diff options
author | Andreas Eversberg <jolly@eversberg.eu> | 2010-04-04 14:15:23 +0200 |
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committer | Andreas Eversberg <jolly@eversberg.eu> | 2010-04-04 14:15:23 +0200 |
commit | fcc494e3e9e277ad5e92a3f3f383e78889fe72f2 (patch) | |
tree | ee0042bc686ff2a9f5a789b5221bc38d29f445e4 | |
parent | 49e9ddf335f0b521a3005028b123b190f8aa8c23 (diff) |
Added minimal call application as required in GSM 04.08.
It represents the application ontop of layer 3 Call Control. It will reject any incomming call using appropiate cause value.
Since there is no real interface between call application and call control, I introduced MNCC for mobile side. (MNCCms) Applications can be:
- normal telephony application, implemented in the MS
- remote applications like PBX (MS as external line)
- "application-in-the-middle" (no comment ;-)
-rw-r--r-- | src/host/gsm48-andreas/mnccms.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/host/gsm48-andreas/mnccms.c b/src/host/gsm48-andreas/mnccms.c new file mode 100644 index 00000000..3f030d53 --- /dev/null +++ b/src/host/gsm48-andreas/mnccms.c @@ -0,0 +1,53 @@ +/* + * (C) 2010 by Andreas Eversberg <jolly@eversberg.eu> + * + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +/* + * support functions + */ + +void mncc_set_cause(struct gsm_mncc *data, int loc, int val) +{ + data->fields |= MNCC_F_CAUSE; + data->cause.location = loc; + data->cause.value = val; +} + +/* + * MNCCms dummy application + */ + +/* this is a minimal implementation as required by GSM 04.08 */ +int mncc_recv_dummy(struct osmocom_ms *ms, int msg_type, void *arg) +{ + struct gsm_mncc *data = arg; + int callref = data->callref; + struct gsm_mncc *rel; + + /* reject, as we don't support Calls */ + memset(&rel, 0, sizeof(struct gsm_mncc)); + rel.callref = callref; + mncc_set_cause(&rel, GSM48_CAUSE_LOC_USER, + GSM48_CC_CAUSE_INCOMPAT_DEST); + + return mncc_send(net, MNCC_REL_REQ, &rel); +} + + |