diff --git a/tests/e1inp_ipa_bsc_test.c b/tests/e1inp_ipa_bsc_test.c
index 9064d0a..a7317f8 100644
--- a/tests/e1inp_ipa_bsc_test.c
+++ b/tests/e1inp_ipa_bsc_test.c
@@ -30,9 +30,9 @@
 	switch(type) {
 	case E1INP_SIGN_OML:
 		LOGP(DBSCTEST, LOGL_NOTICE, "OML link up request received.\n");
-		e1inp_ts_config_sign(&line->ts[E1INP_SIGN_OML - 1], line);
+		e1inp_ts_config_sign(e1inp_line_ipa_oml_ts(line), line);
 		sign_link = oml_sign_link =
-			e1inp_sign_link_create(&line->ts[E1INP_SIGN_OML - 1],
+			e1inp_sign_link_create(e1inp_line_ipa_oml_ts(line),
 					       E1INP_SIGN_OML, NULL, 255, 0);
 		break;
 	case E1INP_SIGN_RSL:
@@ -45,10 +45,10 @@
 
 		/* We have to use the same line that the OML link. */
 		oml_line = oml_sign_link->ts->line;
-		e1inp_ts_config_sign(&oml_line->ts[E1INP_SIGN_RSL - 1],
+		e1inp_ts_config_sign(e1inp_line_ipa_rsl_ts(oml_line, 0),
 				     oml_line);
 		sign_link = rsl_sign_link =
-		     e1inp_sign_link_create(&oml_line->ts[E1INP_SIGN_RSL - 1],
+		     e1inp_sign_link_create(e1inp_line_ipa_rsl_ts(oml_line, 0),
 					    E1INP_SIGN_RSL, NULL, 0, 0);
 		break;
 	default:
diff --git a/tests/e1inp_ipa_bts_test.c b/tests/e1inp_ipa_bts_test.c
index 48a5c59..10fe0e8 100644
--- a/tests/e1inp_ipa_bts_test.c
+++ b/tests/e1inp_ipa_bts_test.c
@@ -51,9 +51,9 @@
 	case E1INP_SIGN_OML:
 		LOGP(DBTSTEST, LOGL_NOTICE, "OML link up request received.\n");
 
-		e1inp_ts_config_sign(&line->ts[E1INP_SIGN_OML - 1], line);
+		e1inp_ts_config_sign(e1inp_line_ipa_oml_ts(line), line);
 		sign_link = oml_sign_link =
-			e1inp_sign_link_create(&line->ts[E1INP_SIGN_OML - 1],
+			e1inp_sign_link_create(e1inp_line_ipa_oml_ts(line),
 						E1INP_SIGN_OML, NULL, 255, 0);
 		if (!oml_sign_link) {
 			LOGP(DBTSTEST, LOGL_ERROR,
@@ -76,10 +76,10 @@
 	case E1INP_SIGN_RSL:
 		LOGP(DBTSTEST, LOGL_NOTICE, "RSL link up request received.\n");
 
-		e1inp_ts_config_sign(&line->ts[E1INP_SIGN_RSL - 1], line);
+		e1inp_ts_config_sign(e1inp_line_ipa_rsl_ts(line, 0), line);
 
 		sign_link = rsl_sign_link =
-			e1inp_sign_link_create(&line->ts[E1INP_SIGN_RSL - 1],
+			e1inp_sign_link_create(e1inp_line_ipa_rsl_ts(line, 0),
 						E1INP_SIGN_RSL, NULL, 0, 0);
 		if (!rsl_sign_link) {
 			LOGP(DBTSTEST, LOGL_ERROR,