Index: main/pbx.c
===================================================================
--- main/pbx.c	(revision 119891)
+++ main/pbx.c	(working copy)
@@ -660,7 +660,7 @@
 		;	/* ignore some characters */
 
 	/* always return unless we have a set of chars */
-	switch (c) {
+	switch (toupper(c)) {
 	default:	/* ordinary character */
 		return 0x0000 | (c & 0xff);