--- func_cdr.bak	2012-05-10 11:57:26.000000000 -0400
+++ func_cdr.c	2013-05-23 01:11:03.292741727 -0400
@@ -135,8 +135,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revisi
 		</syntax>
 		<description>
 			<para>All of the CDR field names are read-only, except for <literal>accountcode</literal>,
-			<literal>userfield</literal>, and <literal>amaflags</literal>. You may, however, supply
-			a name not on the above list, and create your own variable, whose value can be changed
+			<literal>peeraccpimt</literal>, <literal>userfield</literal>, <literal>amaflags</literal>,
+			and <literal>dstchannel</literal> if it is currently empty.
+			You may, however, supply a name not on the above list, and create your own variable, whose value can be changed
 			with this function, and this variable will be stored on the cdr.</para>
 			<note><para>For setting CDR values, the <literal>l</literal> flag does not apply to
 			setting the <literal>accountcode</literal>, <literal>userfield</literal>, or
@@ -302,6 +303,8 @@ static int cdr_write(struct ast_channel 
 		ast_cdr_setuserfield(chan, value);
 	else if (!strcasecmp(args.variable, "amaflags"))
 		ast_cdr_setamaflags(chan, value);
+	else if (!strcasecmp(args.variable, "dstchannel") && ast_strlen_zero(cdr->dstchannel))
+		ast_cdr_setdestchan(cdr, value);
 	else
 		ast_cdr_setvar(cdr, args.variable, value, ast_test_flag(&flags, OPT_RECURSIVE));
 		/* No need to worry about the u flag, as all fields for which setting