From 6fb4d0ee4a233807bc3fbdc28baaae8739ed026c Mon Sep 17 00:00:00 2001
From: Matthew Fredrickson <creslin@digium.com>
Date: Thu, 6 Sep 2007 15:06:42 +0000
Subject: [PATCH] TBCT now works.  It should work for NI2, 4E, and 5E.  This
 code was tested on NI2.

git-svn-id: https://origsvn.digium.com/svn/libpri/branches/1.2@460 2fbb986a-6c06-0410-b554-c9c1f0a7f128
---
 pri.c          | 26 ++++++++++++++++----------
 pri_facility.c | 16 ++--------------
 2 files changed, 18 insertions(+), 24 deletions(-)

diff --git a/pri.c b/pri.c
index 74fa44b..05dfcfb 100644
--- a/pri.c
+++ b/pri.c
@@ -521,24 +521,30 @@ int pri_channel_bridge(q931_call *call1, q931_call *call2)
 	if (!call1 || !call2)
 		return -1;
 
-	/* Check switchtype compatibility */
-	if (call1->pri->switchtype != PRI_SWITCH_LUCENT5E ||
-			call2->pri->switchtype != PRI_SWITCH_LUCENT5E)
+	/* Make sure we have compatible switchtypes */
+	if (call1->pri->switchtype != call2->pri->switchtype)
 		return -1;
 
 	/* Check for bearer capability */
 	if (call1->transcapability != call2->transcapability)
 		return -1;
-	/* Check to see if calls are on the same PRI dchannel
-	 * Currently only support calls on the same dchannel
-	 */
+
+	/* Check to see if we're on the same PRI */
 	if (call1->pri != call2->pri)
 		return -1;
 	
-	if (eect_initiate_transfer(call1->pri, call1, call2))
-		return -1;
-
-	return 0;
+	switch (call1->pri->switchtype) {
+		case PRI_SWITCH_NI2:
+		case PRI_SWITCH_LUCENT5E:
+		case PRI_SWITCH_ATT4ESS:
+			if (eect_initiate_transfer(call1->pri, call1, call2))
+				return -1;
+			else
+				return 0;
+			break;
+		default:
+			return -1;
+	}
 }
 
 int pri_hangup(struct pri *pri, q931_call *call, int cause)
diff --git a/pri_facility.c b/pri_facility.c
index dc5aedd..ae88816 100644
--- a/pri_facility.c
+++ b/pri_facility.c
@@ -859,13 +859,10 @@ extern int mwi_message_send(struct pri* pri, q931_call *call, struct pri_sr *req
 /* EECT functions */
 extern int eect_initiate_transfer(struct pri *pri, q931_call *c1, q931_call *c2)
 {
-	/* Did all the tests to see if we're on the same PRI and
-	 * are on a compatible switchtype */
-	/* TODO */
 	int i = 0;
 	int res = 0;
 	unsigned char buffer[255] = "";
-	unsigned short call_reference = c2->cr;
+	short call_reference = c2->cr ^ 0x8000;  /* Let's do the trickery to make sure the flag is correct */
 	struct rose_component *comp = NULL, *compstk[10];
 	int compsp = 0;
 	static unsigned char op_tag[] = {
@@ -878,16 +875,7 @@ extern int eect_initiate_transfer(struct pri *pri, q931_call *c1, q931_call *c2)
 		0x08,
 	};
 
-	buffer[i++] = (ASN1_CONTEXT_SPECIFIC | Q932_PROTOCOL_EXTENSIONS);
-	/* Interpretation component */
-
-	ASN1_ADD_SIMPLE(comp, COMP_TYPE_NFE, buffer, i);
-	ASN1_PUSH(compstk, compsp, comp);
-	ASN1_ADD_BYTECOMP(comp, (ASN1_CONTEXT_SPECIFIC | ASN1_TAG_0), buffer, i, 0);
-	ASN1_ADD_BYTECOMP(comp, (ASN1_CONTEXT_SPECIFIC | ASN1_TAG_2), buffer, i, 0);
-	ASN1_FIXUP(compstk, compsp, buffer, i);
-
-	ASN1_ADD_BYTECOMP(comp, COMP_TYPE_INTERPRETATION, buffer, i, 0);
+	buffer[i++] = (ASN1_CONTEXT_SPECIFIC | Q932_PROTOCOL_ROSE);
 
 	ASN1_ADD_SIMPLE(comp, COMP_TYPE_INVOKE, buffer, i);
 	ASN1_PUSH(compstk, compsp, comp);