diff --git a/lmwsip.py b/lmwsip.py
index 73c8262..a8e987f 100644
--- a/lmwsip.py
+++ b/lmwsip.py
@@ -26,7 +26,7 @@ Support for:
 
     def __init__(self, user=None, password=None,
             host="sip-lmw.rws.nl", port=443, meetnet="LMW", ssl = True,
-            check_ssl = True, timeout = 10, log = None):
+            check_ssl = True, timeout = 10, log = None, clearbuf = False):
         """LmwSip(user, password, [host], [port], [meetnet], [ssl], [check_ssl], [timeout], [log])
 
 user(optinal): Lmw user name
@@ -38,6 +38,7 @@ ssl(optional): Default true
 check_ssl(optional): true
 timeout(optional): 10
 log(optional): None
+clearbuf(optinal): None
 
 Opens the connection and logs in
 """
@@ -49,6 +50,7 @@ Opens the connection and logs in
         self.ssl         = ssl
         self.check_ssl   = check_ssl
         self.timeout     = timeout
+        self.clearbuf    = clearbuf
         self._socket     = None
         if (log != None):
             self.log = log
@@ -130,6 +132,19 @@ connects to lmw with tcp using the values of the object creation.
             pass
         self._socket = None
 
+    def emptysocket(self):
+        """emptysocket()
+
+If clearbuf read all the data from the socket and ignore it.
+"""
+        if self._socket != None and self.clearbuf:
+            try:
+                self._socket.settimeout(0)
+                b = self._socket.recv(4096)
+            except Exception as e:
+                pass
+            self._socket.settimeout(self.timeout)
+
     def send(self, sipcmd):
         """send(sipcmd)
 
@@ -141,6 +156,7 @@ send a sip command to the server
                 if re.match("^LI", logcmd, re.IGNORECASE):
                     logcmd = re.sub(",.*", ", ******", logcmd)
                 self.log.debug("LmwSip.send(%s)" % logcmd)
+                self.emptysocket()
                 self._socket.sendall(sipcmd.encode('ascii'))
             except Exception as e:
                 self.log.error("LmwSip.send(%s) failed: %s", sipcmd, e)