diff --git a/src/factory/ChannelAccessFactory.cpp b/src/factory/ChannelAccessFactory.cpp
index 856cc5b..90af176 100644
--- a/src/factory/ChannelAccessFactory.cpp
+++ b/src/factory/ChannelAccessFactory.cpp
@@ -171,6 +171,7 @@ void providerRegInit(void*)
 
     registerRefCounter("ServerContextImpl", &ServerContextImpl::num_instances);
     registerRefCounter("ServerChannel", &ServerChannel::num_instances);
+    registerRefCounter("Transport (ABC)", &Transport::num_instances);
     registerRefCounter("BlockingTCPTransportCodec", &detail::BlockingTCPTransportCodec::num_instances);
     registerRefCounter("ChannelProvider (ABC)", &ChannelProvider::num_instances);
     registerRefCounter("Channel (ABC)", &Channel::num_instances);
diff --git a/src/remote/codec.cpp b/src/remote/codec.cpp
index d0fc119..3ed6b93 100644
--- a/src/remote/codec.cpp
+++ b/src/remote/codec.cpp
@@ -58,6 +58,19 @@ struct BreakTransport : TransportSender
 
 namespace epics {
 namespace pvAccess {
+
+size_t Transport::num_instances;
+
+Transport::Transport()
+{
+    REFTRACE_INCREMENT(num_instances);
+}
+
+Transport::~Transport()
+{
+    REFTRACE_DECREMENT(num_instances);
+}
+
 namespace detail {
 
 const std::size_t AbstractCodec::MAX_MESSAGE_PROCESS = 100;
@@ -994,6 +1007,7 @@ bool AbstractCodec::directDeserialize(ByteBuffer *existingBuffer, char* deserial
 {
     return false;
 }
+
 //
 //
 //  BlockingAbstractCodec
diff --git a/src/remote/pv/remote.h b/src/remote/pv/remote.h
index 26f78a4..108439c 100644
--- a/src/remote/pv/remote.h
+++ b/src/remote/pv/remote.h
@@ -157,11 +157,14 @@ class SecuritySession;
 /**
  * Interface defining transport (connection).
  */
-class Transport : public epics::pvData::DeserializableControl {
+class epicsShareClass Transport : public epics::pvData::DeserializableControl {
 public:
     POINTER_DEFINITIONS(Transport);
 
-    virtual ~Transport() {}
+    static size_t num_instances;
+
+    Transport();
+    virtual ~Transport();
 
     /**
      * Acquires transport.