diff --git a/src/dmr/Control.cpp b/src/dmr/Control.cpp
index 1ac1d5a2..57e39023 100644
--- a/src/dmr/Control.cpp
+++ b/src/dmr/Control.cpp
@@ -413,6 +413,26 @@ void Control::permittedTG(uint32_t dstId, uint8_t slot)
     }
 }
 
+/// <summary>
+/// Grants a TGID on a non-authoritative host.
+/// </summary>
+/// <param name="dstId"></param>
+/// <paran name="slot"></param>
+void Control::grantTG(uint32_t srcId, uint32_t dstId, uint8_t slot, bool grp)
+{
+    switch (slot) {
+    case 1U:
+        m_slot1->grantTG(srcId, dstId, grp);
+        break;
+    case 2U:
+        m_slot2->grantTG(srcId, dstId, grp);
+        break;
+    default:
+        LogError(LOG_DMR, "DMR, invalid slot, slotNo = %u", slot);
+        break;
+    }
+}
+
 /// <summary>
 /// Releases a granted TG.
 /// </summary>
diff --git a/src/dmr/Control.h b/src/dmr/Control.h
index 063d5ff3..f9e6a417 100644
--- a/src/dmr/Control.h
+++ b/src/dmr/Control.h
@@ -95,7 +95,8 @@ namespace dmr
         void setSupervisor(bool supervisor);
         /// <summary>Permits a TGID on a non-authoritative host.</summary>
         void permittedTG(uint32_t dstId, uint8_t slot);
-
+        /// <summary>Grants a TGID on a non-authoritative host.</summary>
+        void grantTG(uint32_t srcId, uint32_t dstId, uint8_t slot, bool grp);
         /// <summary>Releases a granted TG.</summary>
         void releaseGrantTG(uint32_t dstId, uint8_t slot);
         /// <summary>Touchs a granted TG to keep a channel grant alive.</summary>
diff --git a/src/dmr/Slot.cpp b/src/dmr/Slot.cpp
index fc03ba65..55c3c1f9 100644
--- a/src/dmr/Slot.cpp
+++ b/src/dmr/Slot.cpp
@@ -627,6 +627,25 @@ void Slot::permittedTG(uint32_t dstId)
     m_permittedDstId = dstId;
 }
 
+/// <summary>
+/// Grants a TGID on a non-authoritative host.
+/// </summary>
+/// <param name="srcId"></param>
+/// <param name="dstId"></param>
+/// <param name="grp"></param>
+void Slot::grantTG(uint32_t srcId, uint32_t dstId, bool grp)
+{
+    if (!m_control) {
+        return;
+    }
+
+    if (m_verbose) {
+        LogMessage(LOG_DMR, "DMR Slot %u, network TG grant demand, srcId = %u, dstId = %u", m_slotNo, srcId, dstId);
+    }
+
+    m_control->writeRF_CSBK_Grant(srcId, dstId, 4U, grp);
+}
+
 /// <summary>
 /// Releases a granted TG.
 /// </summary>
diff --git a/src/dmr/Slot.h b/src/dmr/Slot.h
index 4d980f1e..1cf2e825 100644
--- a/src/dmr/Slot.h
+++ b/src/dmr/Slot.h
@@ -96,7 +96,8 @@ namespace dmr
 
         /// <summary>Permits a TGID on a non-authoritative host.</summary>
         void permittedTG(uint32_t dstId);
-
+        /// <summary>Grants a TGID on a non-authoritative host.</summary>
+        void grantTG(uint32_t srcId, uint32_t dstId, bool grp);
         /// <summary>Releases a granted TG.</summary>
         void releaseGrantTG(uint32_t dstId);
         /// <summary>Touchs a granted TG to keep a channel grant alive.</summary>
diff --git a/src/network/RESTAPI.cpp b/src/network/RESTAPI.cpp
index 268f046f..a4117773 100644
--- a/src/network/RESTAPI.cpp
+++ b/src/network/RESTAPI.cpp
@@ -1045,13 +1045,24 @@ void RESTAPI::restAPI_PutGrantTG(const HTTPPayload& request, HTTPPayload& reply,
         return;
     }
 
-    // validate unit-to-unit is a integer within the JSON blob
-    if (!req["unitToUnit"].is<bool>()) {
-        errorPayload(reply, "unit-to-unit was not a valid boolean");
+    // validate source ID is a integer within the JSON blob
+    if (!req["srcId"].is<int>()) {
+        errorPayload(reply, "source ID was not a valid integer");
         return;
     }
 
-    //bool unitToUnit = req["unitToUnit"].get<bool>();
+    uint32_t srcId = req["srcId"].get<uint32_t>();
+
+    if (srcId == 0U) {
+        errorPayload(reply, "soruce ID is an illegal TGID");
+        return;
+    }
+
+    // validate unit-to-unit is a integer within the JSON blob
+    bool unitToUnit = false;
+    if (req["unitToUnit"].is<bool>()) {
+        unitToUnit = req["unitToUnit"].get<bool>();
+    }
 
     switch (state) {
     case STATE_DMR:
@@ -1071,8 +1082,7 @@ void RESTAPI::restAPI_PutGrantTG(const HTTPPayload& request, HTTPPayload& reply,
         }
 
         if (m_dmr != nullptr) {
-            // TODO TODO
-            //m_dmr->grantTG(dstId, slot, unitToUnit);
+            m_dmr->grantTG(srcId, dstId, slot, !unitToUnit);
         }
         else {
             errorPayload(reply, "DMR mode is not enabled", HTTPPayload::SERVICE_UNAVAILABLE);
@@ -1088,8 +1098,7 @@ void RESTAPI::restAPI_PutGrantTG(const HTTPPayload& request, HTTPPayload& reply,
 #if defined(ENABLE_P25)
     {
         if (m_p25 != nullptr) {
-            // TODO TODO
-            //m_p25->grantTG(dstId, unitToUnit);
+            m_p25->grantTG(srcId, dstId, !unitToUnit);
         }
         else {
             errorPayload(reply, "P25 mode is not enabled", HTTPPayload::SERVICE_UNAVAILABLE);
@@ -1105,8 +1114,7 @@ void RESTAPI::restAPI_PutGrantTG(const HTTPPayload& request, HTTPPayload& reply,
 #if defined(ENABLE_NXDN)
     {
         if (m_nxdn != nullptr) {
-            // TODO TODO
-            //m_nxdn->grantTG(dstId, unitToUnit);
+            m_nxdn->grantTG(srcId, dstId, !unitToUnit);
         }
         else {
             errorPayload(reply, "NXDN mode is not enabled", HTTPPayload::SERVICE_UNAVAILABLE);
diff --git a/src/nxdn/Control.cpp b/src/nxdn/Control.cpp
index d08a3ee6..a83756fa 100644
--- a/src/nxdn/Control.cpp
+++ b/src/nxdn/Control.cpp
@@ -691,12 +691,31 @@ void Control::permittedTG(uint32_t dstId)
     }
 
     if (m_verbose) {
-        LogMessage(LOG_P25, "non-authoritative TG permit, dstId = %u", dstId);
+        LogMessage(LOG_NXDN, "non-authoritative TG permit, dstId = %u", dstId);
     }
 
     m_permittedDstId = dstId;
 }
 
+/// <summary>
+/// Grants a TGID on a non-authoritative host.
+/// </summary>
+/// <param name="srcId"></param>
+/// <param name="dstId"></param>
+/// <param name="grp"></param>
+void Control::grantTG(uint32_t srcId, uint32_t dstId, bool grp)
+{
+    if (!m_control) {
+        return;
+    }
+
+    if (m_verbose) {
+        LogMessage(LOG_NXDN, "network TG grant demand, srcId = %u, dstId = %u", srcId, dstId);
+    }
+
+    m_trunk->writeRF_Message_Grant(srcId, dstId, 4U, grp);
+}
+
 /// <summary>
 /// Releases a granted TG.
 /// </summary>
diff --git a/src/nxdn/Control.h b/src/nxdn/Control.h
index 33f4196d..5277da3b 100644
--- a/src/nxdn/Control.h
+++ b/src/nxdn/Control.h
@@ -107,7 +107,8 @@ namespace nxdn
         void setSupervisor(bool supervisor) { m_supervisor = supervisor; }
         /// <summary>Permits a TGID on a non-authoritative host.</summary>
         void permittedTG(uint32_t dstId);
-
+        /// <summary>Grants a TGID on a non-authoritative host.</summary>
+        void grantTG(uint32_t srcId, uint32_t dstId, bool grp);
         /// <summary>Releases a granted TG.</summary>
         void releaseGrantTG(uint32_t dstId);
         /// <summary>Touchs a granted TG to keep a channel grant alive.</summary>
diff --git a/src/p25/Control.cpp b/src/p25/Control.cpp
index 5467b7c9..8aa96369 100644
--- a/src/p25/Control.cpp
+++ b/src/p25/Control.cpp
@@ -862,6 +862,25 @@ void Control::permittedTG(uint32_t dstId)
     m_permittedDstId = dstId;
 }
 
+/// <summary>
+/// Grants a TGID on a non-authoritative host.
+/// </summary>
+/// <param name="srcId"></param>
+/// <param name="dstId"></param>
+/// <param name="grp"></param>
+void Control::grantTG(uint32_t srcId, uint32_t dstId, bool grp)
+{
+    if (!m_control) {
+        return;
+    }
+
+    if (m_verbose) {
+        LogMessage(LOG_P25, "network TG grant demand, srcId = %u, dstId = %u", srcId, dstId);
+    }
+
+    m_trunk->writeRF_TSDU_Grant(srcId, dstId, 4U, grp);
+}
+
 /// <summary>
 /// Releases a granted TG.
 /// </summary>
diff --git a/src/p25/Control.h b/src/p25/Control.h
index 4c73ef68..7ce4a724 100644
--- a/src/p25/Control.h
+++ b/src/p25/Control.h
@@ -115,7 +115,8 @@ namespace p25
         void setSupervisor(bool supervisor) { m_supervisor = supervisor; }
         /// <summary>Permits a TGID on a non-authoritative host.</summary>
         void permittedTG(uint32_t dstId);
-
+        /// <summary>Grants a TGID on a non-authoritative host.</summary>
+        void grantTG(uint32_t srcId, uint32_t dstId, bool grp);
         /// <summary>Releases a granted TG.</summary>
         void releaseGrantTG(uint32_t dstId);
         /// <summary>Touchs a granted TG to keep a channel grant alive.</summary>