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Add an API to send MGCP messages to an MGCP GW, from the perspective of
an MSC instructing the GW to setup RTP streams.
Rationale: the mgcp_protocol.h is mostly for the MGCP GW itself, other
implementations forward incoming MGCP messages. So a simpler approach for an
MGCP GW client is useful.
Add general VTY commands that can be used to configure mgcpgw_client.
osmo-msc is going to use this to route RTP streams (for 3G at first).
Change-Id: I6fe365c4c89207f2172943cc456b508a207b1135
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Add file mgcp_common.c to implement the value strings for the
mgcp_connection_mode.
Add in a separate file because of the upcoming mgcpgw_client.c implementation,
introducing a file that contains implementations commonly used in MGCP GW as
well as its clients.
Change-Id: I6fe365c4c89207f2172943cc456b508a207b1135
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Change-Id: Ifa21513c007072314097b7bec188579972dc1694
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The SDP file handling will get more complicated in terms of
codec selection so let's remove it from the protocol handling
before we start blowing it up in size.
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So we can easily identify in the log message what refers to
libosmo-netif and what to libmgcp.
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This patch moves the files relevant to transcoding from
src/osmo-bsc_mgcp to src/libmgcp and src/include/openbsc. Makefiles
and include directives are being updated accordingly.
Sponsored-by: On-Waves ehf
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This patch adds the voice muxer. You can use this to batch RTP
traffic to reduce bandwidth comsuption. Basically, osmux transforms
RTP flows to a compact batch format, that is later on decompacted
to its original form. Port UDP/1984 is used for the muxer traffic
between osmo-bsc_nat and osmo-bsc_mgcp (in the BSC side). This
feature depends on libosmo-netif, which contains the osmux core
support.
Osmux is requested on-demand via the MGCP CRCX/MDCX messages (using
the vendor-specific extension X-Osmux: on) coming from the BSC-NAT,
so you can selectively enable osmux per BSC from one the bsc-nat.cfg
file, so we have a centralized point to enable/disable osmux.
First thing you need to do is to accept requests to use Osmux,
this can be done from VTY interface of osmo-bsc_nat and
osmo-bsc_mgcp by adding the following line:
mgcp
...
osmux on
osmux batch-factor 4
This just initializes the osmux engine. You still have to specify
what BSC uses osmux from osmo-bsc_nat configuration file:
...
bsc 1
osmux on
bsc 2
...
bsc 3
osmux on
In this case, bsc 1 and 3 should use osmux if possible, bsc 2 does
not have osmux enabled.
Thus, you can selectively enable osmux depending on the BSC, and
we have a centralized point for configuration from the bsc-nat to
enable osmux on demand, as suggested by Holger.
At this moment, this patch contains heavy debug logging for each
RTP packet that can be removed later to save cycles.
The RTP ssrc/seqnum/timestamp is randomly allocated for each MDCX that
is received to configure an endpoint.
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Since automake 1.13 INCLUDES is depricates and causes a warning
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libosmogsm is a new library that is distributed in the libosmocore.
Now, openbsc depends on it. This patch gets openbsc with this
change.
This patch also rewrites all include path to the new
osmocom/[gsm|core]
Signed-off-by: Pablo Neira Ayuso <pablo@gnumonks.org>
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... and make sure tests work again after restructuring
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