When the BTS is is not an ipaccess BTS, the BTS can only be an E1 bts.
In that case E1 endpoints must be used and there will be no RTP stream
setup towards the BTS.
Change-Id: I4f1f39bf90b0a7c9ea448dab255daf99cd36bb4a
Related: OS#2547
The functions lchan_rtp_fsm_timer_cb() and lchan_rtp_fsm_cleanup() only
used in lchan_rtp_fsm.c, lets make them static.
Change-Id: I31940aff166ccd7a9612574536674e4e483a3cb9
On a TS 12.21 spec compliant BTS, each Um traffic channel must be mapped
to an E1 sub-slot on the terrestrial back-haul. This happens via
the CONNECT TERRESTRIAL TRAFFIC message.
We always had code to sen that message, but it got deactivated when
ts->pchan_is / ts->pchan_from_config was introduced. Of course,
while we are bringing up OML, there is no 'pchan_is' set yet. We only
have 'pchan_from_config' and must use it.
Change-Id: I8988a027b0e897bd9dda460590f974d6be34a4fa
Prior to this patch, ACC ramping was only used to go 0->N in the
number of allowed ACCs during BTS startup. It could optionally
dynamically stretch or extend the ramping time based on channel load.
With this patch, ACC ramping is kept alive during the entire time the
BTS is active, and subset of allowed ACCs can now be incresed or
decreased based on channel load. A new VTY command
"access-control-class-ramping-chan-load" is added to configure a lower
and an upper threshold. Channel load under the low threshold will
potentially trigger an increment of the subset size of allowed ACCs,
while a channel load over the upper threshold will potentially trigger
the opposite (a decrease in size).
The time between checks is kept fixed per VTY command (reusing old
"access-control-class-ramping-step-size"), but the "dynamic" option
is deprecated and ignored from now on since it provides nothing valuable
in the new implementation, because the size always dynamically changes
based on channel load (configured thresholds).
Related: SYS#4912
Change-Id: Id17f947c92cdfc0eb9541a9bf066338169caaeb5
[ 160s] acc.c: In function 'get_highest_allowed_acc':
[ 160s] acc.c:117:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
[ 160s] for (int i = 9; i >= 0; i--) {
[ 160s] ^
[ 160s] acc.c:117:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
[ 160s] acc.c: In function 'get_lowest_allowed_acc':
[ 160s] acc.c:127:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
[ 160s] for (int i = 0; i < 10; i++) {
[ 160s] ^
[ 160s] Makefile:617: recipe for target 'acc.o' failed
Change-Id: I03722854634b2d6d6f1abac7c7553762b5fc6890
The files have been used successfully in the past weeks to bring up a
variety of different combinations of Ericsson DUG20 + RUS.
Change-Id: I046f786d68f7cd3fd21693142bd1315bf40696f5
See updated documentation section in manuals/chapters/bts.adoc regarding
an explanation on how the system works.
Related: SYS#4911
Change-Id: I952c9eeae02809c7184078c655574ec817902e06
The RLL ERR IND is sent by the BTS in any number of casese that lead
to a disconnect of a radio link layer, for example due to bad RF
conditions. The lchan FSM currnently prints error messages about
this event not being permitted, leading to confusion among users.
Let's ignore this event, I don't think the lchan FSM should or could
be doing anything as a result. We could also simply remove that event,
but let's keep it in case we should need it in the future.
Change-Id: I07aad62d25566d6068a95797915bb97fc3c66328
With upcoming next commit, the file will contain far more code that
simply ramping, so rename it to be more generic.
Change-Id: I8c368ab87e264439dea4ccf556821a44664cdbb0
Those adoc files are only used by osmo-bsc.git and openbsc.git
(osmo-nitb), and the later is deprecated and no longer maintained, which
means new features are only added to BSC. Hence it makes no sense to
keep the doc shared between both.
Change-Id: I20aa60d2f4111d66e922f3e2a73a20352ec1f7e4
CentOS is happy with the spec file as-is, but OpenSuSE is more strict:
[ 62s] osmo-bsc-1.6.0.191.bd5b-lp152.1.1.x86_64.rpm: directories not owned by a package:
[ 62s] - /usr/share/doc/packages/osmo-bsc/examples/osmo-bsc/ericsson
[ 62s] - /usr/share/doc/packages/osmo-bsc/examples/osmo-bsc/nokia
[ 62s] - /usr/share/doc/packages/osmo-bsc/examples/osmo-bsc/siemens
Change-Id: I40ad5d38b968db847cf5f733f82163ecac1151e0
The function initializes the struct owned by a bts, so it makes sense to
have it done there instead of somewhere else later.
It was most probably put in bsc_vty when it was initially introduced
because of all the data structure and object file mess I untangled
during last set of patches.
Change-Id: I66c4b208583e92070793183b83b3a7b7edf6ba00
In the big mess of gsm_data we reached a point where we have multiple
functions doing the same thing, most probably because it's hard finding
stuff in there. Let's drop one of them (the one which less callers) and
move it to bts.*, where it belongs.
Change-Id: I9071a0ab250844619280fbe2be63ed99f2c87eb1
Place all code related to the object into the related file.
Having all the data model in one file made sense in early stage of
development to make progress quickly, but nowadays it hurts more than
helps, due to constantly growing size and more and more bits being
added to the model, gaining in complexity.
Currently, having lots of different objects mixed up in gsm_data.h is a hole
of despair, where nobody can make any sense were to properly put new stuff
in, ending up with functions related to same object in different files
or with wrong prefixes, declarations of non-existing functions, etc.
because people cannot make up their mind on strict relation to objects
in the data model.
Splitting them in files really helps finding code operating on a
specific object and helping with logically splitting in the future.
Change-Id: I00c15f5285b5c1a0109279b7ab192d5467a04ece
In various places that receive an error cause from RSL and place it in
lchan.release.rsl_error_cause, translate it to an RR cause and place that in
the recently added lchan.release.rr_cause. Hence the RR Channel Release message
now reflects more specific error causes when the reason for the error was
received in an RSL message's cause value.
Change-Id: I46eb12c91a8c08162b43dd22c7ba825ef3bbc6ac
In lchan.release, add 'cause_rr', and set RR Channel Release message's cause
value to lchan.release.cause_rr.
In lchan_release(), do not set lchan.release.rsl_error_cause to the RR cause
value, these are unrelated. Store in new lchan.release.cause_rr instead. The
rsl_error_cause is apparently only used for logging, except for one place in
lchan_fsm_wait_activ_ack() that compares it to RSL_ERR_RCH_ALR_ACTV_ALLOC, so
there should not be a functional difference by this fix.
Propagate the BSSMAP Clear Command cause to the RR Channel Release:
Add struct gscon_clear_cmd_data as event data for GSCON_EV_A_CLEAR_CMD -- so
far it sent the is_csfb flag, add the gsm0808_cause; invoking the event happens
in bssmap_handle_clear_cmd().
Adjust event handling in gscon_fsm_allstate(); there, pass the cause to
gscon_release_lchans(). In gscon_release_lchans(), pass the cause to
gscon_release_lchan(), and then lchan_release(), which sets the new
lchan.release.cause_rr to the passed cause value.
As soon as the lchan FSM enters the proper state, it calls
gsm48_send_rr_release(). There, set the cause value in the encoded message to
lchan.release.cause_rr.
Interworking with osmo-msc: so far, osmo-msc fails to set the Clear Command
cause code for normal release, it just passes 0 which amounts to
GSM0808_CAUSE_RADIO_INTERFACE_MESSAGE_FAILURE. Before this patch, osmo-bsc
always sent GSM48_RR_CAUSE_NORMAL in the RR Channel Release, and after this
patch it will receive 0 == GSM0808_CAUSE_RADIO_INTERFACE_MESSAGE_FAILURE from
osmo-msc and more accurately translate that to GSM48_RR_CAUSE_PROT_ERROR_UNSPC.
This means in practice that we will now see an error cause in RR Channel
Release instead of GSM48_RR_CAUSE_NORMAL when working with osmo-msc. For
changing osmo-msc to send GSM0808_CAUSE_CALL_CONTROL instead (which translates
to GSM48_RR_CAUSE_NORMAL), see OS#4664 and change-id
I1347ed72ae7d7ea73a557b866e764819c5ef8c42 (osmo-msc).
A test for this is in Ie6c99f28b610a67f2d59ec00b3541940e882251b
(osmo-ttcn3-hacks).
Related: SYS#4872
Change-Id: I734cc55c501d61bbdadee81a223b26f9df57f959
3GPP 44.018 10.5.2.1e defines the EARFCNs encoded in the 'Cell selection
indicator after release of all TCH and SDCCH IE' as follows:
<Cell Selection Indicator after release of all TCH and SDCCH value part> ::=
[...]
| 011 { 1 <E-UTRAN Description : < E-UTRAN Description struct >> } ** 0
So after a 3-bit discriminator of '3' there can be multiple E-UTRAN
Descriptions, and each of them starts with a '1' bit to indicate that another
item follows. Finally there is a '0' bit to indicate the list end.
Before this patch, osmo-bsc only encoded the first '1' bit, and failed to
repeat this before each following E-UTRAN Description. Fix that by moving the
'1' encoding into the loop.
The final '0' was missing. Add it.
With these changes, adjust the size calculation in
CELL_SEL_IND_AFTER_REL_MAX_BITS to match.
Also fix CELL_SEL_IND_AFTER_REL_MAX_BYTES by using OSMO_BYTES_FOR_BITS()
instead of the inaccurate (n/8)+1.
A test for this is in I882c5e1f70bcc4833fc837a95c900ce291919cc5
(osmo-ttcn3-hacks).
Related: SYS#4871 SYS#4872
Change-Id: I59e427e4ebb1c6af99b27a15c40fed82457ac8ab
This adds osmo-bsc config files for Ericsson RBS2308, Siemens BS-11 and
Nokia InSite which were working in July 2020 to get the BTS initialized,
recognized by MS and up to signalling.
Voice/TRAU support is still missing in OsmoBSC, but should be added
relatively soon.
Change-Id: I1fe15cc3654025e52fc1110ac3052fb1f7a009a0
Depends: osmo-python-tests I896b99032d94ba0cdd340a8eed7c7b625661ad69
Closes: OS4651
This option has been deprecated back in 2018 [1], but for some
reason we still have it in the configuration examples, so it
prevents osmo-bsc to allocate TCH/F on dynamic timeslots.
[1] Ib2335d02ea545aff837aadd49f15b2fdb418c46e
Change-Id: Icc82f6178d18dccc7207485b25dc3bdad91a0052
Related: SYS#5014
New define is available since libosmocore 1.1.0, and we already require
1.3.0, so no need to update dependenices.
Let's change it to avoid people re-using old BSC_FD_* symbols when
copy-pasting somewhere else.
Change-Id: Ia5a656567d212fa265aef1375d714d0c5fee5dd6
We don't want to fprintf directly, and we want to make sure to always
log as much context as possible.
Change-Id: I29ec935669175a08cb42e1666559b681c50a6e72
When we introduced the timeslot FSMs in
I82e3f918295daa83274a4cf803f046979f284366, the BS-11 stopped to work, as
the timeslot FSMs are never brought out of NOT_INITIALIZED stage.
Closes: OS#4666
Change-Id: I557cb105247552887ca47a0f2c1b06b71bca6cac
There are a number of OML messages which are not seen on IP based
BTSs. Those are perfectly normal and expected on E1 based BTS.
Change-Id: Icd87fc9f3652b21f9d569af2572d080c9ac89e8b
Closes: OS#4665
Up to 16 SI2quater are multiplexed; each fits 3 EARFCNS, so the practical
maximum is 48 (of course depending on how many bits are used by other SI2quater
elements).
Change-Id: Iabeed10053ee5899b4def3509aedd25abb2410a9
In rest_octets.c append_earfcn(), the unconditional bits added are 40, not 25.
Removing only 25 bits from the budget resulted in malformed SI2quater starting
with 4 configured EARFCNs, by adding more EARFCNs than fit in 20 bits.
These malformed SI2quater were also expected in gsm0408_test.c. Update the
expected SI2quater to what is being generated now. This patch passes the ttcn3
testing added in I45382f88686ca60e68569e93569fc4cfb63a0e0d, which provides some
confidence that the coding expected in gsm0408_test.c is now correct.
Related: OS#4652
Change-Id: I5df269f713456a6ccbb874d6b7faac4a6f123c67
According to 3GPP TS 44.018, section 9.1.2.4, if at least one of
the Channel Description IEs indicates frequency hopping, one and
only one of the following IEs shall be present:
- Mobile Allocation, after time (see 10.5.2.21);
- Frequency List, after time (see 10.5.2.13).
For some reason, osmo-bsc includes the GSM48_IE_MA_BEFORE instead
of GSM48_IE_MA_AFTER - fix this.
According to section 9.1.2.6 of the same document, if any of the
Mobile Allocation IEs (before/after time) is present, then the
network must ensure that either the MS has already received the
the proper reference cell frequency list (CA), or that the Cell
Channel Description IE (see 10.5.2.1b) is present.
Without this IE, the phone I was using in my testing setup sends
RR Status message with cause #100 "conditional IE error".
Fortunately, we already have generate_cell_chan_list(), since we
also need to include the Cell Channel Description in SI Type 1.
Change-Id: I43ef66c109b107ebcaa1cb6197637701b13b3787
Related: SYS#4868, OS#4545, OS#4546
Refactor osmo_bsc_sigtran_init(): invoke osmo_sccp_simple_client_on_ss7_id()
exactly once per cs7 instance.
When introducing MSC pooling to the ttcn3-bsc-tests, it became apparent that
osmo-bsc rapidly huts down and re-creates the SCTP link for each configured
MSC. This manifested in an osmo-stp crash (fixed in libosmo-sccp
I9b3ae6dfcf6efeabb7fb6c33503d1d7924fec2fa). I first tried to fix it by only
restarting an ASP when it wasn't found in the AS yet, but that created obscure
problems described in OS#4635 which in turn completely broke ttcn3-msc-tests.
This solution keeps osmo_sccp_simple_client_on_ss7_id() unchanged and instead
invokes it exactly once per cs7 instance.
Keep the same auto-config logic, but change and improve the mechanisms to
achieve it:
Replace the fail_on_next_invalid_cfg flag with a more accurate check against
remote PC collisions between configured MSCs. Before this patch, the code made
sure that at most one MSC lacks an explicit remote address (and cs7 instance),
so that no two MSCs get the same default remote PC. This patch more accurately
checks that no two MSCs use the same remote PC on the same cs7 instance,
period, whether implicitly or explicitly configured.
Before this patch, the logic amounted to creating cs7 instance 0 implicitly,
but it was not very obvious: If an 'msc' has an msc-addr configured, it is
associated with the cs7 instance that has this addr in its address book. If it
has no msc-addr configured, then msc->a.cs7_instance_valid == false. In that
case, msc->a.cs7_instance is still 0 (from talloc_zero) and hence
osmo_sccp_simple_client_on_ss7_id(ss7_id = 0) created cs7 instance 0. In this
patch, that logic remains unchanged, but is written out more explicitly: if any
msc has no cs7 instance associated, make sure to create cs7 instance 0
beforehand.
Then iterate all osmo_ss7_instances. If at least one MSC uses it, set up the
SCCP client on it and connect all MSCs as appropriate.
Related: OS#4625 OS#4635
Change-Id: I16f4f7f447f69525a2f57c4649ab295112904d6a
The IPACC protocol is an extension to the conventional RSL protocol
to negotiate ip address and port for RTP/VoIP. This protocol is BTS
specific (sysmobts, ip-access nanobts) and not used with E1 BTSs
The bsc VTY is able to trigger certain IPACC functions for debug
purposes. Some of those commands do not check if the BTS is really of
type IP-access before trying to send an IPACC command. Let's add
checks to prevent IPACC messages to be sent to E1 or otherwise
incompatible BTSs models.
Change-Id: I9ee78b6b1d342abaccc09a87dee6af79e76e5468
Related: OS#2547
According to 3GPP TS 48.058 (version 15.0.0), section 9.3.5, the
3GPP TS 24.008 "Mobile Allocation" shall for compatibility reasons
be included but empty, i.e. the length shall be zero. Therefore,
no matter if frequency hopping is in use or not, send it empty.
Change-Id: Ie224a45f10522332eac653fa371564f022108c3f
Related: OS#4545, OS#4546
Neels Hofmeyr
Philipp Maier
Harald Welte
Pau Espin
Vadim Yanitskiy