Did you know?
99.999%
99.999% uptime means less than 5½ minutes of downtime per year.
60%
60% lower carrier costs are achievable with SIP trunking.
50+
50+ years NEC has supported mission-critical communications in Australia.
Overview
OpenScape Voice by NEC, powered by Mitel, is a SIP-based enterprise telephony solution designed for organisations where communications cannot fail. Built for mission-critical environments, it delivers carrier-grade resilience with 99.999% uptime, geo-redundancy, and survivable branches to ensure voice continuity during outages.
The platform offers full deployment flexibility (on-premises, cloud, or hybrid), enabling organisations to modernise at their own pace while protecting existing PBX and SIP investments. Seamless interoperability with Microsoft Teams, Zoom, and SIP carriers means users keep their preferred collaboration tools while adding enterprise-grade reliability.
Backed by NEC’s ISO 27001-certified, 24×7 Australian support, OpenScape Voice provides secure, compliant, and future-ready communications that scale to over 100,000 users per system.
Enterprise telephony built for when downtime is not an option.
Why NEC?
For over 120 years, NEC has led global innovation, and for 50+ years, NEC Australia has delivered secure ICT and managed services across government, healthcare, finance, utilities, education, and law enforcement. We know the demands of life-critical industries - from powering Triple Zero (000) emergency services to ensuring resilience for utilities that keep essential services running.
Unlike one-size-fits-all providers, NEC combines systems integration heritage with a consultative, vendor-neutral approach. Our ISO 27001-certified services provide proactive monitoring, lifecycle management, and SLA-backed assurance, supported by 24×7 Australian teams.
This blend of global scale and local expertise makes NEC a trusted partner for organisations where downtime is not an option.
Technology resilience, delivered locally by a trusted global leader.
Capabilities
Carrier-Grade SIP Telephony
Five-nines availability and geo-redundant resilience.
Flexible Deployment
On-premises, private/public cloud, or hybrid.
Survivable Branches
Local continuity during WAN or core failures.
High Scalability
Up to 100,000 users per system, 500,000 networked.
Secure by Design
TLS 1.3, SRTP encryption, and hardened OS baseline.
Seamless Interoperability
Certified integration with Microsoft Teams, Zoom, and SIP carriers.
Managed Service Assurance
24×7 NEC Service Desk, Digital Workplace Portal, and SLA-backed operations.
Compliance Ready
ISO 27001-certified operations and audit-ready encryption for regulated industries.
Insights
5 Tips to Control UC Costs Without Compromising Experience
The Future of Hybrid Meetings: Why as-a-Service is the Way Forward
The Hybrid Collaboration Checklist - 7 Essentials Every Workplace Must Have
What’s Next for Unified Communications - AI Immersive Collaboration and Beyond
Government & Public Sector
Use Case
Cross-Agency Collaboration
Situation
Several agencies ran siloed PBXs and a patchwork of calling/conferencing tools.
Challenge
Interoperability, security reviews, and duplicated trunks slowed policy work.
Solution
NEC implemented OpenScape Voice as a central SIP core with SBC integration for Teams/Zoom and shared SIP trunks.
Outcome
Faster inter-agency meetings, simplified governance, and measurable trunking savings.
Education
Use Case
Hybrid Learning at Scale
Situation
A university was scaling hybrid learning across multiple campuses.
Challenge
Multiple tools drove ticket volumes and inconsistent user experiences.
Solution
Central OSV core with Teams/Zoom interop; softphone clients for staff and students.
Outcome
~40% fewer UC support tickets and a consistent experience across faculties/campuses.
Healthcare
Use Case
Secure Telehealth at Scale
Situation
A statewide health network expanded virtual consultations for rural patients.
Challenge
Consumer-grade tools raised privacy and reliability concerns.
Solution
OSV with TLS 1.3 signalling and SRTP media, fronted by SBC for secure remote access.
Outcome
Secure, high-quality consultations with audit-ready logging and improved patient trust.
Utilities
Use Case
Outage Response Coordination
Situation
Control rooms, depots and field crews relied on disparate systems.
Challenge
Delays during incidents prolonged restoration times.
Solution
OSV core across HQ/depots with survivable branches at key sites; SBC enabled secure mobile/remote access.
Outcome
~25% faster field coordination and improved customer satisfaction during outages.
Police & Law Enforcement
Use Case
Emergency Dispatch Resilience
Situation
Dispatch operations depended on legacy PBXs vulnerable to outages.
Challenge
Any downtime threatened emergency response coordination.
Solution
Active/Active OSV deployed in geo-separated data centres with Survivable Branch at precincts.
Outcome
Uninterrupted dispatch communications even during system or network failures.
Financial Services & Insurance
Use Case
Client Advisory & Audit Readiness
Situation
A bank was modernising client engagement across branches and advisory teams.
Challenge
Downtime and compliance gaps risked customer trust.
Solution
Active/Active OSV with TLS/SRTP and a hardened OS baseline, delivered under NEC’s ISO 27001-aligned services.
Outcome
Zero unplanned downtime and clean audits, strengthening client confidence.
Partners
