diff --git a/suites/aoip_encryption/register_a5_0_authopt.py b/suites/aoip_encryption/register_a5_0_authopt.py
index 75614e2..6a06078 100755
--- a/suites/aoip_encryption/register_a5_0_authopt.py
+++ b/suites/aoip_encryption/register_a5_0_authopt.py
@@ -22,6 +22,7 @@
 bsc.bts_add(bts)
 bsc.start()
 bts.start()
+wait(bsc.bts_is_connected, bts)
 
 ms.log_info()
 good_ki = ms.ki()
diff --git a/suites/aoip_encryption/register_a5_0_authreq.py b/suites/aoip_encryption/register_a5_0_authreq.py
index 07293d2..d6c67ea 100755
--- a/suites/aoip_encryption/register_a5_0_authreq.py
+++ b/suites/aoip_encryption/register_a5_0_authreq.py
@@ -22,6 +22,7 @@
 bsc.bts_add(bts)
 bsc.start()
 bts.start()
+wait(bsc.bts_is_connected, bts)
 
 ms.log_info()
 good_ki = ms.ki()
diff --git a/suites/aoip_encryption/register_a5_1_authreq.py b/suites/aoip_encryption/register_a5_1_authreq.py
index 190e5bb..b2c446f 100755
--- a/suites/aoip_encryption/register_a5_1_authreq.py
+++ b/suites/aoip_encryption/register_a5_1_authreq.py
@@ -22,6 +22,7 @@
 bsc.bts_add(bts)
 bsc.start()
 bts.start()
+wait(bsc.bts_is_connected, bts)
 
 ms.log_info()
 good_ki = ms.ki()