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osmo-sip-connector
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MNCC<->SIP bridge; attaches to OsmoMSC to interface with external SIP VoIP telephony https://osmocom.org/projects/osmo-sip-conector
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Harald Welte fd203f6a97
mncc: use 'const' to denote read-only input buffer/message 		5 years ago
contrib contrib: jenkins.sh: Disable doxygen in libosmocore build 5 years ago
debian debian/control: Fix URLs for homepage / git 5 years ago
doc/examples vty: Work on configuration of the MNCC to SIP gateway 7 years ago
src mncc: use 'const' to denote read-only input buffer/message 5 years ago
tests distcheck/tests: Add the referenced osmoappdesc.py for testing 7 years ago
.gitignore Use release helper from libosmocore 6 years ago
.gitreview Add git review config 6 years ago
COPYING Initial commit for a MNCC to SIP gateway (and maybe auth GW too) 7 years ago
Makefile.am Use release helper from libosmocore 6 years ago
README.asciidoc Write down some of the limitations of the current setup 7 years ago
configure.ac configure.ac: Depend on latest upstream libosmo-* 5 years ago
git-version-gen Fix git-version-gen 5 years ago
osmoappdesc.py distcheck/tests: Add the referenced osmoappdesc.py for testing 7 years ago

README.asciidoc 

Osmo SIP Connector
==================

Simple utility to map MNCC to SIP and SIP to MNCC. The VTY interface
can be used to make configurations. The code doesn't have any RTP or
transcoding support.

Call identities can be either the MSISDN or the IMSI of the subscriber.


Requirements of Equipment
^^^^^^^^^^^^^^^^^^^^^^^^^

* DTMF need to be sent using SIP INFO messages. DTMF in RTP is not
supported.

* BTS+PBX and SIP connector+PBX  must be in the same network (UDP must be
able to flow directly between these elements)

* No handover support.

* IP based BTS (e.g. Sysmocom sysmoBTS but no Siemens BS11)

* No emergency calls

Limitations
^^^^^^^^^^^

* PT of RTP needs to match the one used by the BTS. E.g. AMR needs to use
the same PT as the BTS. This is because rtp_payload2 is not yet supported
by the osmo-bts software.

* AMR SDP file doesn't include the mode-set params and allowed codec modes.
This needs to be configured in some way.