rising maintenance costs, and the difficulty of finding engineers familiar with decades-old systems. Redstone offers a migration path that preserves business continuity while replacing the aging core.
The Legacy PBX Dilemma
Avaya systems have served enterprises reliably for many years, but aging TDM and early IP platforms carry growing risks. Spare parts become scarce, software patches stop arriving, and the skills required to maintain them retire along with the engineers who installed them. Meanwhile, modern requirements — SIP trunking, remote workers, cloud integration, mobile softphones — expose the limits of older architectures.
Migration Strategy: Parallel, Not Big-Bang
The lowest-risk migration runs the new platform alongside the old one. Redstone REX IP-PBX systems deploy in parallel with existing Avaya infrastructure, and RGW gateways bridge calls between the two environments. Users migrate in groups — by department, floor, or site — while the legacy system remains available as fallback until every group is stable.
| Migration Approach | Risk | Redstone Method |
|---|---|---|
| Big-bang cutover | High — one failure affects everyone | Avoided; phased migration only |
| Parallel running | Low — legacy remains as backup | REX + gateway bridge |
| Rip-and-replace | High — forces immediate full replacement | Preserve analog devices via gateways |
What Stays and What Changes
Extensions, dialing habits, published numbers, and critical call flows can remain familiar. What changes is the underlying platform: modern SIP trunking economics, centralized management across multiple sites, integrated unified communications, and a licensing model that scales with user count rather than locking organizations into proprietary growth paths.
Analog and Endpoint Preservation
Many Avaya deployments include analog devices that cannot simply be replaced: elevator phones, door entry systems, paging amplifiers, and fax machines. Redstone RGW gateways connect these devices to the new IP-PBX, so the migration does not depend on replacing every endpoint at once.
Long-Term Platform Fit
Redstone REX platforms provide an owned, on-premise alternative with an upgrade path to hybrid and cloud deployments. This appeals to organizations that want control over their communications data, predictable long-term costs, and the ability to integrate deeply with building systems, property management platforms, and other on-site infrastructure.
Redstone provides migration assessments, configuration mapping, and phased deployment planning for organizations transitioning away from Avaya and other legacy PBX platforms.
Request an Avaya migration assessmentRedstone 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.
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