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-rw-r--r--src/mncc.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/src/mncc.c b/src/mncc.c
index 843c7e7..5e2a3a1 100644
--- a/src/mncc.c
+++ b/src/mncc.c
@@ -194,12 +194,20 @@ static void mncc_call_leg_connect(struct call_leg *_leg)
static void mncc_call_leg_ring(struct call_leg *_leg)
{
+ struct gsm_mncc out_mncc = { 0, };
struct mncc_call_leg *leg;
OSMO_ASSERT(_leg->type == CALL_TYPE_MNCC);
leg = (struct mncc_call_leg *) _leg;
- mncc_send(leg->conn, MNCC_ALERT_REQ, leg->callref);
+ mncc_fill_header(&out_mncc, MNCC_ALERT_REQ, leg->callref);
+ /* GSM 04.08 10.5.4.21 */
+ out_mncc.fields |= MNCC_F_PROGRESS;
+ out_mncc.progress.coding = 3; /* Standard defined for the GSMßPLMNS */
+ out_mncc.progress.location = 1; /* Private network serving the local user */
+ out_mncc.progress.descr = 8; /* In-band information or appropriate pattern now available */
+
+ mncc_write(leg->conn, &out_mncc, leg->callref);
}
static void mncc_call_leg_release(struct call_leg *_leg)