--- chan_sip.c.old	2009-02-03 12:02:35.000000000 -0500
+++ chan_sip.c	2009-02-03 11:58:47.000000000 -0500
@@ -4969,6 +4969,7 @@
 	char *l = NULL, *n = NULL;
 	int x;
 	char urioptions[256]="";
+	char *paraxipcpd = ";cpd=on";
 
 	if (ast_test_flag(p, SIP_USEREQPHONE)) {
 	 	char onlydigits = 1;
@@ -5059,8 +5060,13 @@
 	if (p->options && p->options->uri_options)
 		ast_build_string(&invite, &invite_max, ";%s", p->options->uri_options);
 
+        /* Tell ParaXip to enable CPD */
+	ast_build_string(&invite, &invite_max, "%s", paraxipcpd);
+
 	ast_copy_string(p->uri, invite_buf, sizeof(p->uri));
 
+
+
 	if (sipmethod == SIP_NOTIFY && !ast_strlen_zero(p->theirtag)) { 
 		/* If this is a NOTIFY, use the From: tag in the subscribe (RFC 3265) */
 		snprintf(to, sizeof(to), "<sip:%s>;tag=%s", p->uri, p->theirtag);
@@ -9831,6 +9837,11 @@
 			process_sdp(p, req);
 		}
 
+		/* See what ParaXip had to say */
+		char cpd_result[512];
+		ast_copy_string(cpd_result, get_header(req, "CPD-Result"), sizeof(cpd_result));
+		manager_event(EVENT_FLAG_SYSTEM, "CPD-Result", "ChannelDriver: SIP\r\nChannel: %s\r\nCallerIDName: %s\r\nUniqueid: %s\r\nResult: %s\r\n", p->owner->name, p->owner->cid.cid_name, p->owner->uniqueid, cpd_result);
+
 		/* Parse contact header for continued conversation */
 		/* When we get 200 OK, we know which device (and IP) to contact for this call */
 		/* This is important when we have a SIP proxy between us and the phone */