diff --git a/src/dmr/packet/ControlSignaling.cpp b/src/dmr/packet/ControlSignaling.cpp
index 64b64ab7..56cfcbe8 100644
--- a/src/dmr/packet/ControlSignaling.cpp
+++ b/src/dmr/packet/ControlSignaling.cpp
@@ -443,6 +443,43 @@ void ControlSignaling::processNetwork(const data::Data & dmrData)
                     LogMessage(LOG_NET, "DMR Slot %u, DT_CSBK, CSBKO_RAND (Random Access), serviceKind = $%02X, serviceOptions = $%02X, serviceExtra = $%02X, srcId = %u, dstId = %u",
                         m_slot->m_slotNo, isp->getServiceKind(), isp->getServiceOptions(), isp->getServiceExtra(), isp->getSrcId(), isp->getDstId());
                 }
+
+                switch (isp->getServiceKind()) {
+                case SVC_KIND_IND_VOICE_CALL:
+                    writeRF_CSBK_ACK_RSP(srcId, TS_WAIT_RSN, 1U);
+
+                    if (m_slot->m_authoritative) {
+                        writeRF_CSBK_Grant(srcId, dstId, isp->getServiceOptions(), false);
+                    }
+                    break;
+                case SVC_KIND_GRP_VOICE_CALL:
+                    writeRF_CSBK_ACK_RSP(srcId, TS_WAIT_RSN, 1U);
+
+                    if (m_slot->m_authoritative) {
+                        writeRF_CSBK_Grant(srcId, dstId, isp->getServiceOptions(), true);
+                    }
+                    break;
+                case SVC_KIND_IND_DATA_CALL:
+                case SVC_KIND_IND_UDT_DATA_CALL:
+                    writeRF_CSBK_ACK_RSP(srcId, TS_WAIT_RSN, 0U);
+
+                    writeRF_CSBK_Data_Grant(srcId, dstId, isp->getServiceOptions(), false);
+                    break;
+                case SVC_KIND_GRP_DATA_CALL:
+                case SVC_KIND_GRP_UDT_DATA_CALL:
+                    writeRF_CSBK_ACK_RSP(srcId, TS_WAIT_RSN, 0U);
+
+                    writeRF_CSBK_Data_Grant(srcId, dstId, isp->getServiceOptions(), true);
+                    break;
+                case SVC_KIND_REG_SVC:
+                    break;
+                default:
+                    LogWarning(LOG_RF, "DMR Slot %u, DT_CSBK, CSBKO_RAND (Random Access), unhandled service, serviceKind = %02X", m_slot->m_slotNo, isp->getServiceKind());
+                    // should we drop the CSBK and not repeat it?
+                    break;
+                }
+
+                handled = true;
             }
         }
         break;
diff --git a/src/nxdn/packet/Trunk.cpp b/src/nxdn/packet/Trunk.cpp
index 46573347..bce765b3 100644
--- a/src/nxdn/packet/Trunk.cpp
+++ b/src/nxdn/packet/Trunk.cpp
@@ -43,6 +43,7 @@
 
 using namespace nxdn;
 using namespace nxdn::lc;
+using namespace nxdn::lc::rcch;
 using namespace nxdn::packet;
 
 #include <cassert>
@@ -235,10 +236,50 @@ bool Trunk::processNetwork(uint8_t fct, uint8_t option, lc::RTCH& netLC, uint8_t
 {
     assert(data != nullptr);
 
+    if (!m_nxdn->m_control)
+        return false;
+    if (m_nxdn->m_rfState != RS_RF_LISTENING && m_nxdn->m_netState == RS_NET_IDLE)
+        return false;
+
     if (m_nxdn->m_netState == RS_NET_IDLE) {
         m_nxdn->m_queue.clear();
     }
 
+    if (m_nxdn->m_netState == RS_NET_IDLE) {
+        std::unique_ptr<lc::RCCH> rcch = RCCHFactory::createRCCH(data, len);
+        if (rcch == nullptr) {
+            return false;
+        }
+
+        uint16_t srcId = rcch->getSrcId();
+        uint16_t dstId = rcch->getDstId();
+
+        // handle standard P25 reference opcodes
+        switch (rcch->getMessageType()) {
+            case RTCH_MESSAGE_TYPE_VCALL:
+            {
+                if (m_verbose) {
+                    LogMessage(LOG_NET, NXDN_RCCH_MSG_TYPE_VCALL_CONN_REQ ", emerg = %u, encrypt = %u, prio = %u, chNo = %u, srcId = %u, dstId = %u",
+                        rcch->getEmergency(), rcch->getEncrypted(), rcch->getPriority(), rcch->getGrpVchNo(), srcId, dstId);
+                }
+
+                uint8_t serviceOptions = (rcch->getEmergency() ? 0x80U : 0x00U) +   // Emergency Flag
+                    (rcch->getEncrypted() ? 0x40U : 0x00U) +                        // Encrypted Flag
+                    (rcch->getPriority() & 0x07U);                                  // Priority
+
+                if (m_nxdn->m_dedicatedControl && !m_nxdn->m_voiceOnControl) {
+                    writeRF_Message_Grant(srcId, dstId, serviceOptions, true);
+                }
+            }
+            return true; // don't allow this to write to the air
+            default:
+                LogError(LOG_NET, "NXDN, unhandled message type, messageType = $%02X", rcch->getMessageType());
+                return false;
+        } // switch (rcch->getMessageType())
+
+        writeRF_Message(rcch.get(), true);
+    }
+
     return true;
 }
 
diff --git a/src/p25/packet/Trunk.cpp b/src/p25/packet/Trunk.cpp
index 7cbabf10..a62890e0 100644
--- a/src/p25/packet/Trunk.cpp
+++ b/src/p25/packet/Trunk.cpp
@@ -710,8 +710,7 @@ bool Trunk::processNetwork(uint8_t* data, uint32_t len, lc::LC& control, data::L
                             (tsbk->getEncrypted() ? 0x40U : 0x00U) +                        // Encrypted Flag
                             (tsbk->getPriority() & 0x07U);                                  // Priority
 
-                        // workaround for single channel dedicated sites to pass network traffic on a lone VC
-                        if (m_p25->m_dedicatedControl && !m_p25->m_voiceOnControl && m_p25->m_affiliations.getRFChCnt() == 1U) {
+                        if (m_p25->m_dedicatedControl && !m_p25->m_voiceOnControl) {
                             writeRF_TSDU_Grant(srcId, dstId, serviceOptions, true);
                         }
                     }
@@ -727,8 +726,7 @@ bool Trunk::processNetwork(uint8_t* data, uint32_t len, lc::LC& control, data::L
                             (tsbk->getEncrypted() ? 0x40U : 0x00U) +                        // Encrypted Flag
                             (tsbk->getPriority() & 0x07U);                                  // Priority
 
-                        // workaround for single channel dedicated sites to pass network traffic on a lone VC
-                        if (m_p25->m_dedicatedControl && !m_p25->m_voiceOnControl && m_p25->m_affiliations.getRFChCnt() == 1U) {
+                        if (m_p25->m_dedicatedControl && !m_p25->m_voiceOnControl) {
                             writeRF_TSDU_Grant(srcId, dstId, serviceOptions, false);
                         }
                     }