OpenBSC

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4317 discussions

Increasing Range of nano bts
by Akib Sayyed 12 Aug '11

12 Aug '11

hello guys i was wondering if we can increase range of nanoBTS for GSM. as it is having external antenna support using power amplifier. is it possible?? -- Akib Sayyed Matrix-Shell akibsayyed(a)gmail.com akibsayyed(a)matrixshell.com Mob:- +91-966-514-2243

2 1

Voice Data Interception in OpenBSC
by Earlence Fernandes 11 Aug '11

11 Aug '11

Hello, We are trying to use OpenBSC to build a few prototype services for a GSM network. As such, I need to know where in the code I can intercept the voice data that is received from an MS in the BTS. Ideally, I would like to have intercept points in the outgoing (to MS) and incoming (from MS) at the BTS in software. Note: I have just started to read the source code of OpenBSC, and as it is quite extensive, a few pointers will be useful. Feel free to correct me if I'm way off base here. -Earlence

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[PATCH] logging: fix parsing of logging mask (-d DMI case)
by pablo＠gnumonks.org 11 Aug '11

11 Aug '11

From: Pablo Neira Ayuso <pablo(a)gnumonks.org> Without this patch, `-d DMI' enables logging for DMI and DMIB. Signed-off-by: Pablo Neira Ayuso <pablo(a)gnumonks.org> --- src/logging.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/src/logging.c b/src/logging.c index 11d63ac..e85e8fc 100644 --- a/src/logging.c +++ b/src/logging.c @@ -157,6 +157,11 @@ void log_parse_category_mask(struct log_target* target, const char *_mask) for (i = 0; i < osmo_log_info->num_cat; ++i) { char* colon = strstr(category_token, ","); int length = strlen(category_token); + int cat_length = strlen(osmo_log_info->cat[i].name); + + /* Use longest length not to match subocurrences. */ + if (cat_length > length) + length = cat_length; if (!osmo_log_info->cat[i].name) continue; -- 1.7.2.5

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[PATCH] RSL: add timer for lchan activation/deactivation without BTS response
by Harald Welte 10 Aug '11

10 Aug '11

The timer callback will simply reset the lchan state to NONE in order to prevent channels getting stuck in 'activation requested' or 'deactivation requested' states. --- openbsc/src/libbsc/abis_rsl.c | 36 +++++++++++++++++++++++++++++++++++- 1 files changed, 35 insertions(+), 1 deletions(-) diff --git a/openbsc/src/libbsc/abis_rsl.c b/openbsc/src/libbsc/abis_rsl.c index f20b4f2..239c8c8 100644 --- a/openbsc/src/libbsc/abis_rsl.c +++ b/openbsc/src/libbsc/abis_rsl.c @@ -178,6 +178,27 @@ static void print_rsl_cause(int lvl, const uint8_t *cause_v, uint8_t cause_len) LOGPC(DRSL, lvl, "%02x ", cause_v[i]); } +static void lchan_act_tmr_cb(void *data) +{ + struct gsm_lchan *lchan = data; + + LOGP(DRSL, LOGL_NOTICE, "%s Timeout during activation!\n", + gsm_lchan_name(lchan)); + + lchan->state = LCHAN_S_NONE; +} + +static void lchan_deact_tmr_cb(void *data) +{ + struct gsm_lchan *lchan = data; + + LOGP(DRSL, LOGL_NOTICE, "%s Timeout during deactivation!\n", + gsm_lchan_name(lchan)); + + lchan->state = LCHAN_S_NONE; +} + + /* Send a BCCH_INFO message as per Chapter 8.5.1 */ int rsl_bcch_info(struct gsm_bts_trx *trx, uint8_t type, const uint8_t *data, int len) @@ -609,6 +630,11 @@ static int rsl_rf_chan_release(struct gsm_lchan *lchan, int error) msg->trx->bts->network->T3111 + 2, 0); } + /* Start another timer or assume the BTS sends a ACK/NACK? */ + lchan->act_timer.cb = lchan_deact_tmr_cb; + lchan->act_timer.data = lchan; + osmo_timer_schedule(&lchan->act_timer, 4, 0); + rc = abis_rsl_sendmsg(msg); /* BTS will respond by RF CHAN REL ACK */ @@ -626,6 +652,8 @@ static int rsl_rx_rf_chan_rel_ack(struct gsm_lchan *lchan) DEBUGP(DRSL, "%s RF CHANNEL RELEASE ACK\n", gsm_lchan_name(lchan)); + osmo_timer_del(&lchan->act_timer); + if (lchan->state != LCHAN_S_REL_REQ && lchan->state != LCHAN_S_REL_ERR) LOGP(DRSL, LOGL_NOTICE, "%s CHAN REL ACK but state %s\n", gsm_lchan_name(lchan), @@ -791,6 +819,8 @@ static int rsl_rx_chan_act_ack(struct msgb *msg) if (rslh->ie_chan != RSL_IE_CHAN_NR) return -EINVAL; + osmo_timer_del(&msg->lchan->act_timer); + if (msg->lchan->state != LCHAN_S_ACT_REQ) LOGP(DRSL, LOGL_NOTICE, "%s CHAN ACT ACK, but state %s\n", gsm_lchan_name(msg->lchan), @@ -1257,7 +1287,11 @@ static int rsl_rx_chan_rqd(struct msgb *msg) lchan->rsl_cmode = RSL_CMOD_SPD_SIGN; lchan->tch_mode = GSM48_CMODE_SIGN; - /* FIXME: Start another timer or assume the BTS sends a ACK/NACK? */ + /* Start another timer or assume the BTS sends a ACK/NACK? */ + lchan->act_timer.cb = lchan_act_tmr_cb; + lchan->act_timer.data = lchan; + osmo_timer_schedule(&lchan->act_timer, 4, 0); + rsl_chan_activate_lchan(lchan, 0x00, rqd_ta, 0); DEBUGP(DRSL, "%s Activating ARFCN(%u) SS(%u) lctype %s " -- 1.7.5.4

1 1

[PATCH 0/2] couple of openbsc fixes
by pablo＠gnumonks.org 10 Aug '11

10 Aug '11

From: Pablo Neira Ayuso <pablo(a)gnumonks.org> Hi Harald, These are a couple of fixes that we have applied to openBSC in the CCC camp. Daniel's fixes a crash, mine fixes one malformed TCH frame issue which was the cause of quite often unexpected closures of MNCC <-> LCR connections. You can find them in the fixes branch. Please, merge them. Daniel Willmann (1): libbsc: Don't free secondary lchan if it is NULL. Pablo Neira Ayuso (1): trau: fix wrong message size for GSM_TCHF_FRAME passed to MNCC openbsc/src/libbsc/bsc_api.c | 6 +++++- openbsc/src/libtrau/trau_mux.c | 1 + 2 files changed, 6 insertions(+), 1 deletions(-) -- 1.7.2.5

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[PATCH 0/3] updates for Nokia support
by pablo＠gnumonks.org 10 Aug '11

10 Aug '11

From: Pablo Neira Ayuso <pablo(a)gnumonks.org> Hi Harald, This patchset contains two updates for the Nokia support in the following scenario: the BSC stops after having configured the BTS, then the BTS is launched again but LAPD reports unknown TEI. To fix this, we report to the E1 driver about unknown TEI so it can resend the SABM message. ... and one patch from Daniel who thinks that we have to promote some logs messages from debugging to error. You can find them in the nokia-pablo branch. We are using them in the camp. Please, merge them. Daniel Willmann (1): mncc: promote log level from debug to errors Pablo Neira Ayuso (2): LAPD: Propagate lapd_receive() errors to the E1 driver NOKIA: Resend SABM on unknown TEI from LAPD openbsc/include/openbsc/signal.h | 1 + openbsc/src/libabis/e1_input.c | 1 + openbsc/src/libabis/input/dahdi.c | 20 ++++++++++++++++---- openbsc/src/libabis/input/lapd.c | 14 ++++++++++++-- openbsc/src/libabis/input/lapd.h | 16 ++++++++++++++-- openbsc/src/libbsc/bts_nokia_site.c | 9 ++++++++- openbsc/src/libmsc/gsm_04_08.c | 10 +++++----- 7 files changed, 57 insertions(+), 14 deletions(-)

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Sudden connection drop
by Seungju Kim 09 Aug '11

09 Aug '11

Hello, I have been testing the data setup and I found another issue. I couldn't really find out exactly what causes this. This happens rarely but it does happen time to time. I am attaching the log file of the issue. I looked through the log but I could not find anything else interesting in the log. http://pastebin.com/tQ0mcyeu This is the log file of the issue. I'll be glad to hear any thoughts about this. Envoyé de mon iPhone

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what type of RRLP protocol supported in OpenBSC
by Akib Sayyed 07 Aug '11

07 Aug '11

OpenBSC support RRLP protocol but in RRLP we have 2 modes E-OTD A-GPS what modes are supported?? if E-OTD is supported can we use OpenBSC to triangulate normal Cellphones like Motorola C123 ?? -- Akib Sayyed Matrix-Shell akibsayyed(a)gmail.com akibsayyed(a)matrixshell.com Mob:- +91-966-514-2243

2 1

GPRS issue after idle
by Seungju Kim 06 Aug '11

06 Aug '11

Hello,I got everything up and running. Including EDGE data. The throughput of the data from the osmo-sgsn is pretty good. But recently I have spotted a problem with the SGSN. The sgsn loses the phones SNDCP entity after idling or making a phone call. Please see the log from the sgsn http://pastebin.com/2W9dZdvW

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OpenBSC + LCR
by Gus Bourg 05 Aug '11

05 Aug '11

Hello all, I'm attempting to make my OpenBSC setup work with LCR and Asterisk. I'm not sure if the problem that I'm running into is specific to the nature of my setup (running a Nokia BTS) or is a misconfiguration issue with LCR. When I run without LCR and Asterisk I can call between phones, SMS etc. With LCR I have no such luck. I can place a call into the mobile from Asterisk, and the mobile rings, but when I answer the call hangs up. A pastebin of the LCR log can be found here: http://pastebin.com/DbM3TfFp Any insight into the cause would be much appreciated. :) Thanks, Gus

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