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Commercial support

siphon-sigtran is MIT-licensed and free to run in production. No open-core holdbacks, no paid tier of the SS7 engine: the routing brain, the transport, and the dialogue engine are all in the open-source crate. If you would rather not carry the integration and operations alone, commercial support is available from the addon's maintainers.

What support can cover

  • Node design & deployment: sizing and topology for an STP, HLR, SMSC or CAMEL SCP, from a single node to an HA pair or N+1. See Deployment and Kubernetes & scaling for the shape it builds on.
  • Interconnect integration: getting associations, routing, GTT, E.214 conversion and screening working reliably against real peers and their quirks.
  • Custom scripting & feature development: Python handlers and routing logic built to your call and message flows (portability dips, per-subscriber steering, termination logic), upstreamed into the project where it fits.
  • Performance tuning: profiling and capacity planning against your real traffic mix, including free-threaded CPython builds. See Performance.
  • SLA-backed support: production response commitments.

Want a particular feature built or fast-tracked? Feature sponsorship funds work that lands in the open-source project, so your use case ships sooner and everyone downstream benefits. Use the Sponsor button on the GitHub repository, or reach out through SIPhon to scope it.

siphon-sigtran is an addon for SIPhon; it is built on the published SS7 codec crates (mtp3, m3ua, m2pa, sccp, tcap, gsm_map, gsm_cap, async-sctp) and the SMS transfer-layer codec tpdu.