Index: channels/chan_zap.c
===================================================================
--- channels/chan_zap.c	(revision 75182)
+++ channels/chan_zap.c	(working copy)
@@ -2377,10 +2377,14 @@
 			else
 				exclusive = 1;
 		}
-		
+
+		if (p->digital) {
+			if (option_verbose > 2)
+				ast_verbose(VERBOSE_PREFIX_3 "digital call, setting user information layer 1 to %d (0x%x)\n", ast->userinformationlayer1, ast->userinformationlayer1);
+		}
 		pri_sr_set_channel(sr, p->bearer ? PVT_TO_CHANNEL(p->bearer) : PVT_TO_CHANNEL(p), exclusive, 1);
 		pri_sr_set_bearer(sr, p->digital ? PRI_TRANS_CAP_DIGITAL : ast->transfercapability, 
-					(p->digital ? -1 : 
+					(p->digital ? ast->userinformationlayer1 : 
 						((p->law == ZT_LAW_ALAW) ? PRI_LAYER_1_ALAW : PRI_LAYER_1_ULAW)));
 		if (p->pri->facilityenable)
 			pri_facility_enable(p->pri->pri);
@@ -3772,7 +3776,7 @@
 
 static void *ss_thread(void *data);
 
-static struct ast_channel *zt_new(struct zt_pvt *, int, int, int, int, int);
+static struct ast_channel *zt_new(struct zt_pvt *, int, int, int, int, int, int);
 
 static int attempt_transfer(struct zt_pvt *p)
 {
@@ -4530,7 +4534,7 @@
 							goto winkflashdone;
 						}
 						/* Make new channel */
-						chan = zt_new(p, AST_STATE_RESERVED, 0, SUB_THREEWAY, 0, 0);
+						chan = zt_new(p, AST_STATE_RESERVED, 0, SUB_THREEWAY, 0, 0, -1);
 						if (p->zaptrcallerid) {
 							if (!p->origcid_num)
 								p->origcid_num = ast_strdup(p->cid_num);
@@ -5485,7 +5489,8 @@
 	return res;
 }
 
-static struct ast_channel *zt_new(struct zt_pvt *i, int state, int startpbx, int index, int law, int transfercapability)
+static struct ast_channel *zt_new(struct zt_pvt *i, int state, int startpbx, int index, int law, 
+					int transfercapability, int userinformationlayer1)
 {
 	struct ast_channel *tmp;
 	int deflaw;
@@ -5645,6 +5650,7 @@
 	tmp->cid.cid_ton = i->cid_ton;
 #if defined(HAVE_PRI) || defined(HAVE_SS7)
 	tmp->transfercapability = transfercapability;
+	tmp->userinformationlayer1 = userinformationlayer1;
 	pbx_builtin_setvar_helper(tmp, "TRANSFERCAPABILITY", ast_transfercapability2str(transfercapability));
 	if (transfercapability & PRI_TRANS_CAP_DIGITAL)
 		i->digital = 1;
@@ -6956,7 +6962,7 @@
 				zt_enable_ec(i);
 				/* The channel is immediately up.  Start right away */
 				res = tone_zone_play_tone(i->subs[SUB_REAL].zfd, ZT_TONE_RINGTONE);
-				chan = zt_new(i, AST_STATE_RING, 1, SUB_REAL, 0, 0);
+				chan = zt_new(i, AST_STATE_RING, 1, SUB_REAL, 0, 0, -1);
 				if (!chan) {
 					ast_log(LOG_WARNING, "Unable to start PBX on channel %d\n", i->channel);
 					res = tone_zone_play_tone(i->subs[SUB_REAL].zfd, ZT_TONE_CONGESTION);
@@ -6965,7 +6971,7 @@
 				}
 			} else {
 				/* Check for callerid, digits, etc */
-				chan = zt_new(i, AST_STATE_RESERVED, 0, SUB_REAL, 0, 0);
+				chan = zt_new(i, AST_STATE_RESERVED, 0, SUB_REAL, 0, 0, -1);
 				if (chan) {
 					if (has_voicemail(i))
 						res = tone_zone_play_tone(i->subs[SUB_REAL].zfd, ZT_TONE_STUTTER);
@@ -7006,9 +7012,9 @@
 		case SIG_SF:
 				/* Check for callerid, digits, etc */
 				if (i->cid_start == CID_START_POLARITY_IN) {
-					chan = zt_new(i, AST_STATE_PRERING, 0, SUB_REAL, 0, 0);
+					chan = zt_new(i, AST_STATE_PRERING, 0, SUB_REAL, 0, 0, -1);
 				} else {
-					chan = zt_new(i, AST_STATE_RING, 0, SUB_REAL, 0, 0);
+					chan = zt_new(i, AST_STATE_RING, 0, SUB_REAL, 0, 0, -1);
 				}
 				if (chan && ast_pthread_create_detached(&threadid, NULL, ss_thread, chan)) {
 					ast_log(LOG_WARNING, "Unable to start simple switch thread on channel %d\n", i->channel);
@@ -7105,7 +7111,7 @@
 				ast_verbose(VERBOSE_PREFIX_2 "Starting post polarity "
 					    "CID detection on channel %d\n",
 					    i->channel);
-				chan = zt_new(i, AST_STATE_PRERING, 0, SUB_REAL, 0, 0);
+				chan = zt_new(i, AST_STATE_PRERING, 0, SUB_REAL, 0, 0, -1);
 				if (chan && ast_pthread_create_detached(&threadid, NULL, ss_thread, chan)) {
 					ast_log(LOG_WARNING, "Unable to start simple switch thread on channel %d\n", i->channel);
 				}
@@ -8326,7 +8332,7 @@
 				}
 			}
 			p->outgoing = 1;
-			tmp = zt_new(p, AST_STATE_RESERVED, 0, p->owner ? SUB_CALLWAIT : SUB_REAL, 0, 0);
+			tmp = zt_new(p, AST_STATE_RESERVED, 0, p->owner ? SUB_CALLWAIT : SUB_REAL, 0, 0, -1);
 #ifdef HAVE_PRI
 			if (p->bearer) {
 				/* Log owner to bearer channel, too */
@@ -9758,6 +9764,7 @@
 							law = ZT_LAW_ALAW;
 						else
 							law = ZT_LAW_MULAW;
+						ast_log(LOG_DEBUG, "user information layer 1 of incoming call = %d (0x%x)\n",e->ring.layer1, e->ring.layer1);
 						res = zt_setlaw(pri->pvts[chanpos]->subs[SUB_REAL].zfd, law);
 						if (res < 0) 
 							ast_log(LOG_WARNING, "Unable to set law on channel %d\n", pri->pvts[chanpos]->channel);
@@ -9784,11 +9791,11 @@
 							if (crv) {
 								/* Set bearer and such */
 								pri_assign_bearer(crv, pri, pri->pvts[chanpos]);
-								c = zt_new(crv, AST_STATE_RESERVED, 0, SUB_REAL, law, e->ring.ctype);
+								c = zt_new(crv, AST_STATE_RESERVED, 0, SUB_REAL, law, e->ring.ctype, e->ring.layer1);
 								pri->pvts[chanpos]->owner = &inuse;
 								ast_debug(1, "Started up crv %d:%d on bearer channel %d\n", pri->trunkgroup, crv->channel, crv->bearer->channel);
 							} else {
-								c = zt_new(pri->pvts[chanpos], AST_STATE_RESERVED, 0, SUB_REAL, law, e->ring.ctype);
+								c = zt_new(pri->pvts[chanpos], AST_STATE_RESERVED, 0, SUB_REAL, law, e->ring.ctype, e->ring.layer1);
 							}
 							if (!ast_strlen_zero(e->ring.callingsubaddr)) {
 								pbx_builtin_setvar_helper(c, "CALLINGSUBADDR", e->ring.callingsubaddr);
@@ -9828,7 +9835,7 @@
 						} else  {
 							ast_mutex_unlock(&pri->lock);
 							/* Release PRI lock while we create the channel */
-							c = zt_new(pri->pvts[chanpos], AST_STATE_RING, 1, SUB_REAL, law, e->ring.ctype);
+							c = zt_new(pri->pvts[chanpos], AST_STATE_RING, 1, SUB_REAL, law, e->ring.ctype, e->ring.layer1);
 							ast_mutex_lock(&pri->lock);
 							if (c) {
 								char calledtonstr[10];
Index: apps/app_dial.c
===================================================================
--- apps/app_dial.c	(revision 75182)
+++ apps/app_dial.c	(working copy)
@@ -1418,6 +1418,7 @@
 		tc->cid.cid_tns = chan->cid.cid_tns;
 		tc->adsicpe = chan->adsicpe;
 		tc->transfercapability = chan->transfercapability;
+		tc->userinformationlayer1 = chan->userinformationlayer1;
 
 		/* If we have an outbound group, set this peer channel to it */
 		if (outbound_group)
Index: funcs/func_channel.c
===================================================================
--- funcs/func_channel.c	(revision 75182)
+++ funcs/func_channel.c	(working copy)
@@ -89,7 +89,11 @@
 		locked_copy_string(chan, buf, chan->tech->type, len);
 	else if (!strcasecmp(data, "transfercapability"))
 		locked_copy_string(chan, buf, transfercapability_table[chan->transfercapability & 0x1f], len);
-	else if (!strcasecmp(data, "callgroup")) {
+	else if (!strcasecmp(data, "userinformationlayer1")) {
+		char ul1[10];
+		snprintf(ul1,9,"%d",chan->userinformationlayer1);
+		locked_copy_string(chan, buf, ul1, len);
+	} else if (!strcasecmp(data, "callgroup")) {
 		char groupbuf[256];
 		locked_copy_string(chan, buf,  ast_print_group(groupbuf, sizeof(groupbuf), chan->callgroup), len);
 	} else if (!chan->tech->func_channel_read
@@ -134,6 +138,8 @@
 				break;
 			}
 		}
+	} else if (!strcasecmp(data, "userinformationlayer1")) {
+		chan->userinformationlayer1 = atoi(value);
 	} else if (!chan->tech->func_channel_write
 		 || chan->tech->func_channel_write(chan, function, data, value)) {
 		ast_log(LOG_WARNING, "Unknown or unavailable item requested: '%s'\n",
@@ -159,7 +165,9 @@
 		"R/W	musicclass         class (from musiconhold.conf) for hold music\n"
 		"R/W	rxgain             set rxgain level on channel drivers that support it\n"
 		"R/O	state              state for channel\n"
+		"R/W	transfercapability ISDN transfer capability (part of ISDN transfer capability)\n"
 		"R/W	tonezone           zone for indications played\n"
+		"R/W	userinformationlayer1 ISDN User Information Layer 1 (part of ISDN transfer capability)\n"
 		"R/W	txgain             set txgain level on channel drivers that support it\n"
 		"R/O	videonativeformat  format used natively for video\n"
 		"\n"
Index: include/asterisk/channel.h
===================================================================
--- include/asterisk/channel.h	(revision 75182)
+++ include/asterisk/channel.h	(working copy)
@@ -470,6 +470,7 @@
 	ast_group_t pickupgroup;			/*!< Pickup group - which calls groups can be picked up? */
 	unsigned int flags;				/*!< channel flags of AST_FLAG_ type */
 	unsigned short transfercapability;		/*!< ISDN Transfer Capbility - AST_FLAG_DIGITAL is not enough */
+	unsigned short userinformationlayer1;		/*!< ISDN User Information Layer 1 - transfercapability is not enough */
 	AST_LIST_HEAD_NOLOCK(, ast_frame) readq;
 	int alertpipe[2];