diff --git a/modem/Modem.cpp b/modem/Modem.cpp
index cee3b2cb..d58d7997 100644
--- a/modem/Modem.cpp
+++ b/modem/Modem.cpp
@@ -1328,29 +1328,29 @@ bool Modem::writeSymbolAdjust()
 void Modem::printDebug()
 {
     if (m_buffer[2U] == CMD_DEBUG1) {
-        LogMessage(LOG_MODEM, "M: %.*s", m_length - 3U, m_buffer + 3U);
+        LogDebug(LOG_MODEM, "M: %.*s", m_length - 3U, m_buffer + 3U);
     }
     else if (m_buffer[2U] == CMD_DEBUG2) {
         short val1 = (m_buffer[m_length - 2U] << 8) | m_buffer[m_length - 1U];
-        LogMessage(LOG_MODEM, "M: %.*s %d", m_length - 5U, m_buffer + 3U, val1);
+        LogDebug(LOG_MODEM, "M: %.*s %d", m_length - 5U, m_buffer + 3U, val1);
     }
     else if (m_buffer[2U] == CMD_DEBUG3) {
         short val1 = (m_buffer[m_length - 4U] << 8) | m_buffer[m_length - 3U];
         short val2 = (m_buffer[m_length - 2U] << 8) | m_buffer[m_length - 1U];
-        LogMessage(LOG_MODEM, "M: %.*s %d %d", m_length - 7U, m_buffer + 3U, val1, val2);
+        LogDebug(LOG_MODEM, "M: %.*s %d %d", m_length - 7U, m_buffer + 3U, val1, val2);
     }
     else if (m_buffer[2U] == CMD_DEBUG4) {
         short val1 = (m_buffer[m_length - 6U] << 8) | m_buffer[m_length - 5U];
         short val2 = (m_buffer[m_length - 4U] << 8) | m_buffer[m_length - 3U];
         short val3 = (m_buffer[m_length - 2U] << 8) | m_buffer[m_length - 1U];
-        LogMessage(LOG_MODEM, "M: %.*s %d %d %d", m_length - 9U, m_buffer + 3U, val1, val2, val3);
+        LogDebug(LOG_MODEM, "M: %.*s %d %d %d", m_length - 9U, m_buffer + 3U, val1, val2, val3);
     }
     else if (m_buffer[2U] == CMD_DEBUG5) {
         short val1 = (m_buffer[m_length - 8U] << 8) | m_buffer[m_length - 7U];
         short val2 = (m_buffer[m_length - 6U] << 8) | m_buffer[m_length - 5U];
         short val3 = (m_buffer[m_length - 4U] << 8) | m_buffer[m_length - 3U];
         short val4 = (m_buffer[m_length - 2U] << 8) | m_buffer[m_length - 1U];
-        LogMessage(LOG_MODEM, "M: %.*s %d %d %d %d", m_length - 11U, m_buffer + 3U, val1, val2, val3, val4);
+        LogDebug(LOG_MODEM, "M: %.*s %d %d %d %d", m_length - 11U, m_buffer + 3U, val1, val2, val3, val4);
     }
 }
 
diff --git a/p25/TrunkPacket.cpp b/p25/TrunkPacket.cpp
index 326f1686..0513e8a2 100644
--- a/p25/TrunkPacket.cpp
+++ b/p25/TrunkPacket.cpp
@@ -1517,35 +1517,6 @@ void TrunkPacket::writeRF_TDULC(uint8_t duid, bool noNetwork)
     }
 }
 
-/// <summary>
-/// Helper to write a P25 TDU w/ link control channel grant packet.
-/// </summary>
-/// <param name="grp"></param>
-/// <param name="srcId"></param>
-/// <param name="dstId"></param>
-void TrunkPacket::writeRF_TDULC_ChanGrant(bool grp, uint32_t srcId, uint32_t dstId)
-{
-    m_p25->writeRF_TDU(true);
-    m_p25->m_voice->m_lastDUID = P25_DUID_TDU;
-
-    if ((srcId != 0U) && (dstId != 0U)) {
-        for (uint32_t i = 0; i < 4; i++) {
-            m_rfTDULC.setSrcId(srcId);
-            m_rfTDULC.setDstId(dstId);
-            m_rfTDULC.setEmergency(false);
-
-            if (grp) {
-                m_rfTDULC.setLCO(LC_GROUP);
-                writeRF_TDULC(P25_DUID_TDULC, true);
-            }
-            else {
-                m_rfTDULC.setLCO(LC_PRIVATE);
-                writeRF_TDULC(P25_DUID_TDULC, true);
-            }
-        }
-    }
-}
-
 /// <summary>
 /// Helper to write a P25 TDU w/ link control channel release packet.
 /// </summary>
diff --git a/p25/TrunkPacket.h b/p25/TrunkPacket.h
index 41c5f350..5a325b69 100644
--- a/p25/TrunkPacket.h
+++ b/p25/TrunkPacket.h
@@ -202,8 +202,6 @@ namespace p25
 
         /// <summary>Helper to write a P25 TDU w/ link control packet.</summary>
         void writeRF_TDULC(uint8_t duid, bool noNetwork);
-        /// <summary>Helper to write a P25 TDU w/ link control channel grant packet.</summary>
-        void writeRF_TDULC_ChanGrant(bool grp, uint32_t srcId, uint32_t dstId);
         /// <summary>Helper to write a P25 TDU w/ link control channel release packet.</summary>
         void writeRF_TDULC_ChanRelease(bool grp, uint32_t srcId, uint32_t dstId);
 
diff --git a/p25/VoicePacket.cpp b/p25/VoicePacket.cpp
index 516d2b7d..de864c3b 100644
--- a/p25/VoicePacket.cpp
+++ b/p25/VoicePacket.cpp
@@ -162,6 +162,8 @@ bool VoicePacket::process(uint8_t* data, uint32_t len)
                 m_p25->writeRF_TDU(true);
             }
 
+            m_p25->writeRF_Preamble();
+
             m_p25->m_rfTGHang.start();
             m_p25->m_rfLastDstId = m_rfLC.getDstId();
 
@@ -332,8 +334,6 @@ bool VoicePacket::process(uint8_t* data, uint32_t len)
                 m_p25->m_trunk->writeRF_TSDU_Grant(m_rfLC.getGroup(), true, false);
             }
 
-            m_p25->m_trunk->writeRF_TDULC_ChanGrant(m_rfLC.getGroup(), srcId, dstId);
-
             // perform lost/corrupt HDU checking
             if (m_rfLastHDU.getAlgId() != P25_ALGO_UNENCRYPT && m_rfLastHDU.getKId() != 0) {
                 if ((m_rfLC.getAlgId() == P25_ALGO_UNENCRYPT && m_rfLC.getAlgId() != m_rfLastHDU.getAlgId()) &&
@@ -354,8 +354,6 @@ bool VoicePacket::process(uint8_t* data, uint32_t len)
 
             m_hadVoice = true;
 
-            m_p25->writeRF_Preamble();
-
             m_p25->m_rfState = RS_RF_AUDIO;
 
             m_p25->m_rfTGHang.start();
@@ -1130,8 +1128,6 @@ void VoicePacket::writeNet_HDU(const lc::LC& control, const data::LowSpeedData&
         m_p25->m_trunk->writeRF_TSDU_Grant(m_rfLC.getGroup(), true, true);
     }
 
-    m_p25->m_trunk->writeRF_TDULC_ChanGrant(group, srcId, dstId);
-
     if (m_verbose) {
         LogMessage(LOG_NET, P25_HDU_STR ", dstId = %u, algo = $%02X, kid = $%04X", m_netLC.getDstId(), m_netLC.getAlgId(), m_netLC.getKId());
     }