diff --git a/include/osmocom/msc/Makefile.am b/include/osmocom/msc/Makefile.am
index 9fa06eb..a940056 100644
--- a/include/osmocom/msc/Makefile.am
+++ b/include/osmocom/msc/Makefile.am
@@ -57,4 +57,5 @@
 	vlr_sgs.h \
 	vty.h \
 	asci_gcr.h \
+	asci_vty.h \
 	$(NULL)
diff --git a/include/osmocom/msc/asci_vty.h b/include/osmocom/msc/asci_vty.h
new file mode 100644
index 0000000..5fe11f6
--- /dev/null
+++ b/include/osmocom/msc/asci_vty.h
@@ -0,0 +1,25 @@
+/*
+ * (C) 2023 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * SPDX-License-Identifier: AGPL-3.0+
+ *
+ * Author: Andreas Eversberg
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+void asci_vty_init(struct gsm_network *msc_network);
diff --git a/include/osmocom/msc/vty.h b/include/osmocom/msc/vty.h
index 11d9ed1..a7f1db7 100644
--- a/include/osmocom/msc/vty.h
+++ b/include/osmocom/msc/vty.h
@@ -26,6 +26,10 @@
 	HLR_NODE,
 	CFG_SGS_NODE,
 	SMSC_NODE,
+	ASCI_NODE,
+	GCR_NODE,
+	VGC_NODE,
+	VBC_NODE,
 };
 
 int bsc_vty_init_extra(void);
diff --git a/src/libmsc/Makefile.am b/src/libmsc/Makefile.am
index 2e62402..dff4b2d 100644
--- a/src/libmsc/Makefile.am
+++ b/src/libmsc/Makefile.am
@@ -78,6 +78,7 @@
 	sgs_server.c \
 	sgs_vty.c \
 	asci_gcr.c \
+	asci_vty.c \
 	$(NULL)
 
 if BUILD_IU
diff --git a/src/libmsc/asci_vty.c b/src/libmsc/asci_vty.c
new file mode 100644
index 0000000..a138eda
--- /dev/null
+++ b/src/libmsc/asci_vty.c
@@ -0,0 +1,434 @@
+/* GCR interface to VTY */
+/*
+ * (C) 2023 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * SPDX-License-Identifier: AGPL-3.0+
+ *
+ * Author: Andreas Eversberg
+ *
+ * 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 <osmocom/msc/vty.h>
+#include <osmocom/msc/transaction.h>
+#include <osmocom/msc/msc_vgcs.h>
+#include <osmocom/msc/asci_vty.h>
+#include <osmocom/msc/asci_gcr.h>
+
+static struct gsm_network *gsmnet;
+
+/***********************************************************************
+ * ASCI Node
+ ***********************************************************************/
+
+#define ASCI_STR "Advanced Speech Call Items\n"
+
+static void asci_disabled(struct vty *vty)
+{
+       vty_out(vty, "%%Advanced Speech Call Items are disabled.%s", VTY_NEWLINE);
+}
+
+DEFUN(asci_call, asci_call_cmd,
+      "asci (initiate|terminate) (vgc|vbc) CALLREF",
+      ASCI_STR "Initiate a call\nTerminate a call\nVoice Group Call\nVoice Broadcast Call\nCall reference")
+{
+	struct gcr *gcr;
+	const char *error;
+
+	if (!gsmnet->asci.enable) {
+		asci_disabled(vty);
+		return CMD_WARNING;
+	}
+
+	gcr = gcr_by_group_id(gsmnet, (argv[1][1] == 'g') ? TRANS_GCC : TRANS_BCC, argv[2]);
+	if (!gcr) {
+		vty_out(vty, "%%Given call ref does not exist in GCR.%s", VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+	if (argv[0][0] == 'i')
+		error = vgcs_vty_initiate(gsmnet, gcr);
+	else
+		error = vgcs_vty_terminate(gsmnet, gcr);
+	if (error) {
+		vty_out(vty, "%%%s%s", error, VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+	return CMD_SUCCESS;
+}
+
+DEFUN(asci_show, asci_show_cmd,
+      "show asci calls",
+      SHOW_STR ASCI_STR "Show all Voice Group/Broadcast Calls")
+{
+	struct gsm_trans *trans;
+	const char *typestr;
+	struct vgcs_bss *bss;
+	struct vgcs_bss_cell *cell;
+
+	if (!gsmnet->asci.enable) {
+		asci_disabled(vty);
+		return CMD_WARNING;
+	}
+
+	llist_for_each_entry(trans, &gsmnet->trans_list, entry) {
+		if (trans->type == TRANS_GCC)
+			typestr = "Group";
+		else if (trans->type == TRANS_BCC)
+			typestr = "Broadcast";
+		else
+			continue;
+		vty_out(vty, "Call Reference %s (Voice %s Call).%s", gsm44068_group_id_string(trans->callref),
+			typestr, VTY_NEWLINE);
+		vty_out(vty, " Call state  : %s%s", vgcs_bcc_gcc_state_name(trans->gcc.fi), VTY_NEWLINE);
+		vty_out(vty, " Uplink state: %s%s", (trans->gcc.uplink_busy) ? "busy" : "free", VTY_NEWLINE);
+		if (trans->gcc.uplink_busy)
+			vty_out(vty, " Talker      : %s subscriber%s",
+				(trans->gcc.uplink_originator) ? "calling" : "other", VTY_NEWLINE);
+		llist_for_each_entry(bss, &trans->gcc.bss_list, list) {
+			vty_out(vty, " BSS %8s: listening%s%s", osmo_ss7_pointcode_print(NULL, bss->pc),
+				(trans->gcc.uplink_busy && bss == trans->gcc.uplink_bss) ? "+talking" : "",
+				VTY_NEWLINE);
+			llist_for_each_entry(cell, &bss->cell_list, list_bss) {
+				vty_out(vty, "  Cell %6d: listening%s%s", cell->cell_id,
+					(trans->gcc.uplink_busy && cell == trans->gcc.uplink_cell) ? "+talking" : "",
+					VTY_NEWLINE);
+			}
+		}
+	}
+
+	return CMD_SUCCESS;
+}
+
+/***********************************************************************
+ * GCR Config Node
+ ***********************************************************************/
+
+static struct cmd_node asci_node = {
+	ASCI_NODE,
+	"%s(config-asci)# ",
+	1,
+};
+
+static struct cmd_node gcr_node = {
+	GCR_NODE,
+	"%s(config-gcr)# ",
+	1,
+};
+
+char conf_prompt[64];
+
+static struct cmd_node vgc_node = {
+	VGC_NODE,
+	conf_prompt,
+	1,
+};
+
+static struct cmd_node vbc_node = {
+	VBC_NODE,
+	conf_prompt,
+	1,
+};
+
+DEFUN(cfg_asci, cfg_asci_cmd,
+      "asci", "Enable and configure " ASCI_STR)
+{
+	vty->node = ASCI_NODE;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_enable_disable, cfg_enable_disable_cmd,
+      "(enable|disable)", "Enable " ASCI_STR "Disable " ASCI_STR)
+{
+	gsmnet->asci.enable = (argv[0][0] == 'e');
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_gcr, cfg_gcr_cmd,
+      "gcr", "Configure Group Call Register")
+{
+	vty->node = GCR_NODE;
+	return CMD_SUCCESS;
+}
+
+static bool valid_group_id(const char *id, struct vty *vty)
+{
+	int i;
+
+	if (strlen(id) < 1 || strlen(id) > 8) {
+		vty_out(vty, "%%Given group ID is not valid. Use up to 8 numeric digits!%s", VTY_NEWLINE);
+		return false;
+	}
+	for (i = 0; i < strlen(id); i++) {
+		if (id[i] < '0' || id[i] > '9') {
+			vty_out(vty, "%%Given group ID is not valid. Use numeric digits only!%s", VTY_NEWLINE);
+			return false;
+		}
+	}
+
+	return true;
+}
+
+DEFUN(cfg_vgc, cfg_vgc_cmd,
+      "vgc ID", "Configure Voice Group Call\n" "Group ID")
+{
+	struct gcr *gcr;
+
+	if (!valid_group_id(argv[0], vty))
+		return CMD_WARNING;
+
+	gcr = gcr_by_group_id(gsmnet, TRANS_GCC, argv[0]);
+	if (!gcr)
+		gcr = gcr_create(gsmnet, TRANS_GCC, argv[0]);
+	if (!gcr)
+		return CMD_WARNING;
+
+	sprintf(conf_prompt, "%%s(vgc-%s)# ", gcr->group_id);
+	vty->node = VGC_NODE;
+	vty->index = gcr;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_no_vgc, cfg_no_vgc_cmd,
+      "no vgc ID", NO_STR "Configure Voice Group Call\n" "Group ID")
+{
+	struct gcr *gcr;
+
+	if (!valid_group_id(argv[0], vty))
+		return CMD_WARNING;
+
+	gcr = gcr_by_group_id(gsmnet, TRANS_GCC, argv[0]);
+	if (!gcr) {
+		vty_out(vty, "%%Voice group call with given group ID does not exit!%s", VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+	gcr_destroy(gcr);
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_vbc, cfg_vbc_cmd,
+      "vbc ID", "Configure Voice Broadcast Call\n" "Group ID")
+{
+	struct gcr *gcr;
+
+	if (!valid_group_id(argv[0], vty))
+		return CMD_WARNING;
+
+	gcr = gcr_by_group_id(gsmnet, TRANS_BCC, argv[0]);
+	if (!gcr)
+		gcr = gcr_create(gsmnet, TRANS_BCC, argv[0]);
+	if (!gcr)
+		return CMD_WARNING;
+
+	sprintf(conf_prompt, "%%s(vbc-%s)# ", gcr->group_id);
+	vty->node = VBC_NODE;
+	vty->index = gcr;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_no_vbc, cfg_no_vbc_cmd,
+      "no vbc ID", NO_STR "Configure Voice Broadcast Call\n" "Group ID")
+{
+	struct gcr *gcr;
+
+	if (!valid_group_id(argv[0], vty))
+		return CMD_WARNING;
+
+	gcr = gcr_by_group_id(gsmnet, TRANS_BCC, argv[0]);
+	if (!gcr) {
+		vty_out(vty, "%%Voice broadcast call with given group ID does not exit!%s", VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+	gcr_destroy(gcr);
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mute, cfg_mute_cmd,
+      "mute-talker", "Mute talker's downlink")
+{
+	struct gcr *gcr = vty->index;
+
+	gcr->mute_talker = true;
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_unmute, cfg_unmute_cmd,
+      "unmute-talker", "Unmute talker's downlink")
+{
+	struct gcr *gcr = vty->index;
+
+	gcr->mute_talker = false;
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_timeout, cfg_timeout_cmd,
+      "timeout <1-65535>", "Set inactivity timer\n" "Timeout in seconds")
+{
+	struct gcr *gcr = vty->index;
+
+	gcr->timeout = atoi(argv[0]);
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_no_timeout, cfg_no_timeout_cmd,
+      "no timeout", NO_STR "Unset inactivity timer")
+{
+	struct gcr *gcr = vty->index;
+
+	gcr->timeout = 0;
+
+	return CMD_SUCCESS;
+}
+
+#define PC_ID_STR "Point code of MSC\nCell ID of BTS"
+
+DEFUN(cfg_no_cell, cfg_no_cell_cmd,
+      "no cell POINT_CODE [<0-65535>]", NO_STR "Remove BSS/cell from current group\n" PC_ID_STR)
+{
+	struct osmo_ss7_instance *ss7 = osmo_ss7_instance_find(0);
+	struct gcr *gcr = vty->index;
+	struct gcr_bss *bss;
+	int pc = osmo_ss7_pointcode_parse(ss7, argv[0]);
+	uint16_t cell_id;
+
+	if (pc < 0 || !osmo_ss7_pc_is_valid((uint32_t)pc)) {
+		vty_out(vty, "Invalid point code (%s)%s", argv[0], VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	bss = gcr_find_bss(gcr, pc);
+	if (!bss) {
+		vty_out(vty, "%%Given BSS point code does not exit in list!%s", VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	if (argc > 1) {
+		cell_id = atoi(argv[1]);
+		if (!gcr_find_cell(bss, cell_id)) {
+			vty_out(vty, "%%Given cell does not exit in list!%s", VTY_NEWLINE);
+			return CMD_WARNING;
+		}
+
+		/* Remove cell only. Exit if there are still cells for this BSS. */
+		gcr_rm_cell(bss, cell_id);
+		if (!llist_empty(&bss->cell_list))
+			return CMD_SUCCESS;
+	}
+
+	gcr_rm_bss(gcr, pc);
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_cell, cfg_cell_cmd,
+      "cell POINT_CODE <0-65535>", "Add cell to current group\n" PC_ID_STR)
+{
+	struct osmo_ss7_instance *ss7 = osmo_ss7_instance_find(0);
+	struct gcr *gcr = vty->index;
+	struct gcr_bss *bss;
+	int pc = osmo_ss7_pointcode_parse(ss7, argv[0]);
+	uint16_t cell_id = atoi(argv[1]);
+
+	if (pc < 0 || !osmo_ss7_pc_is_valid((uint32_t)pc)) {
+		vty_out(vty, "Invalid point code (%s)%s", argv[0], VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	bss = gcr_find_bss(gcr, pc);
+	if (!bss)
+		bss = gcr_add_bss(gcr, pc);
+	if (!bss)
+		return CMD_WARNING;
+
+	if (gcr_find_cell(bss, cell_id))
+		return CMD_SUCCESS;
+
+	gcr_add_cell(bss, cell_id);
+
+	return CMD_SUCCESS;
+}
+
+static int config_write_asci(struct vty *vty)
+{
+	struct osmo_ss7_instance *ss7 = osmo_ss7_instance_find(0);
+	struct gcr *gcr;
+	struct gcr_bss *b;
+	struct gcr_cell *c;
+
+	vty_out(vty, "asci%s", VTY_NEWLINE);
+
+	vty_out(vty, " %s%s", (gsmnet->asci.enable) ? "enable" : "disable", VTY_NEWLINE);
+
+	vty_out(vty, " gcr%s", VTY_NEWLINE);
+
+	llist_for_each_entry(gcr, &gsmnet->asci.gcr_lists, list) {
+		vty_out(vty, "  %s %s%s", (gcr->trans_type == TRANS_GCC) ? "vgc" : "vbc", gcr->group_id, VTY_NEWLINE);
+		if (gcr->trans_type == TRANS_GCC) {
+			if (gcr->timeout)
+				vty_out(vty, "   timeout %d%s", gcr->timeout, VTY_NEWLINE);
+			else
+				vty_out(vty, "   no timeout%s", VTY_NEWLINE);
+		}
+		if (gcr->mute_talker)
+			vty_out(vty, "   mute-talker%s", VTY_NEWLINE);
+		else
+			vty_out(vty, "   unmute-talker%s", VTY_NEWLINE);
+		if (llist_empty(&gcr->bss_list))
+			vty_out(vty, "   ! Please add cell(s) here!%s", VTY_NEWLINE);
+		llist_for_each_entry(b, &gcr->bss_list, list) {
+			llist_for_each_entry(c, &b->cell_list, list)
+				vty_out(vty, "   cell %s %d%s", osmo_ss7_pointcode_print(ss7, b->pc), c->cell_id, VTY_NEWLINE);
+		}
+	}
+
+	return CMD_SUCCESS;
+}
+
+void asci_vty_init(struct gsm_network *msc_network)
+{
+	OSMO_ASSERT(gsmnet == NULL);
+	gsmnet = msc_network;
+
+	install_element_ve(&asci_show_cmd);
+	/* enable node */
+	install_element(ENABLE_NODE, &asci_call_cmd);
+	/* Config node */
+	install_element(CONFIG_NODE, &cfg_asci_cmd);
+	install_node(&asci_node, config_write_asci);
+	install_element(ASCI_NODE, &cfg_enable_disable_cmd);
+	install_element(ASCI_NODE, &cfg_gcr_cmd);
+	install_node(&gcr_node, NULL);
+	install_element(GCR_NODE, &cfg_vgc_cmd);
+	install_element(GCR_NODE, &cfg_no_vgc_cmd);
+	install_node(&vgc_node, NULL);
+	install_element(GCR_NODE, &cfg_vbc_cmd);
+	install_element(GCR_NODE, &cfg_no_vbc_cmd);
+	install_node(&vbc_node, NULL);
+	install_element(VGC_NODE, &cfg_mute_cmd);
+	install_element(VGC_NODE, &cfg_unmute_cmd);
+	install_element(VGC_NODE, &cfg_timeout_cmd);
+	install_element(VGC_NODE, &cfg_no_timeout_cmd);
+	install_element(VGC_NODE, &cfg_cell_cmd);
+	install_element(VGC_NODE, &cfg_no_cell_cmd);
+	/* Add all VGC_NODEs again for VBC_NODEs. */
+	install_element(VBC_NODE, &cfg_mute_cmd);
+	install_element(VBC_NODE, &cfg_unmute_cmd);
+	install_element(VBC_NODE, &cfg_cell_cmd);
+	install_element(VBC_NODE, &cfg_no_cell_cmd);
+}
diff --git a/src/libmsc/msc_vty.c b/src/libmsc/msc_vty.c
index d1b74c8..2032135 100644
--- a/src/libmsc/msc_vty.c
+++ b/src/libmsc/msc_vty.c
@@ -68,6 +68,7 @@
 #include <osmocom/msc/sccp_ran.h>
 #include <osmocom/msc/ran_peer.h>
 #include <osmocom/msc/ran_infra.h>
+#include <osmocom/msc/asci_vty.h>
 
 static struct gsm_network *gsmnet = NULL;
 
@@ -2078,6 +2079,7 @@
 #endif
 	sgs_vty_init();
 	smsc_vty_init(msc_network);
+	asci_vty_init(msc_network);
 
 	osmo_fsm_vty_add_cmds();
 
diff --git a/src/osmo-msc/msc_main.c b/src/osmo-msc/msc_main.c
index 0c25257..9808e86 100644
--- a/src/osmo-msc/msc_main.c
+++ b/src/osmo-msc/msc_main.c
@@ -330,9 +330,19 @@
 	case SMPP_NODE:
 	case MSC_NODE:
 	case MNCC_INT_NODE:
+	case ASCI_NODE:
 		vty->node = CONFIG_NODE;
 		vty->index = NULL;
 		break;
+	case GCR_NODE:
+		vty->node = ASCI_NODE;
+		vty->index = NULL;
+		break;
+	case VGC_NODE:
+	case VBC_NODE:
+		vty->node = GCR_NODE;
+		vty->index = NULL;
+		break;
 	case SUBSCR_NODE:
 		vty->node = ENABLE_NODE;
 		vty->index = NULL;
diff --git a/tests/test_nodes.vty b/tests/test_nodes.vty
index 400bc7d..b8f0310 100644
--- a/tests/test_nodes.vty
+++ b/tests/test_nodes.vty
@@ -6,6 +6,7 @@
   msc
   sgs
   smsc
+  asci
   mncc-int
   hlr
 ...
@@ -181,6 +182,9 @@
  database delete-expired 1
  validity-period minimum 1
  validity-period default 10080
+asci
+ disable
+ gcr
 end
 
 OsmoMSC# configure terminal