Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 215463)
+++ channels/chan_sip.c	(revision 215464)
@@ -17357,6 +17359,8 @@
 	/* Make formats okay */
 	transferer->readformat = chan2->readformat;
 	transferer->writeformat = chan2->writeformat;
+	if (!ast_strlen_zero(chan2->parkinglot))
+		ast_string_field_set(transferer, parkinglot, chan2->parkinglot);
 
 	/* Prepare for taking over the channel.  Go ahead and grab this channel
 	 * lock here to avoid a deadlock with callbacks into the channel driver