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-rw-r--r--gsm_call_fsm.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/gsm_call_fsm.py b/gsm_call_fsm.py
index 0c36ddb..644a784 100644
--- a/gsm_call_fsm.py
+++ b/gsm_call_fsm.py
@@ -127,6 +127,7 @@ class GsmCallFsm(pykka.ThreadingActor):
def __init__(self, mncc_ref, ctrl_ref = None, rtp_bridge = True, codecs_permitted = GSM48.AllCodecs):
super(GsmCallFsm, self).__init__()
self.mncc_ref = mncc_ref;
+ self.calling = self.called = None
self.callref = self._get_next_callref()
self.ctrl_ref = ctrl_ref
self.rtp_bridge = rtp_bridge