diff --git a/src/mod/endpoints/mod_opal/mod_opal.cpp b/src/mod/endpoints/mod_opal/mod_opal.cpp
index dd2ba1e712..b41f046488 100644
--- a/src/mod/endpoints/mod_opal/mod_opal.cpp
+++ b/src/mod/endpoints/mod_opal/mod_opal.cpp
@@ -687,12 +687,20 @@ void FSConnection::OnEstablished()
     OpalLocalConnection::OnEstablished();
 }
 
+
 PBoolean FSConnection::SendUserInputTone(char tone, unsigned duration)
 {
     switch_dtmf_t dtmf = { tone, duration };
     return switch_channel_queue_dtmf(m_fsChannel, &dtmf) == SWITCH_STATUS_SUCCESS;
 }
 
+
+PBoolean FSConnection::SendUserInputString(const PString & value)
+{
+  return OpalConnection::SendUserInputString(value);
+}
+
+
 OpalMediaFormatList FSConnection::GetMediaFormats() const
 {
     if (m_switchMediaFormats.IsEmpty()) {
diff --git a/src/mod/endpoints/mod_opal/mod_opal.h b/src/mod/endpoints/mod_opal/mod_opal.h
index 98916e95dd..8dc02ed461 100644
--- a/src/mod/endpoints/mod_opal/mod_opal.h
+++ b/src/mod/endpoints/mod_opal/mod_opal.h
@@ -192,6 +192,7 @@ class FSConnection:public OpalLocalConnection {
     virtual PBoolean OnOpenMediaStream(OpalMediaStream & stream);
     virtual OpalMediaFormatList GetMediaFormats() const;
     virtual PBoolean SendUserInputTone(char tone, unsigned duration);
+    virtual PBoolean SendUserInputString(const PString & value);
 
     void SetCodecs();