--- chan_sip-old.c	2009-04-06 10:48:51.000000000 -0500
+++ chan_sip.c	2009-06-25 10:13:03.000000000 -0500
@@ -5446,6 +5446,7 @@
 	int needtext = 0;
 	char buf[SIPBUFSIZE];
 	char *decoded_exten;
+	struct timeval tv = ast_tvnow();
 
 	{
 		const char *my_name;	/* pick a good name */
@@ -5459,7 +5460,7 @@
 
 		sip_pvt_unlock(i);
 		/* Don't hold a sip pvt lock while we allocate a channel */
-		tmp = ast_channel_alloc(1, state, i->cid_num, i->cid_name, i->accountcode, i->exten, i->context, i->amaflags, "SIP/%s-%08x", my_name, (int)(long) i);
+		tmp = ast_channel_alloc(1, state, i->cid_num, i->cid_name, i->accountcode, i->exten, i->context, i->amaflags, "SIP/%s-%08x-%x.%x", my_name, (int)(long) i, tv.tv_sec, tv.tv_usec);
 
 	}
 	if (!tmp) {