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OpenScape Voice V11

Native SIP-based enterprise voice platform. Scalable to 100,000 users, 99.999% availability (under 5.5 minutes downtime/year). Simplex and Duplex (active-active two-node) deployment. On-prem, Private Cloud, Public/Hosted Cloud and Hybrid Cloud support. Microsoft Teams Direct Routing, Zoom integration. Ecosystem with OpenScape 4000, OS Business and SBC.

Mitel

Scope / deliverables

  • Native SIP B2BUA voice platform — 100,000 registered endpoints, 60,000 simultaneous SIP calls (Duplex); 5,000 users / 5,000 concurrent calls (Integrated Simplex)
  • Carrier-grade 99.999% availability — active-active two-node Duplex cluster; if one node fails the partner carries 100% call load; established calls not dropped; geographically separated nodes supported
  • Deployment models: Integrated Simplex (single server, 5,000 users; OSV + Media Server + UC + CMP + Deployment Service); Duplex (two nodes, 100,000 users, carrier-grade HA); Exchange (multi-vendor/TDM overlay — centralized UC management)
  • Cloud flexibility: Private Cloud (1,000–100,000 users, data-center centric); Public/Hosted Cloud (6,000 business groups multi-tenancy, for service providers); Hybrid Cloud — OpenScape Unify Phone (WebRTC) + Zoom Phone integration
  • Enterprise telephony features: Keyset (multi-line), call forward (all types), hunt group (circular/linear/UCD/parallel), pickup group, conferencing (16 parties), MLPP priority, DND, One Number Service, CSTA/CTI, CDR/QoS recording
  • Security: TLS v1.3, SRTP/SRTCP, role-based administration, activity logging, SUSE Linux SLES15 OS (Mitel-managed patches). All interfaces encrypted (service, admin, signaling, media)
  • Protocols and interfaces: SIP RFC 3261+, QSIG, CSTA (CTI), SOAP/XML, SNMP/MIB, CDR, SIP-Q, E.164, T.38 fax, ENUM, Time-of-Day routing, Voice VPN
  • Hardware: Lenovo SR630 (Mitel order position); Virtualization: VMware ESXi, KVM, MS Hyper-V
  • Ecosystem: OpenScape SBC (SIP trunk security), OpenScape Branch 550/550HA (branch survivability), OpenScape Desk Phone CP (SIP), UC Application, Mobile, Xpressions VM, Xpert, Contact Center, CMP management
  • Promark: capacity analysis (Simplex vs Duplex), deployment selection (on-prem/cloud/hybrid), SBC integration, Teams Direct Routing configuration, CMP setup and commissioning

Tags

OpenScape VoiceSIPPBXUCDuplexHACloudMicrosoft TeamsZoomV11SRTPTLSCarrier-grade

Vendor‑neutral approach: We select architecture/components based on need; platforms like Unify/Mitel can be positioned as options.