diff --git a/src/ioc/PVAServerRegister.cpp b/src/ioc/PVAServerRegister.cpp
index a7c386f..dba4b96 100644
--- a/src/ioc/PVAServerRegister.cpp
+++ b/src/ioc/PVAServerRegister.cpp
@@ -88,7 +88,7 @@ void stopPVAServer()
     }
 }
 
-void statusPVAServer()
+void pvasr(int lvl)
 {
     try {
         pvd::Lock G(the_server_lock);
@@ -96,7 +96,7 @@ void statusPVAServer()
             std::cout<<"PVA server not running\n";
             return;
         } else {
-            the_server->printInfo();
+            the_server->printInfo(lvl);
         }
     }catch(std::exception& e){
         std::cout<<"Error: "<<e.what()<<"\n";
@@ -118,8 +118,8 @@ void initStartPVAServer(initHookState state)
 void registerStartPVAServer(void)
 {
     epics::iocshRegister<const char*, &startPVAServer>("startPVAServer", "provider names");
-    epics::iocshRegister<&statusPVAServer>("statusPVAServer");
     epics::iocshRegister<&stopPVAServer>("stopPVAServer");
+    epics::iocshRegister<int, &pvasr>("pvasr", "detail");
     initHookRegister(&initStartPVAServer);
 }
 
diff --git a/src/remote/codec.cpp b/src/remote/codec.cpp
index 14208dc..9d3afda 100644
--- a/src/remote/codec.cpp
+++ b/src/remote/codec.cpp
@@ -1464,10 +1464,10 @@ BlockingServerTCPTransportCodec::getChannel(pvAccessID sid) {
 }
 
 
-int BlockingServerTCPTransportCodec::getChannelCount() {
+size_t BlockingServerTCPTransportCodec::getChannelCount() const {
 
     Lock lock(_channelsMutex);
-    return static_cast<int>(_channels.size());
+    return _channels.size();
 }
 
 
diff --git a/src/remote/pv/codec.h b/src/remote/pv/codec.h
index 42162d2..2cb0345 100644
--- a/src/remote/pv/codec.h
+++ b/src/remote/pv/codec.h
@@ -363,7 +363,7 @@ public:
     }
 
     virtual epics::pvData::int8 getRevision() const OVERRIDE FINAL {
-        return PVA_PROTOCOL_REVISION;
+        return std::min(PVA_PROTOCOL_REVISION, _remoteTransportRevision);
     }
 
 
@@ -548,7 +548,7 @@ public:
 
     virtual ServerChannel::shared_pointer getChannel(pvAccessID sid) OVERRIDE FINAL;
 
-    virtual int getChannelCount() OVERRIDE FINAL;
+    virtual size_t getChannelCount() const OVERRIDE FINAL;
 
     virtual bool verify(epics::pvData::int32 timeoutMs) OVERRIDE FINAL {
 
@@ -600,7 +600,7 @@ private:
     */
     std::map<pvAccessID, ServerChannel::shared_pointer> _channels;
 
-    epics::pvData::Mutex _channelsMutex;
+    mutable epics::pvData::Mutex _channelsMutex;
 
     epics::pvData::Status _verificationStatus;
     epics::pvData::Mutex _verificationStatusMutex;
diff --git a/src/remote/pv/remote.h b/src/remote/pv/remote.h
index 8c94213..1e3c253 100644
--- a/src/remote/pv/remote.h
+++ b/src/remote/pv/remote.h
@@ -524,7 +524,7 @@ public:
      * Get channel count.
      * @return channel count.
      */
-    virtual int getChannelCount() = 0;
+    virtual size_t getChannelCount() const = 0;
 };
 
 /**
diff --git a/src/server/pv/serverContext.h b/src/server/pv/serverContext.h
index 6f7ea1d..38af2f4 100644
--- a/src/server/pv/serverContext.h
+++ b/src/server/pv/serverContext.h
@@ -61,13 +61,14 @@ public:
     /**
      * Prints detailed information about the context to the standard output stream.
      */
-    void printInfo();
+    void printInfo(int lvl =0);
 
     /**
      * Prints detailed information about the context to the specified output stream.
+     * @param lvl detail level
      * @param str stream to which to print the info
      */
-    virtual void printInfo(std::ostream& str) = 0;
+    virtual void printInfo(std::ostream& str, int lvl=0) = 0;
 
     void dispose() EPICS_DEPRECATED;
 
diff --git a/src/server/pv/serverContextImpl.h b/src/server/pv/serverContextImpl.h
index c7addf9..168032f 100644
--- a/src/server/pv/serverContextImpl.h
+++ b/src/server/pv/serverContextImpl.h
@@ -43,7 +43,7 @@ public:
     void initialize();
     void run(epics::pvData::uint32 seconds) OVERRIDE FINAL;
     void shutdown() OVERRIDE FINAL;
-    void printInfo(std::ostream& str) OVERRIDE FINAL;
+    void printInfo(std::ostream& str, int lvl) OVERRIDE FINAL;
     void setBeaconServerStatusProvider(BeaconServerStatusProvider::shared_pointer const & beaconServerStatusProvider) OVERRIDE FINAL;
     //**************** derived from Context ****************//
     epics::pvData::Timer::shared_pointer getTimer() OVERRIDE FINAL;
diff --git a/src/server/serverContext.cpp b/src/server/serverContext.cpp
index 73fcb0e..4606f4d 100644
--- a/src/server/serverContext.cpp
+++ b/src/server/serverContext.cpp
@@ -15,6 +15,7 @@
 #include <pv/responseHandlers.h>
 #include <pv/logger.h>
 #include <pv/serverContextImpl.h>
+#include <pv/codec.h>
 #include <pv/security.h>
 
 using namespace std;
@@ -404,30 +405,57 @@ void ServerContextImpl::destroyAllTransports()
     }
 }
 
-void ServerContext::printInfo()
+void ServerContext::printInfo(int lvl)
 {
-    printInfo(cout);
+    printInfo(cout, lvl);
 }
 
-void ServerContextImpl::printInfo(ostream& str)
+void ServerContextImpl::printInfo(ostream& str, int lvl)
 {
-    Lock guard(_mutex);
-    str << "VERSION : " << getVersion().getVersionString() << endl
-        << "PROVIDER_NAMES : ";
-    for(std::vector<ChannelProvider::shared_pointer>::const_iterator it = _channelProviders.begin();
-        it != _channelProviders.end(); ++it)
-    {
-        str<<(*it)->getProviderName()<<", ";
+    if(lvl==0) {
+        Lock guard(_mutex);
+        str << "VERSION : " << getVersion().getVersionString() << endl
+            << "PROVIDER_NAMES : ";
+        for(std::vector<ChannelProvider::shared_pointer>::const_iterator it = _channelProviders.begin();
+            it != _channelProviders.end(); ++it)
+        {
+            str<<(*it)->getProviderName()<<", ";
+        }
+        str << endl
+            << "BEACON_ADDR_LIST : " << _beaconAddressList << endl
+            << "AUTO_BEACON_ADDR_LIST : " << _autoBeaconAddressList << endl
+            << "BEACON_PERIOD : " << _beaconPeriod << endl
+            << "BROADCAST_PORT : " << _broadcastPort << endl
+            << "SERVER_PORT : " << _serverPort << endl
+            << "RCV_BUFFER_SIZE : " << _receiveBufferSize << endl
+            << "IGNORE_ADDR_LIST: " << _ignoreAddressList << endl
+            << "INTF_ADDR_LIST : " << inetAddressToString(_ifaceAddr, false) << endl;
+
+    } else {
+        // lvl > 0
+
+        TransportRegistry::transportVector_t transports;
+        _transportRegistry.toArray(transports);
+
+        str<<"Clients:\n";
+        for(TransportRegistry::transportVector_t::const_iterator it(transports.begin()), end(transports.end());
+            it!=end; ++it)
+        {
+            const Transport::shared_pointer& transport(*it);
+
+            str<<"client "<<transport->getType()<<"://"<<transport->getRemoteName()
+              <<" ver="<<unsigned(transport->getRevision())
+              <<" "<<(transport->isClosed()?"closed!":"");
+
+            const detail::BlockingServerTCPTransportCodec *casTransport = dynamic_cast<const detail::BlockingServerTCPTransportCodec*>(transport.get());
+
+            if(casTransport) {
+              str<<" "<<(casTransport ? casTransport->getChannelCount() : size_t(-1))<<" channels";
+            }
+
+            str<<"\n";
+        }
     }
-    str << endl
-        << "BEACON_ADDR_LIST : " << _beaconAddressList << endl
-        << "AUTO_BEACON_ADDR_LIST : " << _autoBeaconAddressList << endl
-        << "BEACON_PERIOD : " << _beaconPeriod << endl
-        << "BROADCAST_PORT : " << _broadcastPort << endl
-        << "SERVER_PORT : " << _serverPort << endl
-        << "RCV_BUFFER_SIZE : " << _receiveBufferSize << endl
-        << "IGNORE_ADDR_LIST: " << _ignoreAddressList << endl
-        << "INTF_ADDR_LIST : " << inetAddressToString(_ifaceAddr, false) << endl;
 }
 
 void ServerContext::dispose()