diff --git a/src/input/ipaccess.c b/src/input/ipaccess.c
index ac84ffc..fb2e30d 100644
--- a/src/input/ipaccess.c
+++ b/src/input/ipaccess.c
@@ -567,90 +567,6 @@
 	return ret;
 }
 
-#define IPA_STRING_MAX 64
-
-static struct msgb *
-ipa_bts_id_resp(struct ipaccess_unit *dev, uint8_t *data, int len, int trx_nr)
-{
-	struct msgb *nmsg;
-	char str[IPA_STRING_MAX];
-	uint8_t *tag;
-
-	memset(str, 0, sizeof(str));
-
-	nmsg = ipa_msg_alloc(0);
-	if (!nmsg)
-		return NULL;
-
-	*msgb_put(nmsg, 1) = IPAC_MSGT_ID_RESP;
-	while (len) {
-		if (len < 2) {
-			LOGP(DLINP, LOGL_NOTICE,
-				"Short read of ipaccess tag\n");
-			msgb_free(nmsg);
-			return NULL;
-		}
-		switch (data[1]) {
-		case IPAC_IDTAG_UNIT:
-			snprintf(str, sizeof(str), "%u/%u/%u",
-				dev->site_id, dev->bts_id, trx_nr);
-			break;
-		case IPAC_IDTAG_MACADDR:
-			snprintf(str, sizeof(str),
-				 "%02x:%02x:%02x:%02x:%02x:%02x",
-				 dev->mac_addr[0], dev->mac_addr[1],
-				 dev->mac_addr[2], dev->mac_addr[3],
-				 dev->mac_addr[4], dev->mac_addr[5]);
-			break;
-		case IPAC_IDTAG_LOCATION1:
-			if (dev->location1)
-				strncpy(str, dev->location1, IPA_STRING_MAX);
-			break;
-		case IPAC_IDTAG_LOCATION2:
-			if (dev->location2)
-				strncpy(str, dev->location2, IPA_STRING_MAX);
-			break;
-		case IPAC_IDTAG_EQUIPVERS:
-			if (dev->equipvers)
-				strncpy(str, dev->equipvers, IPA_STRING_MAX);
-			break;
-		case IPAC_IDTAG_SWVERSION:
-			if (dev->swversion)
-				strncpy(str, dev->swversion, IPA_STRING_MAX);
-			break;
-		case IPAC_IDTAG_UNITNAME:
-			snprintf(str, sizeof(str),
-				 "%s-%02x-%02x-%02x-%02x-%02x-%02x",
-				 dev->unit_name,
-				 dev->mac_addr[0], dev->mac_addr[1],
-				 dev->mac_addr[2], dev->mac_addr[3],
-				 dev->mac_addr[4], dev->mac_addr[5]);
-			break;
-		case IPAC_IDTAG_SERNR:
-			if (dev->serno)
-				strncpy(str, dev->serno, IPA_STRING_MAX);
-			break;
-		default:
-			LOGP(DLINP, LOGL_NOTICE,
-				"Unknown ipaccess tag 0x%02x\n", *data);
-			msgb_free(nmsg);
-			return NULL;
-		}
-		str[IPA_STRING_MAX-1] = '\0';
-
-		LOGP(DLINP, LOGL_INFO, " tag %d: %s\n", data[1], str);
-		tag = msgb_put(nmsg, 3 + strlen(str) + 1);
-		tag[0] = 0x00;
-		tag[1] = 1 + strlen(str) + 1;
-		tag[2] = data[1];
-		memcpy(tag + 3, str, strlen(str) + 1);
-		data += 2;
-		len -= 2;
-	}
-	ipa_msg_push_header(nmsg, IPAC_PROTO_IPACCESS);
-	return nmsg;
-}
-
 static struct msgb *ipa_bts_id_ack(void)
 {
 	struct msgb *nmsg2;
@@ -698,13 +614,16 @@
 		if (msg_type == IPAC_MSGT_ID_GET) {
 			uint8_t *data = msgb_l2(msg);
 			int len = msgb_l2len(msg);
+			int old_trx_nr = dev->trx_id;
 			int trx_nr = 0;
 
 			if (link->ofd->priv_nr >= E1INP_SIGN_RSL)
 				trx_nr = link->ofd->priv_nr - E1INP_SIGN_RSL;
 
 			LOGP(DLINP, LOGL_NOTICE, "received ID get\n");
-			rmsg = ipa_bts_id_resp(dev, data + 1, len - 1, trx_nr);
+			dev->trx_id = trx_nr;
+			rmsg = ipa_ccm_make_id_resp_from_req(dev, data + 1, len - 1);
+			dev->trx_id = old_trx_nr;
 			ret = ipa_send(link->ofd->fd, rmsg->data, rmsg->len);
 			if (ret != rmsg->len) {
 				LOGP(DLINP, LOGL_ERROR, "cannot send ID_RESP "