osmo-sip-connector translates between MNCC and SIP protocols and hereby replaces the old LCR based approach. Osmo-sip-connector does not handle RTP by itself, an external SIP-PBX server which can accept SIP-Trunks is still required. The following image illustrates how the network components are laid out:

osmo-sip-connector with OsmoNITB

osmo-sip-connector with OsmoBSC and OsmoMSC

Binary Packages

Osmocom provides binary packages for several flavors of Debian and Ubuntu GNU/Linux on a variety of architectures (i586, x86_64, armhf, armv7l). Unless you are a software developer interested in developing on Osmocom, it is recommended you use those packages instead of building from source.

For more details see Binary_Packages


Howto (configure/run it)

See Howto

Source code

The source code is available from (module osmo-sip-connector).

Public read-only access is available via

git clone git://

You can browse it via cgit:

Contributions are welcome via Gerrit.

Test Suite

We have a TTCN-3 test suite as part of our Titan_TTCN3_Testsuites

Commercial Support

Commercial support as well as development, system integration and training services for this project are available from sysmocom

Updated by laforge almost 3 years ago ยท 84 revisions

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