diff --git a/daemon/src/audio/audiorecorder.cpp b/daemon/src/audio/audiorecorder.cpp
index ff29bfe03b6150238cafa48afeb4c1873397d690..5d18859930f5c1b952a50534765bccf77e35177d 100644
--- a/daemon/src/audio/audiorecorder.cpp
+++ b/daemon/src/audio/audiorecorder.cpp
@@ -59,7 +59,7 @@ AudioRecorder::AudioRecorder(AudioRecord  *arec, MainBuffer *mb) : Thread()
 /**
  * Reimplementation of run()
  */
-void AudioRecorder::run(void)
+void AudioRecorder::run()
 {
 
     int bufferLength = 10000;
diff --git a/daemon/src/audio/audiortp/audio_rtp_record_handler.cpp b/daemon/src/audio/audiortp/audio_rtp_record_handler.cpp
index f29196b78801d027d9218f9b3c70ef29cf170a7c..cec3366e4fce78ab19113da5792fdbfa74144416 100644
--- a/daemon/src/audio/audiortp/audio_rtp_record_handler.cpp
+++ b/daemon/src/audio/audiortp/audio_rtp_record_handler.cpp
@@ -104,7 +104,7 @@ void AudioRtpRecordHandler::putDtmfEvent(int digit)
 std::ofstream teststream("test_process_data_encode.raw");
 #endif
 
-int AudioRtpRecordHandler::processDataEncode(void)
+int AudioRtpRecordHandler::processDataEncode()
 {
     SFLDataFormat *micData 			= audioRtpRecord_.decData_;
     unsigned char *micDataEncoded 	= audioRtpRecord_.encodedData_;
diff --git a/daemon/src/audio/audiortp/audio_srtp_session.cpp b/daemon/src/audio/audiortp/audio_srtp_session.cpp
index fee63e9bc5250b44e6bf480480ba5312f4163d11..54e4131fa514554169b92eb599cac0985f99f8e8 100644
--- a/daemon/src/audio/audiortp/audio_srtp_session.cpp
+++ b/daemon/src/audio/audiortp/audio_srtp_session.cpp
@@ -135,7 +135,7 @@ void AudioSrtpSession::setRemoteCryptoInfo(sfl::SdesNegotiator& nego)
     }
 }
 
-void AudioSrtpSession::initializeLocalMasterKey(void)
+void AudioSrtpSession::initializeLocalMasterKey()
 {
     _debug("AudioSrtp: Init local master key");
 
@@ -156,7 +156,7 @@ void AudioSrtpSession::initializeLocalMasterKey(void)
     memcpy(localMasterKey_, random_key, localMasterKeyLength_);
 }
 
-void AudioSrtpSession::initializeLocalMasterSalt(void)
+void AudioSrtpSession::initializeLocalMasterSalt()
 {
     // @TODO key may have different length depending on cipher suite
     localMasterSaltLength_ = sfl::CryptoSuites[localCryptoSuite_].masterSaltLength / 8;
@@ -212,7 +212,7 @@ void AudioSrtpSession::unBase64ConcatenatedKeys(std::string base64keys)
     delete[] output;
 }
 
-void AudioSrtpSession::initializeRemoteCryptoContext(void)
+void AudioSrtpSession::initializeRemoteCryptoContext()
 {
     _debug("AudioSrtp: Initialize remote crypto context");
 
@@ -239,7 +239,7 @@ void AudioSrtpSession::initializeRemoteCryptoContext(void)
 
 }
 
-void AudioSrtpSession::initializeLocalCryptoContext(void)
+void AudioSrtpSession::initializeLocalCryptoContext()
 {
     _debug("AudioSrtp: Initialize local crypto context");
 
diff --git a/daemon/src/audio/audiortp/zrtp_session_callback.cpp b/daemon/src/audio/audiortp/zrtp_session_callback.cpp
index 68f6c9f8657effbba7e0af0b6b1f9aa68c7df704..db487f8f4ad61015ed5058a751051bb5ce6bf4ec 100644
--- a/daemon/src/audio/audiortp/zrtp_session_callback.cpp
+++ b/daemon/src/audio/audiortp/zrtp_session_callback.cpp
@@ -131,7 +131,7 @@ ZrtpSessionCallback::secureOn(std::string cipher)
 }
 
 void
-ZrtpSessionCallback::secureOff(void)
+ZrtpSessionCallback::secureOff()
 {
     _debug("Zrtp: Secure mode is off");
     Manager::instance().getDbusManager()->getCallManager()->secureZrtpOff(_sipcall->getCallId());
diff --git a/daemon/src/audio/audiortp/zrtp_session_callback.h b/daemon/src/audio/audiortp/zrtp_session_callback.h
index e8f33af8563065e04e379a1ab3a3fd10d0af44c3..3992100d999339d8fb9b51db7dcd926da27744a8 100644
--- a/daemon/src/audio/audiortp/zrtp_session_callback.h
+++ b/daemon/src/audio/audiortp/zrtp_session_callback.h
@@ -49,9 +49,9 @@ class ZrtpSessionCallback: public ZrtpUserCallback {
         ZrtpSessionCallback(SIPCall *sipcall);
 
         void secureOn(std::string cipher);
-        void secureOff(void);
+        void secureOff();
         void showSAS(std::string sas, bool verified);
-        void zrtpNotSuppOther(void);
+        void zrtpNotSuppOther();
         void showMessage(GnuZrtpCodes::MessageSeverity sev, int32_t subCode);
         void zrtpNegotiationFailed(GnuZrtpCodes::MessageSeverity severity, int subCode);
         void confirmGoClear();
diff --git a/daemon/src/audio/codecs/alaw.cpp b/daemon/src/audio/codecs/alaw.cpp
index d493ea95201d2a220e5387d1e3d2ceb07586a3ca..77df91008b0b4aad6830191c43372d49d9a45cfb 100644
--- a/daemon/src/audio/codecs/alaw.cpp
+++ b/daemon/src/audio/codecs/alaw.cpp
@@ -40,33 +40,33 @@ class Alaw : public sfl::AudioCodec {
         // 8 PCMA A 8000 1 [RFC3551]
         Alaw(int payload=8)
             : sfl::AudioCodec(payload, "PCMA") {
-            _clockRate = 8000;
-            _frameSize = 160; // samples, 20 ms at 8kHz
-            _channel   = 1;
-            _bitrate = 64;
-            _hasDynamicPayload = false;
+            clockRate_ = 8000;
+            frameSize_ = 160; // samples, 20 ms at 8kHz
+            channel_   = 1;
+            bitrate_ = 64;
+            hasDynamicPayload_ = false;
         }
 
         virtual ~Alaw() {}
 
         virtual int decode(short *dst, unsigned char *src, size_t buf_size) {
-            assert(buf_size == _frameSize / 2 /* compression factor = 2:1 */ * sizeof(SFLDataFormat));
-            unsigned char* end = src+buf_size;
+            assert(buf_size == frameSize_ / 2 /* compression factor = 2:1 */ * sizeof(SFLDataFormat));
+            unsigned char* end = src + buf_size;
 
-            while (src<end)
+            while (src < end)
                 *dst++ = ALawDecode(*src++);
 
-            return _frameSize;
+            return frameSize_;
         }
 
         virtual int encode(unsigned char *dst, short *src, size_t buf_size) {
-            assert(buf_size >= _frameSize / 2 /* compression factor = 2:1 */ * sizeof(SFLDataFormat));
-            uint8* end = dst+_frameSize;
+            assert(buf_size >= frameSize_ / 2 /* compression factor = 2:1 */ * sizeof(SFLDataFormat));
+            uint8* end = dst + frameSize_;
 
-            while (dst<end)
+            while (dst < end)
                 *dst++ = ALawEncode(*src++);
 
-            return _frameSize / 2 /* compression factor = 2:1 */ * sizeof(SFLDataFormat);
+            return frameSize_ / 2 /* compression factor = 2:1 */ * sizeof(SFLDataFormat);
         }
 
 
@@ -80,9 +80,9 @@ class Alaw : public sfl::AudioCodec {
 
             alaw &= 0x7f;
 
-            if (alaw>=0x20) {
+            if (alaw >= 0x20) {
                 linear |= 0x100;  // Put in MSB
-                uint shift = (alaw>>4)-1;
+                uint shift = (alaw >> 4) - 1;
                 linear <<= shift;
             }
 
@@ -97,7 +97,7 @@ class Alaw : public sfl::AudioCodec {
             int p = pcm16;
             uint a;  // u-law value we are forming
 
-            if (p<0) {
+            if (p < 0) {
                 p = ~p;
                 a = 0x00; // sign = 0
             } else {
diff --git a/daemon/src/audio/codecs/audiocodec.cpp b/daemon/src/audio/codecs/audiocodec.cpp
index b88b69e13162b20f864e154cd9887f5842bcf6dd..f9b3bd052eec251477d5c5a1d18813a25afd6df0 100644
--- a/daemon/src/audio/codecs/audiocodec.cpp
+++ b/daemon/src/audio/codecs/audiocodec.cpp
@@ -37,32 +37,27 @@ using std::ptrdiff_t;
 namespace sfl {
 
 AudioCodec::AudioCodec(uint8 payload, const std::string &codecName) :
-    _codecName(codecName), _clockRate(8000), _channel(1), _bitrate(0.0),
-    _hasDynamicPayload(false), _payload(payload)
+    codecName_(codecName), clockRate_(8000), channel_(1), bitrate_(0.0),
+    hasDynamicPayload_(false), payload_(payload)
 {
-    init(payload, _clockRate);
+    init(payload, clockRate_);
 }
 
 AudioCodec::AudioCodec(const AudioCodec& codec) :
-    _codecName(codec._codecName), _clockRate(codec._clockRate), _channel(
-        codec._channel), _bitrate(codec._bitrate),
-    _hasDynamicPayload(false), _payload(codec._payload)
+    codecName_(codec.codecName_), clockRate_(codec.clockRate_), channel_(
+        codec.channel_), bitrate_(codec.bitrate_),
+    hasDynamicPayload_(false), payload_(codec.payload_)
 {
-    init(codec._payload, codec._clockRate);
+    init(codec.payload_, codec.clockRate_);
 }
 
 void AudioCodec::init(uint8 payloadType, uint32 clockRate)
 {
-    _payloadFormat = new ost::DynamicPayloadFormat(payloadType, clockRate);
-
-    _hasDynamicPayload = (_payload >= 96 && _payload <= 127) ? true : false;
+    payloadFormat_ = new ost::DynamicPayloadFormat(payloadType, clockRate);
 
     // If g722 (payload 9), we need to init libccrtp symetric sessions with using
     // dynamic payload format. This way we get control on rtp clockrate.
-
-    if (_payload == 9) {
-        _hasDynamicPayload = true;
-    }
+    hasDynamicPayload_ = ((payload_ >= 96 and payload_ <= 127) or payload_ == 9);
 }
 
 std::string AudioCodec::getMimeType() const
@@ -72,47 +67,47 @@ std::string AudioCodec::getMimeType() const
 
 std::string AudioCodec::getMimeSubtype() const
 {
-    return _codecName;
+    return codecName_;
 }
 
 const ost::PayloadFormat& AudioCodec::getPayloadFormat()
 {
-    return (*_payloadFormat);
+    return *payloadFormat_;
 }
 
-uint8 AudioCodec::getPayloadType(void) const
+uint8 AudioCodec::getPayloadType() const
 {
-    return _payload;
+    return payload_;
 }
 
-bool AudioCodec::hasDynamicPayload(void) const
+bool AudioCodec::hasDynamicPayload() const
 {
-    return _hasDynamicPayload;
+    return hasDynamicPayload_;
 }
 
-uint32 AudioCodec::getClockRate(void) const
+uint32 AudioCodec::getClockRate() const
 {
-    return _clockRate;
+    return clockRate_;
 }
 
-unsigned AudioCodec::getFrameSize(void) const
+unsigned AudioCodec::getFrameSize() const
 {
-    return _frameSize;
+    return frameSize_;
 }
 
-uint8 AudioCodec::getChannel(void) const
+uint8 AudioCodec::getChannel() const
 {
-    return _channel;
+    return channel_;
 }
 
-double AudioCodec::getBitRate(void) const
+double AudioCodec::getBitRate() const
 {
-    return _bitrate;
+    return bitrate_;
 }
 
 AudioCodec::~AudioCodec()
 {
-    delete _payloadFormat;
+    delete payloadFormat_;
 }
 
 } // end namespace sfl
diff --git a/daemon/src/audio/codecs/audiocodec.h b/daemon/src/audio/codecs/audiocodec.h
index 29d2f1b2b27d587672eced94eb0f8c043eda2059..0846c4e3471052851d766ce286ca96d53582d61e 100644
--- a/daemon/src/audio/codecs/audiocodec.h
+++ b/daemon/src/audio/codecs/audiocodec.h
@@ -111,7 +111,7 @@ class AudioCodec : public Codec {
          * @Override
          */
         void setPayloadType(uint8 pt) {
-            _payload = pt;
+            payload_ = pt;
         }
 
         /**
@@ -141,29 +141,29 @@ class AudioCodec : public Codec {
 
     protected:
         /** Holds SDP-compliant codec name */
-        std::string _codecName; // what we put inside sdp
+        std::string codecName_; // what we put inside sdp
 
         /** Clock rate or sample rate of the codec, in Hz */
-        uint32 _clockRate;
+        uint32 clockRate_;
 
         /** Number of channel 1 = mono, 2 = stereo */
-        uint8 _channel;
+        uint8 channel_;
 
         /** codec frame size in samples*/
-        unsigned _frameSize;
+        unsigned frameSize_;
 
         /** Bitrate */
-        double _bitrate;
+        double bitrate_;
 
         /** Bandwidth */
-        double _bandwidth;
+        double bandwidth_;
 
-        bool _hasDynamicPayload;
+        bool hasDynamicPayload_;
 
     private:
-        uint8 _payload;
+        uint8 payload_;
 
-        ost::DynamicPayloadFormat* _payloadFormat;
+        ost::DynamicPayloadFormat* payloadFormat_;
 
         void init(uint8 payloadType, uint32 clockRate);
 };
diff --git a/daemon/src/audio/codecs/celtcodec.cpp b/daemon/src/audio/codecs/celtcodec.cpp
index d858d5c5085d6467af50773aedd7e3ec3c434738..4b975492937a35849834cc4b2c0f4ab659ba51b8 100644
--- a/daemon/src/audio/codecs/celtcodec.cpp
+++ b/daemon/src/audio/codecs/celtcodec.cpp
@@ -37,17 +37,15 @@
 class Celt : public sfl::AudioCodec {
 
     public:
-        Celt(int payload=115)	: sfl::AudioCodec(payload, "celt") {
-
-            _clockRate = 32000;
-            _frameSize = 320;  // fixed frameSize, TODO: support variable size from 64 to 512
-            _channel = 1;
-            _bitrate = 0;
-            _hasDynamicPayload = true;
-
+        Celt(int payload = 115)	: sfl::AudioCodec(payload, "celt") {
+            clockRate_ = 32000;
+            frameSize_ = 320;  // fixed frameSize, TODO: support variable size from 64 to 512
+            channel_ = 1;
+            bitrate_ = 0;
+            hasDynamicPayload_ = true;
             int error = 0;
 
-            _mode = celt_mode_create(_clockRate, _frameSize, &error);
+            mode_ = celt_mode_create(clockRate_, frameSize_, &error);
 
             if (error != CELT_OK) {
                 switch (error) {
@@ -78,72 +76,58 @@ class Celt : public sfl::AudioCodec {
 
             }
 
-            if (_mode == NULL)
+            if (mode_ == NULL)
                 throw std::runtime_error("Celt: Failed to create Celt mode");
 
-            // bytes_per_packet = 1024;
-            // if (bytes_per_packet < 0 || bytes_per_packet > MAX_PACKET)
-            // {
-            //     throw std::runtime_error("bytes per packet must be between 0 and %d");
-            // }
-
-            // celt_mode_info(mode, CELT_GET_FRAME_SIZE, &frame_size);
-            // celt_mode_info(mode, CELT_GET_NB_CHANNELS, &_channel);
-
-            _enc = celt_encoder_create(_mode, _channel, &error);
+            enc_ = celt_encoder_create(mode_, channel_, &error);
+            dec_ = celt_decoder_create(mode_, channel_, &error);
 
-            _dec = celt_decoder_create(_mode, _channel, &error);
-
-            celt_encoder_ctl(_enc, CELT_SET_COMPLEXITY(2));
-            celt_decoder_ctl(_dec, CELT_SET_COMPLEXITY(2));
-
-            celt_encoder_ctl(_enc, CELT_SET_PREDICTION(2));
-            celt_decoder_ctl(_dec, CELT_SET_PREDICTION(2));
+            celt_encoder_ctl(enc_, CELT_SET_COMPLEXITY(2));
+            celt_decoder_ctl(dec_, CELT_SET_COMPLEXITY(2));
 
+            celt_encoder_ctl(enc_, CELT_SET_PREDICTION(2));
+            celt_decoder_ctl(dec_, CELT_SET_PREDICTION(2));
         }
 
         Celt(const Celt&);
         Celt& operator= (const Celt&);
 
         ~Celt() {
-            celt_encoder_destroy(_enc);
-            celt_decoder_destroy(_dec);
-            celt_mode_destroy(_mode);
+            celt_encoder_destroy(enc_);
+            celt_decoder_destroy(dec_);
+            celt_mode_destroy(mode_);
         }
 
         virtual int decode(short *dst, unsigned char *src, size_t buf_size) {
 #ifdef BUILD_CELT_91 // == 91
-            //int err = 0;
-            /*err =*/ celt_decode(_dec, src, buf_size, (celt_int16*) dst, _frameSize);
+            celt_decode(dec_, src, buf_size, (celt_int16*) dst, frameSize_);
 #endif
 #ifdef BUILD_CELT_71
-            //int err = 0; // FIXME: check error code
-            /*err =*/ celt_decode(_dec, src, buf_size, (celt_int16*) dst);
+            celt_decode(dec_, src, buf_size, (celt_int16*) dst);
 #endif
-            return _frameSize;
+            return frameSize_;
         }
 
         virtual int encode(unsigned char *dst, short *src, size_t buf_size) {
             int len = 0;
 #ifdef BUILD_CELT_91// == 91
-            len = celt_encode(_enc, (celt_int16*) src, _frameSize, dst, buf_size);
+            len = celt_encode(enc_, (celt_int16*) src, frameSize_, dst, buf_size);
 #endif
 #ifdef BUILD_CELT_71
-            len = celt_encode(_enc, (celt_int16*) src, (celt_int16 *) src, dst, buf_size);
+            len = celt_encode(enc_, (celt_int16*) src, (celt_int16 *) src, dst, buf_size);
 #endif
             return len;
         }
 
     private:
 
-        CELTMode *_mode;
-
-        CELTEncoder *_enc;
-        CELTDecoder *_dec;
+        CELTMode *mode_;
 
-        celt_int32 _celt_frame_size;
-        celt_int32 skip;
+        CELTEncoder *enc_;
+        CELTDecoder *dec_;
 
+        celt_int32 celt_frame_size_;
+        celt_int32 skip_;
 };
 
 // the class factories
diff --git a/daemon/src/audio/codecs/g722.cpp b/daemon/src/audio/codecs/g722.cpp
index 8c19a19c62e072b3b33ee2ef91f51b344c8fc61e..9f8cc4b09974104d7755dc8a132a1b55dac7df66 100644
--- a/daemon/src/audio/codecs/g722.cpp
+++ b/daemon/src/audio/codecs/g722.cpp
@@ -51,11 +51,11 @@ class G722 : public sfl::AudioCodec {
 
         G722(int payload=9)
             : sfl::AudioCodec(payload, "G722") {
-            _clockRate = 16000;
-            _frameSize = 320; // samples, 20 ms at 16kHz
-            _channel   = 1;
-            _bitrate = 64;
-            _hasDynamicPayload = false;
+            clockRate_ = 16000;
+            frameSize_ = 320; // samples, 20 ms at 16kHz
+            channel_   = 1;
+            bitrate_ = 64;
+            hasDynamicPayload_ = false;
 
 
             decode_s = new g722_decode_state_t;
@@ -72,19 +72,18 @@ class G722 : public sfl::AudioCodec {
         }
 
         virtual int decode(short *dst, unsigned char *src, size_t buf_size) {
-            assert(buf_size == _frameSize / sizeof(SFLDataFormat) * encode_s->bits_per_sample / 8);
+            assert(buf_size == frameSize_ / sizeof(SFLDataFormat) * encode_s->bits_per_sample / 8);
             return g722_decode((int16_t*) dst, (const uint8_t*) src, buf_size);
         }
 
         virtual int encode(unsigned char *dst, short *src, size_t buf_size) {
-            int out = g722_encode((uint8_t*) dst, (const int16_t*) src, _frameSize);
+            int out = g722_encode((uint8_t*) dst, (const int16_t*) src, frameSize_);
             assert((size_t)out <= buf_size);
             return out;
         }
 
 
         void g722_encode_init(void) {
-
             encode_s->itu_test_mode = FALSE;
 
             // 8 => 64 kbps;  7 => 56 kbps;  6 => 48 kbps
diff --git a/daemon/src/audio/codecs/g722.h b/daemon/src/audio/codecs/g722.h
index 8079d9a5e1b94a8da01c4cbd935717d51f8afdb9..cb589e54c801af74b04f7ed4c236ede61839ee0c 100644
--- a/daemon/src/audio/codecs/g722.h
+++ b/daemon/src/audio/codecs/g722.h
@@ -136,11 +136,11 @@ typedef struct {
 extern "C" {
 #endif
 
-    void g722_encode_init(void);
+    void g722_encode_init();
     int g722_encode_release();
     int g722_encode(uint8_t g722_data[], const int16_t amp[], int len);
 
-    void g722_decode_init(void);
+    void g722_decode_init();
     int g722_decode_release();
     int g722_decode(int16_t amp[], const uint8_t g722_data[], int len);
 
diff --git a/daemon/src/audio/codecs/gsmcodec.cpp b/daemon/src/audio/codecs/gsmcodec.cpp
index d76e48b85fdadb04af3a81c199fd6cdfb9d7c394..c0ace7bb24cdd748439f9d9cb5167e72b9519c67 100644
--- a/daemon/src/audio/codecs/gsmcodec.cpp
+++ b/daemon/src/audio/codecs/gsmcodec.cpp
@@ -46,17 +46,17 @@ class Gsm : public sfl::AudioCodec {
 
     public:
         // _payload should be 3
-        Gsm(int payload=3) : sfl::AudioCodec(payload, "GSM"), _decode_gsmhandle(NULL), _encode_gsmhandle(NULL) {
-            _clockRate = 8000;
-            _frameSize = 160; // samples, 20 ms at 8kHz
-            _channel = 1;
-            _bitrate = 13.3;
-            _hasDynamicPayload = false;
-
-            if (!(_decode_gsmhandle = gsm_create()))
+        Gsm(int payload=3) : sfl::AudioCodec(payload, "GSM"), decode_gsmhandle_(NULL), encode_gsmhandle_(NULL) {
+            clockRate_ = 8000;
+            frameSize_ = 160; // samples, 20 ms at 8kHz
+            channel_ = 1;
+            bitrate_ = 13.3;
+            hasDynamicPayload_ = false;
+
+            if (!(decode_gsmhandle_ = gsm_create()))
                 throw std::runtime_error("ERROR: decode_gsm_create\n");
 
-            if (!(_encode_gsmhandle = gsm_create()))
+            if (!(encode_gsmhandle_ = gsm_create()))
                 throw std::runtime_error("ERROR: encode_gsm_create\n");
         }
 
@@ -65,30 +65,28 @@ class Gsm : public sfl::AudioCodec {
         Gsm& operator= (const Gsm&);
 
         virtual ~Gsm(void) {
-            gsm_destroy(_decode_gsmhandle);
-            gsm_destroy(_encode_gsmhandle);
+            gsm_destroy(decode_gsmhandle_);
+            gsm_destroy(encode_gsmhandle_);
         }
 
         virtual int	decode(short * dst, unsigned char * src, size_t buf_size) {
             assert(buf_size == 33);
-            (void) buf_size;
 
-            if (gsm_decode(_decode_gsmhandle, (gsm_byte*) src, (gsm_signal*) dst) < 0)
+            if (gsm_decode(decode_gsmhandle_, (gsm_byte*) src, (gsm_signal*) dst) < 0)
                 throw std::runtime_error("ERROR: gsm_decode\n");
 
-            return _frameSize;
+            return frameSize_;
         }
 
         virtual int	encode(unsigned char * dst, short * src, size_t buf_size) {
-            (void) buf_size;
             assert(buf_size >= 33);
-            gsm_encode(_encode_gsmhandle, (gsm_signal*) src, (gsm_byte*) dst);
+            gsm_encode(encode_gsmhandle_, (gsm_signal*) src, (gsm_byte*) dst);
             return 33;
         }
 
     private:
-        gsm _decode_gsmhandle;
-        gsm _encode_gsmhandle;
+        gsm decode_gsmhandle_;
+        gsm encode_gsmhandle_;
 };
 
 extern "C" sfl::Codec* create()
diff --git a/daemon/src/audio/codecs/speexcodec.h b/daemon/src/audio/codecs/speexcodec.h
index d9783dc65e1a472918f4c0b9a9857cd444294fd9..af257234d36407d3913888283f9bdecbeaf4f4d8 100644
--- a/daemon/src/audio/codecs/speexcodec.h
+++ b/daemon/src/audio/codecs/speexcodec.h
@@ -71,22 +71,22 @@ class Speex : public sfl::AudioCodec {
                    112 == PAYLOAD_CODEC_SPEEX_32000);
             int type = payload - 110;
 
-            _clockRate = clockRate[type];
-            _frameSize = frameSize[type];
-            _channel = 1;
-            _bitrate = bitRate[type];
-            _hasDynamicPayload = dynamicPayload[type];
+            clockRate_ = clockRate[type];
+            frameSize_ = frameSize[type];
+            channel_ = 1;
+            bitrate_ = bitRate[type];
+            hasDynamicPayload_ = dynamicPayload[type];
 
             // Init the decoder struct
-            speex_bits_init(&_speex_dec_bits);
-            _speex_dec_state = speex_decoder_init(speexMode[type]);
+            speex_bits_init(&speex_dec_bits_);
+            speex_dec_state_ = speex_decoder_init(speexMode[type]);
 
             // Init the encoder struct
-            speex_bits_init(&_speex_enc_bits);
-            _speex_enc_state = speex_encoder_init(speexMode[type]);
+            speex_bits_init(&speex_enc_bits_);
+            speex_enc_state_ = speex_encoder_init(speexMode[type]);
 
-            speex_encoder_ctl(_speex_enc_state,SPEEX_SET_SAMPLING_RATE,&_clockRate);
-            speex_decoder_ctl(_speex_dec_state, SPEEX_GET_FRAME_SIZE, &_speex_frame_size);
+            speex_encoder_ctl(speex_enc_state_, SPEEX_SET_SAMPLING_RATE, &clockRate_);
+            speex_decoder_ctl(speex_dec_state_, SPEEX_GET_FRAME_SIZE, &speex_frame_size_);
         }
 
         Speex(const Speex&);
@@ -94,32 +94,32 @@ class Speex : public sfl::AudioCodec {
 
         ~Speex() {
             // Destroy the decoder struct
-            speex_bits_destroy(&_speex_dec_bits);
-            speex_decoder_destroy(_speex_dec_state);
-            _speex_dec_state = 0;
+            speex_bits_destroy(&speex_dec_bits_);
+            speex_decoder_destroy(speex_dec_state_);
+            speex_dec_state_ = 0;
 
             // Destroy the encoder struct
-            speex_bits_destroy(&_speex_enc_bits);
-            speex_encoder_destroy(_speex_enc_state);
-            _speex_enc_state = 0;
+            speex_bits_destroy(&speex_enc_bits_);
+            speex_encoder_destroy(speex_enc_state_);
+            speex_enc_state_ = 0;
         }
 
         virtual int decode(short *dst, unsigned char *src, size_t buf_size) {
-            speex_bits_read_from(&_speex_dec_bits, (char*) src, buf_size);
-            speex_decode_int(_speex_dec_state, &_speex_dec_bits, dst);
-            return _frameSize;
+            speex_bits_read_from(&speex_dec_bits_, (char*) src, buf_size);
+            speex_decode_int(speex_dec_state_, &speex_dec_bits_, dst);
+            return frameSize_;
         }
 
         virtual int encode(unsigned char *dst, short *src, size_t buf_size) {
-            speex_bits_reset(&_speex_enc_bits);
-            speex_encode_int(_speex_enc_state, src, &_speex_enc_bits);
-            return speex_bits_write(&_speex_enc_bits, (char*) dst, buf_size);
+            speex_bits_reset(&speex_enc_bits_);
+            speex_encode_int(speex_enc_state_, src, &speex_enc_bits_);
+            return speex_bits_write(&speex_enc_bits_, (char*) dst, buf_size);
         }
 
     private:
-        SpeexBits  _speex_dec_bits;
-        SpeexBits  _speex_enc_bits;
-        void *_speex_dec_state;
-        void *_speex_enc_state;
-        int _speex_frame_size;
+        SpeexBits  speex_dec_bits_;
+        SpeexBits  speex_enc_bits_;
+        void *speex_dec_state_;
+        void *speex_enc_state_;
+        int speex_frame_size_;
 };
diff --git a/daemon/src/audio/codecs/ulaw.cpp b/daemon/src/audio/codecs/ulaw.cpp
index f68370805b604bb8b85a11df2334c06d103f294a..5b6e7400c900e28d8ba4d095ded161a96e5ff0c1 100644
--- a/daemon/src/audio/codecs/ulaw.cpp
+++ b/daemon/src/audio/codecs/ulaw.cpp
@@ -40,31 +40,31 @@ class Ulaw : public sfl::AudioCodec {
         // 0 PCMU A 8000 1 [RFC3551]
         Ulaw(int payload=0)
             : sfl::AudioCodec(payload, "PCMU") {
-            _clockRate = 8000;
-            _frameSize = 160; // samples, 20 ms at 8kHz
-            _channel   = 1;
-            _bitrate =  64;
-            _hasDynamicPayload = false;
+            clockRate_ = 8000;
+            frameSize_ = 160; // samples, 20 ms at 8kHz
+            channel_   = 1;
+            bitrate_ =  64;
+            hasDynamicPayload_ = false;
         }
 
         virtual int decode(short *dst, unsigned char *src, size_t buf_size) {
-            assert(buf_size == _frameSize / 2 /* compression factor = 2:1 */ * sizeof(SFLDataFormat));
+            assert(buf_size == frameSize_ / 2 /* compression factor = 2:1 */ * sizeof(SFLDataFormat));
             unsigned char* end = src+buf_size;
 
             while (src<end)
                 *dst++ = ULawDecode(*src++);
 
-            return _frameSize;
+            return frameSize_;
         }
 
         virtual int encode(unsigned char *dst, short *src, size_t buf_size) {
-            assert(buf_size >= _frameSize / 2 /* compression factor = 2:1 */ * sizeof(SFLDataFormat));
-            uint8* end = dst+_frameSize;
+            assert(buf_size >= frameSize_ / 2 /* compression factor = 2:1 */ * sizeof(SFLDataFormat));
+            uint8* end = dst + frameSize_;
 
             while (dst<end)
                 *dst++ = ULawEncode(*src++);
 
-            return _frameSize / 2 /* compression factor = 2:1 */ * sizeof(SFLDataFormat);;
+            return frameSize_ / 2 /* compression factor = 2:1 */ * sizeof(SFLDataFormat);;
         }
 
         int ULawDecode(uint8 ulaw) {
diff --git a/daemon/src/audio/samplerateconverter.cpp b/daemon/src/audio/samplerateconverter.cpp
index 4975d7091dadb4caee6ee5cbd212955065b960e6..4aa240272957b62c09ddf1a058127213ede5f5ac 100644
--- a/daemon/src/audio/samplerateconverter.cpp
+++ b/daemon/src/audio/samplerateconverter.cpp
@@ -43,7 +43,7 @@ SamplerateConverter::SamplerateConverter(int freq) : _maxFreq(freq)
     _floatBufferOut = new float[_samples];
 }
 
-SamplerateConverter::~SamplerateConverter(void)
+SamplerateConverter::~SamplerateConverter()
 {
     delete [] _floatBufferIn;
     delete [] _floatBufferOut;
diff --git a/daemon/src/history/historymanager.cpp b/daemon/src/history/historymanager.cpp
index 8989f3dc4f5d47c7c23d45525c128f2a3f1f345e..630f0006705830b2f00cb1388afb0ec5af8814c6 100644
--- a/daemon/src/history/historymanager.cpp
+++ b/daemon/src/history/historymanager.cpp
@@ -125,17 +125,15 @@ bool HistoryManager::save_history_to_file(Conf::ConfigTree *history_list)
     return history_list->saveConfigTree(history_path_.data());
 }
 
-
 int HistoryManager::save_history_items_map(Conf::ConfigTree *history_list)
 {
     int items_saved = 0;
     for (HistoryItemMap::iterator iter = history_items_.begin(); iter != history_items_.end(); ++iter) {
         HistoryItem *item = *iter;
 
-        if (item) {
-            if (item->save(&history_list))
-                ++items_saved;
-        } else 
+        if (item and item->save(&history_list))
+            ++items_saved;
+        else
             _debug("can't save NULL history item\n");
     }