diff --git a/cbc/ECBE_Components.ttcn b/cbc/ECBE_Components.ttcn
new file mode 100644
index 0000000..eaf2772
--- /dev/null
+++ b/cbc/ECBE_Components.ttcn
@@ -0,0 +1,104 @@
+/* ECBE (REST) interface client of osmo-cbc test suite in TTCN-3
+ * (C) 2022 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
+ * All rights reserved.
+ *
+ * Released under the terms of GNU General Public License, Version 2 or
+ * (at your option) any later version.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+module ECBE_Components {
+
+import from Osmocom_Types all;
+
+import from HTTP_Adapter all;
+import from HTTPmsg_Types all;
+import from ECBE_Types all;
+
+import from CBSP_Types all;
+
+import from CBS_Message all;
+
+private function f_cbs2ecbe_category(CBSP_Category cat_in) return EcbeCategory
+{
+	select (cat_in) {
+	case (CBSP_CATEG_HIGH_PRIO) { return high_priority; }
+	case (CBSP_CATEG_BACKGROUND) { return background; }
+	case (CBSP_CATEG_NORMAL) { return normal; }
+	case else { mtc.stop }
+	}
+}
+
+private function f_cbs2ecbe_page(CBS_MessageContent inp) return EcbePage
+{
+	return hex2str(oct2hex(inp.payload));
+}
+
+/* convert from CBS_Message to EcbeCbcMessage */
+function f_cbs2ecbe(CBS_Message inp, charstring cbe_name) return EcbeCbcMessage
+{
+	var EcbeCbcMessage ret := {
+		cbe_name := cbe_name,
+		category := f_cbs2ecbe_category(inp.category),
+		repetition_period := inp.rep_period,
+		num_of_bcast := inp.num_bcast_req,
+		scope := { scope_plmn := {} },
+		smscb_message := {
+			serial_nr := {
+				serial_nr_encoded := inp.ser_nr
+			},
+			message_id := inp.msg_id,
+			payload := {
+				payload_encoded := {
+					dcs := inp.dcs,
+					pages := { } /* appended below */
+					}
+			}
+		}
+	};
+	for (var integer i := 0; i < lengthof(inp.content); i := i+1) {
+		ret.smscb_message.payload.payload_encoded.pages :=
+			ret.smscb_message.payload.payload_encoded.pages & { f_cbs2ecbe_page(inp.content[i]) };
+	}
+	return ret;
+}
+
+/*********************************************************************************
+ * ECBE (REST) interface
+ *********************************************************************************/
+
+function f_ecbe_tx_post_cbs(EcbeCbcMessage cbc)
+runs on http_CT {
+	var charstring body := oct2char(enc_EcbeCbcMessage(cbc));
+	log("TX POST CBS: ", body);
+	var HTTPMessage http_resp;
+	f_http_tx_request(url := "/api/ecbe/v1/message", method := "POST", body := body);
+}
+
+function f_ecbe_rx_resp(template integer exp_sts := (200..299))
+runs on http_CT return HTTPResponse {
+	var HTTPMessage http_resp := f_http_rx_response(tr_HTTP_Resp(exp_sts), tout := 20.0);
+	return http_resp.response;
+}
+
+/* run a HTTP POST to add a new CBC message */
+function f_ecbe_post_cbs(EcbeCbcMessage cbc, template integer exp_sts := 201)
+runs on http_CT return HTTPResponse {
+	f_ecbe_tx_post_cbs(cbc);
+	return f_ecbe_rx_resp(exp_sts)
+}
+
+function f_ecbe_tx_delete_cbs(integer msg_id)
+runs on http_CT {
+	f_http_tx_request("/api/ecbe/v1/message/" & int2str(msg_id), method := "DELETE");
+}
+
+/* run a HTTP GET on specified URL expecting json in RSRES format as response */
+function f_ecbe_delete_cbs(integer msg_id, template integer exp_sts := 200)
+runs on http_CT return HTTPResponse {
+	f_ecbe_tx_delete_cbs(msg_id);
+	return f_ecbe_rx_resp(exp_sts);
+}
+
+}