diff --git a/Conf.cpp b/Conf.cpp
index 2e0b5c0..ca7bbfd 100644
--- a/Conf.cpp
+++ b/Conf.cpp
@@ -101,6 +101,7 @@ m_dstarModule("C"),
 m_dstarSelfOnly(false),
 m_dstarBlackList(),
 m_dstarAckReply(true),
+m_dstarAckTime(1000U),
 m_dstarErrorReply(true),
 m_dmrEnabled(false),
 m_dmrBeacons(false),
@@ -376,6 +377,8 @@ bool CConf::read()
 			}
 		} else if (::strcmp(key, "AckReply") == 0)
 			m_dstarAckReply = ::atoi(value) == 1;
+		else if (::strcmp(key, "AckTime") == 0)
+			m_dstarAckTime = (unsigned int)::atoi(value);
 		else if (::strcmp(key, "ErrorReply") == 0)
 			m_dstarErrorReply = ::atoi(value) == 1;
 	} else if (section == SECTION_DMR) {
@@ -813,6 +816,11 @@ bool CConf::getDStarAckReply() const
 	return m_dstarAckReply;
 }
 
+unsigned int CConf::getDStarAckTime() const
+{
+	return m_dstarAckTime;
+}
+
 bool CConf::getDStarErrorReply() const
 {
 	return m_dstarErrorReply;
diff --git a/Conf.h b/Conf.h
index 53baaf5..5f3fcc6 100644
--- a/Conf.h
+++ b/Conf.h
@@ -92,6 +92,7 @@ public:
   bool         getDStarSelfOnly() const;
   std::vector<std::string> getDStarBlackList() const;
   bool         getDStarAckReply() const;
+  unsigned int getDStarAckTime() const;
   bool         getDStarErrorReply() const;
 
   // The DMR section
@@ -246,6 +247,7 @@ private:
   bool         m_dstarSelfOnly;
   std::vector<std::string> m_dstarBlackList;
   bool         m_dstarAckReply;
+  unsigned int m_dstarAckTime;
   bool         m_dstarErrorReply;
 
   bool         m_dmrEnabled;
diff --git a/DStarControl.cpp b/DStarControl.cpp
index fa73a7a..61e6ee7 100644
--- a/DStarControl.cpp
+++ b/DStarControl.cpp
@@ -36,7 +36,7 @@ bool CallsignCompare(const std::string& arg, const unsigned char* my)
 
 // #define	DUMP_DSTAR
 
-CDStarControl::CDStarControl(const std::string& callsign, const std::string& module, bool selfOnly, bool ackReply, bool errorReply, const std::vector<std::string>& blackList, CDStarNetwork* network, CDisplay* display, unsigned int timeout, bool duplex, CRSSIInterpolator* rssiMapper) :
+CDStarControl::CDStarControl(const std::string& callsign, const std::string& module, bool selfOnly, bool ackReply, unsigned int ackTime, bool errorReply, const std::vector<std::string>& blackList, CDStarNetwork* network, CDisplay* display, unsigned int timeout, bool duplex, CRSSIInterpolator* rssiMapper) :
 m_callsign(NULL),
 m_gateway(NULL),
 m_selfOnly(selfOnly),
@@ -59,7 +59,7 @@ m_networkWatchdog(1000U, 0U, 1500U),
 m_rfTimeoutTimer(1000U, timeout),
 m_netTimeoutTimer(1000U, timeout),
 m_packetTimer(1000U, 0U, 300U),
-m_ackTimer(1000U, 0U, 750U),
+m_ackTimer(ackTime, 0U, 750U),
 m_errTimer(1000U, 0U, 750U),
 m_interval(),
 m_elapsed(),
diff --git a/DStarControl.h b/DStarControl.h
index ddc67bd..6f93336 100644
--- a/DStarControl.h
+++ b/DStarControl.h
@@ -37,7 +37,7 @@
 
 class CDStarControl {
 public:
-	CDStarControl(const std::string& callsign, const std::string& module, bool selfOnly, bool ackReply, bool errorReply, const std::vector<std::string>& blackList, CDStarNetwork* network, CDisplay* display, unsigned int timeout, bool duplex, CRSSIInterpolator* rssiMapper);
+	CDStarControl(const std::string& callsign, const std::string& module, bool selfOnly, bool ackReply, unsigned int ackTime, bool errorReply, const std::vector<std::string>& blackList, CDStarNetwork* network, CDisplay* display, unsigned int timeout, bool duplex, CRSSIInterpolator* rssiMapper);
 	~CDStarControl();
 
 	bool writeModem(unsigned char* data, unsigned int len);
diff --git a/MMDVM.ini b/MMDVM.ini
index eefe240..d2c8f08 100644
--- a/MMDVM.ini
+++ b/MMDVM.ini
@@ -64,6 +64,7 @@ Enable=1
 Module=C
 SelfOnly=0
 AckReply=1
+AckTime=1000
 ErrorReply=1
 
 [DMR]
diff --git a/MMDVMHost.cpp b/MMDVMHost.cpp
index 1046ffc..2788a13 100644
--- a/MMDVMHost.cpp
+++ b/MMDVMHost.cpp
@@ -335,22 +335,24 @@ int CMMDVMHost::run()
 
 	CDStarControl* dstar = NULL;
 	if (m_dstarEnabled) {
-		std::string module = m_conf.getDStarModule();
-		bool selfOnly      = m_conf.getDStarSelfOnly();
+		std::string module                 = m_conf.getDStarModule();
+		bool selfOnly                      = m_conf.getDStarSelfOnly();
 		std::vector<std::string> blackList = m_conf.getDStarBlackList();
-		bool ackReply      = m_conf.getDStarAckReply();
-		bool errorReply    = m_conf.getDStarErrorReply();
+		bool ackReply                      = m_conf.getDStarAckReply();
+		unsigned int ackTime               = m_conf.getDStarAckTime();
+		bool errorReply                    = m_conf.getDStarErrorReply();
 
 		LogInfo("D-Star Parameters");
 		LogInfo("    Module: %s", module.c_str());
 		LogInfo("    Self Only: %s", selfOnly ? "yes" : "no");
 		LogInfo("    Ack Reply: %s", ackReply ? "yes" : "no");
+		LogInfo("    Ack Time: %ums", ackTime);
 		LogInfo("    Error Reply: %s", errorReply ? "yes" : "no");
 
 		if (blackList.size() > 0U)
 			LogInfo("    Black List: %u", blackList.size());
 
-		dstar = new CDStarControl(m_callsign, module, selfOnly, ackReply, errorReply, blackList, m_dstarNetwork, m_display, m_timeout, m_duplex, rssi);
+		dstar = new CDStarControl(m_callsign, module, selfOnly, ackReply, ackTime, errorReply, blackList, m_dstarNetwork, m_display, m_timeout, m_duplex, rssi);
 	}
 
 	CDMRControl* dmr = NULL;