Index: channels/chan_sip.c
===================================================================
RCS file: /usr/cvsroot/asterisk/channels/chan_sip.c,v
retrieving revision 1.744
diff -u -r1.744 chan_sip.c
--- channels/chan_sip.c 29 May 2005 23:08:12 -0000      1.744
+++ channels/chan_sip.c 30 May 2005 00:27:52 -0000
@@ -170,6 +170,7 @@
        { "To", "t" },
        { "Supported", "k" },
        { "Refer-To", "r" },
+       { "Referred-By", "b" },
        { "Allow-Events", "u" },
        { "Event", "o" },
        { "Via", "v" },