def send(self, channelId, data):
        """
        @summary: Specific send function for channelId
        @param channelId: {integer} Channel use to send
        @param data: {type.type | tuple} message to send
        """
        self._transport.send((self.writeMCSPDUHeader(UInt8(self._sendOpcode)), 
                              per.writeInteger16(self._userId, Channel.MCS_USERCHANNEL_BASE), 
                              per.writeInteger16(channelId), 
                              UInt8(0x70), 
                              per.writeLength(sizeof(data)), data))
def send ( self , channelId , data ) : self . _transport . send ( ( self . writeMCSPDUHeader ( UInt8 ( self . _sendOpcode ) ) , per . writeInteger16 ( self . _userId , Channel . MCS_USERCHANNEL_BASE ) , per . writeInteger16 ( channelId ) , UInt8 ( 0x70 ) , per . writeLength ( sizeof ( data ) ) , data ) )
@summary: Specific send function for channelId
        @param channelId: {integer} Channel use to send
        @param data: {type.type | tuple} message to send