The Osmocom Signal Transfer Point is a SS7 Transfer Point implementing MTP routing as well as SIGTRAN SG (Signaling Gateway) functionality. It is not intended as a standalone STP nor implements it legacy E1/T1 based signalling links - instead it should be seen as a softwaremodule to enable the other Osmocom cellular network elements to be connected via SS7 SIGTRAN.

On customer request, we are able to enhance the OsmoSTP to support additional protocols like M2UA and M2PA.

Like all sysmocom cellular network infrastructure elements, OsmoSTP can be provided either in source code format (C code for Linux) or as binary packages for Debian and Ubuntu GNU/Linux distributions. Upon request, we can also prepare packages for other Linux distributions or container images, e.g. Docker or Kubernetes.

sysmocom is offering different support levels for the Osmocom based cellular network elements. This gives you the trust to get support to your needs in the most effective and economic way.

Software / Logical specification

Transport protocols

  • SCTP + M3UA + SCCP

  • SCTP + SUA

  • IPA + SCCP (experimental)

Operating System


More technical information can be found on Osmocom.