diff --git a/src/layer1.c b/src/layer1.c
index 00eb470..3b45523 100644
--- a/src/layer1.c
+++ b/src/layer1.c
@@ -59,6 +59,8 @@ static int inp_sig_cb(unsigned int subsys, unsigned int signal, void __attribute
 		return 0;
 
 	/* not used by any link */
+	OSMO_ASSERT(isd);
+	OSMO_ASSERT(isd->line);
 	if (!isd->line->ops)
 		return 0;
 	v5l = container_of(isd->line->ops, struct v5x_link, e1_line_ops);
@@ -545,6 +547,11 @@ struct e1inp_line *e1_line_init(struct v5x_link *v5l, int e1_nr)
 		return NULL;
 	}
 
+	if (test_sa7) {
+		printf("Initally set Sa 7 to 0. (Link ID %d)\n", v5l->id);
+		v5x_l1_signal_snd(v5l, L1_SIGNAL_SA7_0);
+	}
+
 	return e1_line;
 }
 
diff --git a/src/main.c b/src/main.c
index 62063fa..73d5031 100644
--- a/src/main.c
+++ b/src/main.c
@@ -96,7 +96,7 @@ static void print_help()
 	printf(" -D --daemonize			Fork the process into a background daemon\n");
 	printf(" -V --version			Print the version number\n");
 	printf(" -T --gsmtap IP			Send GSMTAP messages to ip. (e.g. 224.0.0.1)\n");
-	printf(" -7 --rest-sa7			Continously toggle Sa7 when received. (Do loop interface.)\n");
+	printf(" -7 --test-sa7			Continously toggle Sa7 when received. (Do loop interface.)\n");
 	printf("    --ulaw			Use u-Law instead of a-Law for audio processing\n");
 
 	printf("\nVTY reference generation:\n");