diff --git a/matrix_client/api.py b/matrix_client/api.py
index 4ff54f69..77f14806 100644
--- a/matrix_client/api.py
+++ b/matrix_client/api.py
@@ -254,6 +254,76 @@ def send_message_event(self, room_id, event_type, content, txn_id=None,
             params["ts"] = timestamp
         return self._send("PUT", path, content, query_params=params)
 
+    def send_call_invite(self, room_id, call_id, sdp, version, lifetime,
+                         msgtype="m.call.invite", timestamp=None):
+        """Perform PUT /rooms/$room_id/send/m.room.call.invite
+
+        Args:
+            room_id (str): The room ID to send the event in.
+            call_id (str): Call identifier string.
+            sdp (dict): Session Description Protocol dict.
+            version (int): The version of the VoIP specification this messages adheres to.
+            lifetime (int): The time in milliseconds that the invite is valid for.
+            timestamp (int): Set origin_server_ts (For application services only)
+        """
+        return self.send_message_event(
+            room_id, "m.call.invite",
+            self.get_call_invite_content(call_id, sdp, version, lifetime),
+            timestamp=timestamp
+        )
+
+    def send_call_answer(self, room_id, call_id, sdp, version, lifetime,
+                         msgtype="m.call.answer", timestamp=None):
+        """Perform PUT /rooms/$room_id/send/m.room.call.answer
+
+        Args:
+            room_id (str): The room ID to send the event in.
+            call_id (str): Call identifier string.
+            sdp (dict): Session Description Protocol dict.
+            version (int): The version of the VoIP specification this messages adheres to.
+            lifetime (int): The time in milliseconds that the answer is valid for.
+            timestamp (int): Set origin_server_ts (For application services only)
+        """
+        return self.send_message_event(
+            room_id, "m.call.answer",
+            self.get_call_answer_content(call_id, sdp, lifetime, version),
+            timestamp=timestamp
+        )
+
+    def send_call_candidates(self, room_id, call_id, candidates, version,
+                             msgtype="m.call.candidates", timestamp=None):
+        """Perform PUT /rooms/$room_id/send/m.room.call.candidates
+
+        Args:
+            room_id (str): The room ID to send the event in.
+            call_id (str): The call identifier string.
+            candidates (array of dicts): The candidates to send:
+            each array element contains 'candidate', 'sdpMLineIndex', and 'sdpMid'
+            version (int): The version of the VoIP specification this messages adheres to.
+            timestamp (int): Set origin_server_ts (For application services only)
+        """
+        return self.send_message_event(
+            room_id, "m.call.candidates",
+            self.get_call_candidates_content(call_id, candidates, version),
+            timestamp=timestamp
+        )
+
+    def send_call_hangup(self, room_id, call_id, version,
+                         msgtype="m.call.hangup", timestamp=None):
+        """Perform PUT /rooms/$room_id/send/m.room.call.hangup
+
+        Args:
+            room_id (str): The room ID to send the event in.
+            call_id (str): The call identifier string.
+            version (int): The version of the VoIP specification this messages adheres to.
+            timestamp (int): Set origin_server_ts (For application services only)
+        """
+        return self.send_message_event(
+            room_id, "m.call.hangup",
+            self.get_call_hangup_content(call_id, version),
+            timestamp=timestamp
+        )
+
     def redact_event(self, room_id, event_id, reason=None, txn_id=None, timestamp=None):
         """Perform PUT /rooms/$room_id/redact/$event_id/$txn_id/
 
@@ -621,6 +691,41 @@ def get_text_body(self, text, msgtype="m.text"):
             "body": text
         }
 
+    def get_call_invite_content(self, call_id, sdp, version, lifetime, types="offer"):
+        return{
+            "call_id": call_id,
+            "lifetime": lifetime,
+            "offer": {
+                "spd": sdp,
+                "type": types
+            },
+            "version": version
+        }
+
+    def get_call_answer_content(self, call_id, sdp, lifetime, version, types="answer"):
+        return{
+            "call_id": call_id,
+            "lifetime": lifetime,
+            "answer": {
+                "sdp": sdp,
+                "type": types
+            },
+            "version": version
+        }
+
+    def get_call_candidates_content(self, call_id, candidates, version):
+        return{
+            "call_id": call_id,
+            "candidates": candidates,
+            "version": version
+        }
+
+    def get_call_hangup_content(self, call_id, version):
+        return{
+            "call_id": call_id,
+            "version": version
+        }
+
     def get_emote_body(self, text):
         return {
             "msgtype": "m.emote",
diff --git a/matrix_client/room.py b/matrix_client/room.py
index 20b8ca01..239d0bce 100644
--- a/matrix_client/room.py
+++ b/matrix_client/room.py
@@ -222,6 +222,50 @@ def send_audio(self, url, name, **audioinfo):
         return self.client.api.send_content(self.room_id, url, name, "m.audio",
                                             extra_information=audioinfo)
 
+    def send_call_invite(self, call_id, sdp, version, lifetime):
+        """ Send a call invite event to the room.
+
+        Args:
+            call_id (str): Random call identifier string.
+            sdp (dict): Invite Session Description Protocol dict.
+            version (int): The version of the VoIP specification this message adheres to.
+            lifetime (int): The time in milliseconds that the invite is valid for.
+        """
+        return self.client.api.send_call_invite(self.room_id, call_id,
+                                                sdp, version, lifetime)
+
+    def send_call_answer(self, call_id, sdp, version, lifetime):
+        """ Send a call answer event to the room.
+
+        Args:
+            call_id (str): The call identifier string.
+            sdp (dict): Session Description Protocol dict.
+            version (int): The version of the VoIP specification this messages adheres to.
+            lifetime (int): The time in milliseconds that the answer is valid for.
+        """
+        return self.client.api.send_call_answer(self.room_id, call_id,
+                                                sdp, version, lifetime)
+
+    def send_call_candidates(self, call_id, candidates, version):
+        """ Send a call candidates event to the room.
+
+        Args:
+            call_id (str): The call identifier string.
+            candidates (dict): The candidates to send
+            version (int): The version of the VoIP specification this messages adheres to.
+        """
+        return self.client.api.send_call_candidates(self.room_id, call_id,
+                                                    candidates, version)
+
+    def send_call_hangup(self, call_id, version):
+        """ Send a call hangup event to the room.
+
+        Args:
+            call_id (str): The call identifier string.
+            version (int): The version of the VoIP specification this messages adheres to.
+        """
+        return self.client.api.send_call_hangup(self.room_id, call_id, version)
+
     def redact_message(self, event_id, reason=None):
         """ Redacts the message with specified event_id in the room.
         See https://matrix.org/docs/spec/r0.0.1/client_server.html#id112