diff --git a/packet-atm.c b/packet-atm.c
index a037ffd47d..36329559cd 100644
--- a/packet-atm.c
+++ b/packet-atm.c
@@ -1,7 +1,7 @@
 /* packet-atm.c
  * Routines for ATM packet disassembly
  *
- * $Id: packet-atm.c,v 1.52 2003/01/08 23:07:44 guy Exp $
+ * $Id: packet-atm.c,v 1.53 2003/01/09 01:55:11 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@ethereal.com>
@@ -1139,20 +1139,20 @@ dissect_atm_common(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
   switch (pinfo->pseudo_header->atm.channel) {
 
   case 0:
-    /* Traffic from DCE to DTE. */
-    if (check_col(pinfo->cinfo, COL_RES_DL_DST))
-      col_set_str(pinfo->cinfo, COL_RES_DL_DST, "DTE");
-    if (check_col(pinfo->cinfo, COL_RES_DL_SRC))
-      col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "DCE");
-    break;
-
-  case 1:
     /* Traffic from DTE to DCE. */
     if (check_col(pinfo->cinfo, COL_RES_DL_DST))
       col_set_str(pinfo->cinfo, COL_RES_DL_DST, "DCE");
     if (check_col(pinfo->cinfo, COL_RES_DL_SRC))
       col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "DTE");
     break;
+
+  case 1:
+    /* Traffic from DCE to DTE. */
+    if (check_col(pinfo->cinfo, COL_RES_DL_DST))
+      col_set_str(pinfo->cinfo, COL_RES_DL_DST, "DTE");
+    if (check_col(pinfo->cinfo, COL_RES_DL_SRC))
+      col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "DCE");
+    break;
   }
 
   if (check_col(pinfo->cinfo, COL_INFO)) {
@@ -1174,13 +1174,13 @@ dissect_atm_common(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
     switch (pinfo->pseudo_header->atm.channel) {
 
     case 0:
-      /* Traffic from DCE to DTE. */
-      proto_tree_add_text(atm_tree, tvb, 0, 0, "Channel: DCE->DTE");
+      /* Traffic from DTE to DCE. */
+      proto_tree_add_text(atm_tree, tvb, 0, 0, "Channel: DTE->DCE");
       break;
 
     case 1:
-      /* Traffic from DTE to DCE. */
-      proto_tree_add_text(atm_tree, tvb, 0, 0, "Channel: DTE->DCE");
+      /* Traffic from DCE to DTE. */
+      proto_tree_add_text(atm_tree, tvb, 0, 0, "Channel: DCE->DTE");
       break;
 
     default:
diff --git a/wiretap/libpcap.c b/wiretap/libpcap.c
index 086550a930..59054904fc 100644
--- a/wiretap/libpcap.c
+++ b/wiretap/libpcap.c
@@ -1,6 +1,6 @@
 /* libpcap.c
  *
- * $Id: libpcap.c,v 1.88 2003/01/08 05:03:54 guy Exp $
+ * $Id: libpcap.c,v 1.89 2003/01/09 01:55:12 guy Exp $
  *
  * Wiretap Library
  * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
@@ -1158,7 +1158,7 @@ libpcap_get_atm_pseudoheader(const struct sunatm_hdr *atm_phdr,
 
 	pseudo_header->atm.vpi = vpi;
 	pseudo_header->atm.vci = vci;
-	pseudo_header->atm.channel = (atm_phdr->flags & 0x80) ? 1 : 0;
+	pseudo_header->atm.channel = (atm_phdr->flags & 0x80) ? 0 : 1;
 
 	/* We don't have this information */
 	pseudo_header->atm.cells = 0;
@@ -1476,7 +1476,7 @@ static gboolean libpcap_dump(wtap_dumper *wdh,
 		 * Write the ATM header.
 		 */
 		atm_hdr.flags =
-		    (pseudo_header->atm.channel != 0) ? 0x80 : 0x00;
+		    (pseudo_header->atm.channel == 0) ? 0x80 : 0x00;
 		switch (pseudo_header->atm.aal) {
 
 		case AAL_SIGNALLING:
diff --git a/wiretap/netxray.c b/wiretap/netxray.c
index b00d9468cb..3ee0267dc8 100644
--- a/wiretap/netxray.c
+++ b/wiretap/netxray.c
@@ -1,6 +1,6 @@
 /* netxray.c
  *
- * $Id: netxray.c,v 1.72 2003/01/07 07:16:24 guy Exp $
+ * $Id: netxray.c,v 1.73 2003/01/09 01:55:12 guy Exp $
  *
  * Wiretap Library
  * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
@@ -648,7 +648,7 @@ netxray_set_pseudo_header(wtap *wth, const guint8 *pd, int len,
 			pseudo_header->atm.vpi = hdr->hdr_2_x.xxx[11];
 			pseudo_header->atm.vci = pletohs(&hdr->hdr_2_x.xxx[12]);
 			pseudo_header->atm.channel =
-			    (hdr->hdr_2_x.xxx[15] & 0x10)? 0 : 1;
+			    (hdr->hdr_2_x.xxx[15] & 0x10)? 1 : 0;
 			pseudo_header->atm.cells = 0;
 
 			switch (hdr->hdr_2_x.xxx[0] & 0xF0) {
diff --git a/wiretap/snoop.c b/wiretap/snoop.c
index 709ab99355..cac30feba5 100644
--- a/wiretap/snoop.c
+++ b/wiretap/snoop.c
@@ -1,6 +1,6 @@
 /* snoop.c
  *
- * $Id: snoop.c,v 1.59 2003/01/03 06:45:45 guy Exp $
+ * $Id: snoop.c,v 1.60 2003/01/09 01:55:12 guy Exp $
  *
  * Wiretap Library
  * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
@@ -586,7 +586,7 @@ snoop_read_atm_pseudoheader(FILE_T fh, union wtap_pseudo_header *pseudo_header,
 
 	pseudo_header->atm.vpi = vpi;
 	pseudo_header->atm.vci = vci;
-	pseudo_header->atm.channel = (atm_phdr.flags & 0x80) ? 1 : 0;
+	pseudo_header->atm.channel = (atm_phdr.flags & 0x80) ? 0 : 1;
 
 	/* We don't have this information */
 	pseudo_header->atm.cells = 0;
@@ -729,7 +729,7 @@ static gboolean snoop_dump(wtap_dumper *wdh,
 		 * Write the ATM header.
 		 */
 		atm_hdr.flags =
-		    (pseudo_header->atm.channel != 0) ? 0x80 : 0x00;
+		    (pseudo_header->atm.channel == 0) ? 0x80 : 0x00;
 		switch (pseudo_header->atm.aal) {
 
 		case AAL_SIGNALLING:
diff --git a/wiretap/wtap.h b/wiretap/wtap.h
index 5c1a1c0ec6..8aea9d0e68 100644
--- a/wiretap/wtap.h
+++ b/wiretap/wtap.h
@@ -1,6 +1,6 @@
 /* wtap.h
  *
- * $Id: wtap.h,v 1.130 2003/01/08 05:03:54 guy Exp $
+ * $Id: wtap.h,v 1.131 2003/01/09 01:55:13 guy Exp $
  *
  * Wiretap Library
  * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
@@ -274,7 +274,7 @@ struct atm_phdr {
 	guint8	subtype;	/* traffic subtype */
 	guint16	vpi;		/* virtual path identifier */
 	guint16	vci;		/* virtual circuit identifier */
-	guint16	channel;	/* link: 0 for DCE, 1 for DTE */
+	guint16	channel;	/* link: 0 for DTE->DCE, 1 for DCE->DTE */
 	guint16	cells;		/* number of cells */
 	guint16	aal5t_u2u;	/* user-to-user indicator */
 	guint16	aal5t_len;	/* length of the packet */