diff --git a/openbsc/src/libbsc/bts_hsl_femtocell.c b/openbsc/src/libbsc/bts_hsl_femtocell.c
new file mode 100644
index 0000000..2813195
--- /dev/null
+++ b/openbsc/src/libbsc/bts_hsl_femtocell.c
@@ -0,0 +1,146 @@
+/* OpenBSC support code for HSL Femtocell */
+
+/* (C) 2011 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2011 by OnWaves
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <sys/types.h>
+
+#include <arpa/inet.h>
+
+#include <osmocore/tlv.h>
+#include <openbsc/gsm_data.h>
+#include <openbsc/abis_nm.h>
+#include <openbsc/abis_rsl.h>
+#include <openbsc/signal.h>
+#include <openbsc/e1_input.h>
+
+static struct gsm_bts_model model_hslfemto = {
+	.type = GSM_BTS_TYPE_HSL_FEMTO,
+	.nm_att_tlvdef = {
+		.def = {
+			/* no HSL specific OML attributes that we know of */
+		},
+	},
+};
+
+
+static const uint8_t l1_msg[] = {
+	0x80, 0x8a,
+		0xC4, 0x0b,
+};
+
+static const uint8_t conn_trau_msg[] = {
+	0x80, 0x81,
+		0xC1, 16,
+			0x02, 0x00, 0x00, 0x00, 0xC0, 0xA8, 0xEA, 0x01,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static const uint8_t conn_trau_msg2[] = {
+	0x80, 0x81,
+		0xC1, 16,
+			0x02, 0x00, 0xd4, 0x07, 0xC0, 0xA8, 0xEA, 0x01,
+			0x38, 0xA4, 0x45, 0x00, 0x04, 0x59, 0x40, 0x00
+};
+
+static uint8_t oml_arfcn_bsic[] = {
+	0x81, 0x80, 0x00, 10,
+		NM_MT_SET_BTS_ATTR, NM_OC_BTS, 0xff, 0xff, 0xff,
+			NM_ATT_BCCH_ARFCN, 0x03, 0x67,
+			NM_ATT_BSIC, 0x00
+};
+
+static inline struct msgb *hsl_alloc_msgb(void)
+{
+	return msgb_alloc_headroom(1024, 127, "HSL");
+}
+
+static int hslfemto_bootstrap_om(struct gsm_bts *bts)
+{
+	struct msgb *msg;
+	uint8_t *cur;
+
+	msg = hsl_alloc_msgb();
+	cur = msgb_put(msg, sizeof(l1_msg));
+	memcpy(msg->data, l1_msg, sizeof(l1_msg));
+	msg->trx = bts->c0;
+	abis_rsl_sendmsg(msg);
+
+#if 1
+	msg = hsl_alloc_msgb();
+	cur = msgb_put(msg, sizeof(conn_trau_msg));
+	memcpy(msg->data, conn_trau_msg, sizeof(conn_trau_msg));
+	msg->trx = bts->c0;
+	abis_rsl_sendmsg(msg);
+#endif
+	msg = hsl_alloc_msgb();
+	cur = msgb_put(msg, sizeof(conn_trau_msg2));
+	memcpy(msg->data, conn_trau_msg2, sizeof(conn_trau_msg2));
+	msg->trx = bts->c0;
+	abis_rsl_sendmsg(msg);
+
+	*((uint16_t *)oml_arfcn_bsic+10) = htons(bts->c0->arfcn);
+	oml_arfcn_bsic[13] = bts->bsic;
+
+	msg = hsl_alloc_msgb();
+	cur = msgb_put(msg, sizeof(oml_arfcn_bsic));
+	memcpy(msg->data, oml_arfcn_bsic, sizeof(oml_arfcn_bsic));
+	msg->trx = bts->c0;
+	_abis_nm_sendmsg(msg, 0);
+
+	/* Delay the OPSTART until after SI have been set via RSL */
+	//abis_nm_opstart(bts, NM_OC_BTS, 255, 255, 255);
+
+	return 0;
+}
+
+/* Callback function to be called every time we receive a signal from INPUT */
+static int inp_sig_cb(unsigned int subsys, unsigned int signal,
+		      void *handler_data, void *signal_data)
+{
+	struct input_signal_data *isd = signal_data;
+
+	if (subsys != SS_INPUT)
+		return 0;
+
+	switch (signal) {
+	case S_INP_TEI_UP:
+		switch (isd->link_type) {
+		case E1INP_SIGN_OML:
+			hslfemto_bootstrap_om(isd->trx->bts);
+			break;
+		}
+	}
+
+	return 0;
+}
+
+int bts_model_hslfemto_init(void)
+{
+	model_hslfemto.features.data = &model_hslfemto._features_data[0];
+	model_hslfemto.features.data_len = sizeof(model_hslfemto._features_data);
+
+	gsm_btsmodel_set_feature(&model_hslfemto, BTS_FEAT_GPRS);
+	gsm_btsmodel_set_feature(&model_hslfemto, BTS_FEAT_EGPRS);
+
+	register_signal_handler(SS_INPUT, inp_sig_cb, NULL);
+
+	return gsm_bts_model_register(&model_hslfemto);
+}