asterisk: Fix missing COORD messages during IMS MT call test

Change-Id: I1aab078d52d31382933511e5ca9ec427e0552ce1
---
M asterisk/Asterisk_Tests.ttcn
1 file changed, 11 insertions(+), 0 deletions(-)

diff --git a/asterisk/Asterisk_Tests.ttcn b/asterisk/Asterisk_Tests.ttcn
index 3dbb81c..9502ee8 100644
--- a/asterisk/Asterisk_Tests.ttcn
+++ b/asterisk/Asterisk_Tests.ttcn
@@ -878,9 +878,11 @@
 	f_ami_action_DedicatedBearerStatus(AMI_CLIENT,
 					   g_asterisk_chan_name,
 					   "Down", fail_others := false);
+	COORD.receive(COORD_CMD_CALL_FINISHED) from vc_conn_sip;
 
 	/* Trigger unregistration: */
 	f_sleep(1.0);
+	COORD.send(COORD_CMD_UNREGISTER) to vc_conn_sip;
 	AMI_CLIENT.clear;
 	f_AMI_IMS_unregister(ims_pars);
 

