diff -uNr ptlib-2.10.8.orig/src/ptclib/cli.cxx ptlib-2.10.8/src/ptclib/cli.cxx
--- ptlib-2.10.8.orig/src/ptclib/cli.cxx	2012-10-19 13:45:35.000000000 -0400
+++ ptlib-2.10.8/src/ptclib/cli.cxx	2012-10-22 16:02:58.000000000 -0400
@@ -858,6 +858,7 @@
 
 ///////////////////////////////////////////////////////////////////////////////
 
+#ifdef HAS_TELNET
 PCLITelnet::PCLITelnet(WORD port, const char * prompt, bool singleThreadForAll)
   : PCLISocket(port, prompt, singleThreadForAll)
 {
@@ -868,6 +869,7 @@
 {
   return new PTelnetSocket();
 }
+#endif
 
 
 ///////////////////////////////////////////////////////////////////////////////