PBX & UC

OpenScape SBC V11

Software-based Session Border Controller. SIP trunk security, NAT traversal, DoS protection, TLS/SRTP encryption, media transcoding for OpenScape Voice and OS4000. Microsoft Teams Direct Routing certified. Physical (Lenovo SR250/SR630) and virtual (VMware, KVM, Hyper-V, ProxMox) deployment. CAPEX and OPEX (subscription) licensing.

Mitel

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Scope / deliverables

Securely terminate operator SIP trunks — DoS/DDoS protection, network topology hiding, SIP protocol validation
Microsoft Teams Direct Routing certified — keep corporate numbers in Teams + bridge to OS Voice/OS4000
Remote-worker and branch SIP access — secure registration beyond NAT, distributed SIP trunking with OpenScape Branch
Flexible deployment — physical Lenovo SR250/SR530/SR630 or virtual VMware/KVM/Hyper-V/ProxMox; CAPEX or OPEX (subscription) licensing
Technical detail: SIP DPI (deep-packet inspection), dynamic pinholes, stateful SIP validation, B2B-UA architecture
Technical detail: TLS v1.2/1.3 signaling encryption (core + access sides); SRTP media — relay (pass-through) and termination/mediation modes
Technical detail: media anchoring (for NAT) or media-bypass; codec transcoding and packet resizing
Technical detail: licensing Base + Redundancy (for HA) + Session (per concurrent SIP); Session licenses shared with OpenScape Branch
Technical detail: Teams SBA (Survivable Branch Appliance) support in V11; tested/certified with Turkey and regional SIP trunk operators
Technical detail: centralized SOAP/XML management via CMP + local HTTPS GUI (EN/DE)
Promark: SIP trunk security analysis, SBC sizing, Teams Direct Routing integration, CMP license management, installation and commissioning