SIP B2BUA, done right
True back-to-back user agent. Separate dialogs per leg, codec transcoding, NAT traversal, STIR/SHAKEN signing — exactly what carrier-grade demands.
Telemancer is a modern multi-tenant PBX platform: strict tenant isolation, carrier-grade SIP signalling, SMS, and real-time AI translation — all on a Rust core engineered for ten thousand concurrent calls per node.
We're in private beta with a handful of design partners. If you're running a telephony platform and want to talk about Telemancer, we'd like to hear from you.
Built on open, audited foundations
Stop stitching together five vendors. Telemancer ships signalling, media, messaging, AI, and tenancy as a single, integrated runtime.
True back-to-back user agent. Separate dialogs per leg, codec transcoding, NAT traversal, STIR/SHAKEN signing — exactly what carrier-grade demands.
Strict per-tenant isolation at every layer — registration, dialplan, recordings, CDR, billing. JWT-scoped admin UI. Hard quotas enforced at admission, not after.
Send and receive SMS on any DID. HMAC-verified webhooks, idempotent delivery, per-tenant threads in the admin UI. No extra messaging vendor required.
One-click DID procurement, full port-in workflow with FOA tracking. Already have a trunk? Plug it in — Twilio, Bandwidth, Vonage, Telnyx, Lumen carrier-profiled out of the box.
Live speech-to-speech translation between callers. STT → translate → TTS pipeline runs out-of-process per call, with VAD, sentence boundary detection, and per-language voice mapping.
Rust engine, 1,800+ tests, zero-copy hot path, no GC. Every codec is a proven library — Opus, G.711, G.722, G.729a, openh264. Latency is measured in microseconds, not "feels fast."
TLS 1.2+, SRTP-required by trunk policy, IP ACLs evaluated pre-parse, append-only audit log with hash chain, Argon2id passwords, SHA-256 nonce replay protection.
Customers can register their phones on phone.acme.com instead of a shared host. Per-tenant TLS, certificate rotation via Let's Encrypt — branded SIP, no extra work for them.
Phones talk to the engine. Customers talk to the portal. Operators talk to both.
Rust SIP/RTP core. One shared instance serves thousands of tenants with logical isolation, hard call quotas, per-tenant codec allowlists, and zero-copy media plumbing.
Tenant control plane in C#. Stripe-backed billing, DID procurement, port-in tracking, Route 53 automation. Tenant from signup to working phone in minutes.
Customer admin and softphone in one. Flutter native client (Windows, macOS, Linux, iOS, Android), browser WebRTC softphone, and a React admin console.
The Rust core, modules, and admin UI are public under AGPL-3.0. Read every line. Self-host if you want. The hosted platform on this site adds the portal, billing, vanity DNS, and white-glove support on top.
If you're running a real telephony platform — or you'd like to — tell us about it. We'll be in touch when we're ready to onboard the next round.