diff --git a/Conf.cpp b/Conf.cpp
index a5e3e91..598e5b8 100644
--- a/Conf.cpp
+++ b/Conf.cpp
@@ -146,7 +146,7 @@ m_dmrSlot2TGWhiteList(),
 m_dmrCallHang(10U),
 m_dmrTXHang(4U),
 m_dmrModeHang(10U),
-m_dmrOVCM(true),
+m_dmrOVCM(false),
 m_fusionEnabled(false),
 m_fusionLowDeviation(false),
 m_fusionRemoteGateway(false),
diff --git a/DMRSlot.cpp b/DMRSlot.cpp
index 6e80255..46e637f 100644
--- a/DMRSlot.cpp
+++ b/DMRSlot.cpp
@@ -43,7 +43,7 @@ CDisplay*      CDMRSlot::m_display = NULL;
 bool           CDMRSlot::m_duplex = true;
 CDMRLookup*    CDMRSlot::m_lookup = NULL;
 unsigned int   CDMRSlot::m_hangCount = 3U * 17U;
-bool           CDMRSlot::m_ovcm = true;
+bool           CDMRSlot::m_ovcm = false;
 
 CRSSIInterpolator* CDMRSlot::m_rssiMapper = NULL;