OpenBTS OsmocomBB Asterisk

trixbox.t trixbox.t at yandex.ru
Mon Jul 7 19:55:48 UTC 2014


*Thanks to all who responded !!!*

In a network from scratch page describes how to connect the 2 phones.
open-bsc.cfg 2 time-slots:
*timeslot 0 -   phys_chan_config CCCH+SDCCH4
timeslot 1 -  phys_chan_config TCH/H*

When I run this option, then when I do a test call at 995 (hold music) lcr I
get:
*000000 ERROR (in gsm.cpp/audio_send() line 461): HR frame, but encoder not
created.                                     
000000 ERROR (in gsm.cpp/frame_receive() line 320): HR frame, but decoder
not created.
*

Because http://openbsc.osmocom.org/trac/wiki/OpenBSC says following:
*«TCH/H voice calls (they work in osmo-bsc, but not in osmo-nitb)»*

then I set
timeslot 0 -   phys_chan_config CCCH+SDCCH4
timeslot 1 -  phys_chan_config TCH/F
and the test call 995 (hold music) lcr works well.

I register in the test network is the second phone to call on the first
phone I need another channel TCH/F i.e. timeslot 2 - phys_chan_config TCH/F

I looked commit 687bc2318d18073d02756ef6ea5b96799f4b9aa7

*Allow transceiver application to handle multiple TRX and multiple phones*
There is no more one-to-one relation between application state, trx instance
and l1ctl link to the phone. An application can have many trx instances and
many l1ctl links to phones. Additionally each trx can have up to 8 relations
to one or different l1ctl links, one for each time slot. This allows to
split one TRX into several phones. (use only one ARFCN) Also it allows to
use multiple phones for multiple TRX. (use multiple ARFCN) 

Then I looked commit 50dd2b33d80902f3c0bc30e5cadb3c66a059f208

*Add option to transceiver application, to use second phone for TS 1*

@@ -43,6 +43,7 @@
void *l23_ctx = NULL;
static int arfcn_sync = 0;
static int daemonize = 0;
+static int second_phone = 0;
static void print_help(char *argv[])
{
@@ -56,6 +57,7 @@ static void print_help(char *argv[])
" -s --disable-color Don't use colors in stderr log output\n"
" -a --arfcn-sync ARFCN Set ARFCN to sync to\n"
" -p --arfcn-sync-pcs The ARFCN above is PCS\n"
+ " -2 --second-phone Use second phone for TS 1\n"
);
}
@@ -71,9 +73,10 @@ static void handle_options(int argc, char **argv, struct
app_state *as)
{ "disable-color", 0, 0, 's' },
{ "arfcn-sync", 1, 0, 'a' },
{ "arfcn-sync-pcs", 0, 0, 'p' },
+ { "second-phone", 0, 0, '2' },
};
- c = getopt_long(argc, argv, "hd:e:Dsa:p",
+ c = getopt_long(argc, argv, "hd:e:Dsa:p2",
long_options, &option_idx);
if (c == -1)
@@ -103,6 +106,9 @@ static void handle_options(int argc, char **argv, struct
app_state *as)
case 'e':
log_set_log_level(as->stderr_target, atoi(optarg));
break;
+ case '2':
+ second_phone = 1;
+ break;
default:
fprintf(stderr, "Unknow option %s\n", optarg);
exit(0);
@@ -172,6 +178,23 @@ int main(int argc, char *argv[])
/* Reset phone */
l1ctl_tx_reset_req(&as->l1l[0], L1CTL_RES_T_FULL);
+ if (second_phone) {
+ /* Establish l1ctl link */
+ rv = l1l_open(&as->l1l[1], "/tmp/osmocom_l2.2", l1ctl_recv, &as->l1l[1]);
+ if (rv)
+ exit(-1);
+ as->l1l[1].trx = as->trx[0];
+ as->l1l[1].as = as;
+ as->l1l[1].tx_mask = 0x02; /* TS 1 */
+ as->l1l[1].rx_mask = 0x02; /* TS 1 */
+ as->l1l[0].tx_mask = 0xe1; /* TS 5,6,7,0 */
+ as->l1l[0].rx_mask = 0x01; /* TS 0 */
+ as->trx[0]->l1l[1] = &as->l1l[1];
+
+ /* Reset phone */
+ l1ctl_tx_reset_req(&as->l1l[1], L1CTL_RES_T_FULL);
+ }
+
if (daemonize) {
rv = osmo_daemonize();
if (rv < 0) {

how to add third_phone for TS 2???



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