diff --git a/openbsc/src/input/ipaccess.c b/openbsc/src/input/ipaccess.c
index 2449e26..8722791 100644
--- a/openbsc/src/input/ipaccess.c
+++ b/openbsc/src/input/ipaccess.c
@@ -475,7 +475,9 @@
 	/* set tx delay timer for next event */
 	e1i_ts->sign.tx_timer.cb = timeout_ts1_write;
 	e1i_ts->sign.tx_timer.data = e1i_ts;
-	bsc_schedule_timer(&e1i_ts->sign.tx_timer, 0, 100);
+
+	/* Reducing this might break the nanoBTS 900 init. */
+	bsc_schedule_timer(&e1i_ts->sign.tx_timer, 0, 100000);
 
 	return ret;
 }