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The call id field in the DLCX message is missing. Use the endpoint
id as call id in all CRCX and DLCX messages.
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The function names if the API function in a_iface.c are not
very expressive. Besides of that, the prototypes are in the
wrong header file. This commit gives the function more
expressive names and moves the prototypes in the right header
file.
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Currently the rtp base port of the BTS is hardcoded (4000) and not
configurable. This patch adds VTY configuration options to make
it adjustable.
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Clearing all endpoints by sending a DLCX on startup has ben found
to be a bit too offensive. It also will not help against
inconsitancies that may occour during runtime (e.g. an overheard
DLCX during regular call teardown).
This reverts commit b669ea94cb78fd9b56ee8dd9392538151349f8ba.
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The MSC is aware of the assigned endpoints at all times, so it
will not assign an occupied endpoint to someone else. However,
if it has just restarted, there maybe lingering open endpoints.
This patch introduces a fairly simple soultion. Before a new
endpoint is seized (CRCX), a DLCX is send in advance. If the
endpoint was still occupied with a dead connection, it will
be freed. If it was free anyway, the DLCX will just have no
effect.
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If the MSC is crashing and restarting, it may leave some endpoints
open. The endpoints can not be re-used until they are deleted
(DLCX). This patch sends a DLCX to all possible endpoints (usually
this is in a countable range) in order to clear possible open
endpoints from a previous run
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When an MGCP endpoint is deleted, we need to mark its endpoint
id as unused, so other calls can used it. This is currently not
happening. This patch fixes that.
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Currently no DLCX command is sent to the mgcpgw when a call is over,
this leaves the endpoint open. This means that the endpoint can not
never be reused by other calls. This patch adds a DLCX that
terminates the the endpoint when the call is done.
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The MSC already has some basic call control handling mechanism, that
was primarily used with 3G before. However, the already existing
code that handles the 3G calls is also perfectly fine for handling
2G calls. This commit integrates the A interface without breaking
it for 3G.
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osmo-nitb becomes osmo-msc
add DIUCS debug log constant
add iucs.[hc]
add msc vty, remove nitb vty
add libiudummy, to avoid linking Iu deps in tests
Use new msc_tx_dtap() instead of gsm0808_submit_dtap()
libmgcp: add mgcpgw client API
bridge calls via mgcpgw
mgcp: hack RAB success from nano3G: patch first RTP payload
The ip.access nano3G needs the first RTP payload's first two bytes to read hex
'e400', or it will reject the RAB assignment. Add flag
patched_first_rtp_payload to mgcp_rtp_state to detect the first RTP payload on
a stream, and overwrite its first bytes with e400. This should probably be
configurable, but seems to not harm other femto cells (as long as we patch only
the first RTP payload in each stream). Only do this when sending to the BTS
side.
Change-Id: Ie13ff348117e892d41b8355ab6c24915301eaeaf
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Disable large parts of the code that depend on BSC presence.
Don't set msg->lchan nor msg->dst.
Don't use lchan in libmsc.
Decouple lac from bts.
Prepare entry/exit point for MSC -> BSC and MSC -> RNC communication:
Add msc_ifaces.[hc], a_iface.c, with a general msc_tx_dtap() to redirect to
different interfaces depending on the actual subscriber connection.
While iu_tx() is going to be functional fairly soon, the a_tx() is going to be
just a dummy for some time (see comment).
Add Iu specific fields in gsm_subscriber_connection: the UE connection pointer
and an indicator for the Integrity Protection status on Iu (to be fully
implemented in later commits).
Add lac member to gsm_subscriber_connection, to allow decoupling from
bts->location_area_code. The conn->lac will actually be set in iu.c in an
upcoming commit ("add iucs.[hc]").
move to libcommon-cs: gsm48_extract_mi(), gsm48_paging_extract_mi().
libmsc: duplicate gsm0808 / gsm48 functions (towards BSC).
In osmo-nitb, libmsc would directly call the functions on the BSC level, not
always via the bsc_api. When separating libmsc from libbsc, some functions are
missing from the linkage.
Hence duplicate these functions to libmsc, add an msc_ prefix for clarity, also
add a _tx to gsm0808_cipher_mode():
* add msc_gsm0808_tx_cipher_mode() (dummy/stub)
* add msc_gsm48_tx_mm_serv_ack()
* add msc_gsm48_tx_mm_serv_rej()
Call these from libmsc instead of
* gsm0808_cipher_mode()
* gsm48_tx_mm_serv_ack()
* gsm48_tx_mm_serv_rej()
Also add a comment related to msc_gsm0808_tx_cipher_mode() in two places.
Temporarily disable all paging to be able to link libmsc without libbsc.
Skip the paging part of channel_test because the paging is now disabled.
In osmo-nitb, paging is done on BSC level and MSC level "at the same time".
When the new MSC is fully operational, paging will be controlled separately on
the MSC level, and the BSC (RNC) level will be instructed over an IuCS or
A-interface to negotiate paging with the MS (UE). This MSC level paging does
not yet exist and will be added in subsequent commits.
msc_compl_l3(): publish in .h, tweak return value. Use new libmsc enum values
for return val, to avoid dependency on libbsc headers. Make callable from
other scopes: publish in osmo_msc.h and remove 'static' in osmo_msc.c
add gsm_encr to subscr_conn
move subscr_request to gsm_subscriber.h
subscr_request_channel() -> subscr_request_conn()
move to libmsc: osmo_stats_vty_add_cmds()
gsm_04_08: remove apply_codec_restrictions()
gsm0408_test: use NULL for root ctx
move to libbsc: gsm_bts_neighbor()
move to libbsc: lchan_next_meas_rep()
move vty config for t3212 to network level (periodic lu)
remove unneccessary linking from some tests
remove handle_abisip_signal()
abis_rsl.c: don't use libvlr from libbsc
Change-Id: I9cf80f9c2c8a53a29e42f000029e680a9922cb41
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