diff --git a/openbsc/src/libbsc/e1_config.c b/openbsc/src/libbsc/e1_config.c
index cda1318..d3dff48 100644
--- a/openbsc/src/libbsc/e1_config.c
+++ b/openbsc/src/libbsc/e1_config.c
@@ -185,6 +185,7 @@
 
 	/* skip signal link initialization, this is done later for these BTS. */
 	if (bts->type == GSM_BTS_TYPE_NANOBTS ||
+	    bts->type == GSM_BTS_TYPE_OSMO_SYSMO ||
 	    bts->type == GSM_BTS_TYPE_HSL_FEMTO)
 		return e1inp_line_update(line);