diff --git a/doc/README.realtime b/doc/README.realtime
index 5d1d249b1a17060283ff5e8c7abac6dbbae3c694..570194d273ba10ca0dfef6ba2d55fc288fd2ec40 100755
--- a/doc/README.realtime
+++ b/doc/README.realtime
@@ -57,11 +57,14 @@ a registration, but that work is not integrated into Asterisk yet.
 ----------------------------------------------------
 The realtime switch is more than a port of functionality in v1.0 to the
 new architecture, this is a new feature of Asterisk based on the 
-ARA. The realtime switch let's your Asterisk server do database lookups
+ARA. The realtime switch lets your Asterisk server do database lookups
 of extensions in realtime from your dial plan. You can have many Asterisk
 servers sharing a dynamically updated dial plan in real time with this
 solution.
 
+Note that this switch does _NOT_ support Caller ID matching, only
+extension name/pattern matching.
+
 * So what can you do?
 ---------------------
 The realtime Architecture lets you store all of your configuration in