diff --git a/src/e1_config.c b/src/e1_config.c
new file mode 100644
index 0000000..cf3a94b
--- /dev/null
+++ b/src/e1_config.c
@@ -0,0 +1,57 @@
+#include <string.h>
+#include <errno.h>
+
+#include <openbsc/gsm_data.h>
+#include <openbsc/e1_input.h>
+
+#define SAPI_L2ML	0
+#define SAPI_OML	62
+#define SAPI_RSL	0	/* 63 ? */
+
+#define TEI_L2ML	127
+#define TEI_OML		25
+#define TEI_RSL		1
+
+/* do some compiled-in configuration for our BTS/E1 setup */
+int e1_config(struct gsm_bts *bts)
+{
+	struct e1inp_line *line;
+	struct e1inp_ts *sign_ts;
+	struct e1inp_sign_link *oml_link, *rsl_link;
+
+	line = malloc(sizeof(*line));
+	if (!line)
+		return -ENOMEM;
+	memset(line, 0, sizeof(*line));
+
+	/* create E1 timeslots for signalling and TRAU frames */
+	e1inp_ts_config(&line->ts[1-1], line, E1INP_TS_TYPE_SIGN);
+	e1inp_ts_config(&line->ts[2-1], line, E1INP_TS_TYPE_TRAU);
+	e1inp_ts_config(&line->ts[3-1], line, E1INP_TS_TYPE_TRAU);
+
+	/* create signalling links for TS1 */
+	sign_ts = &line->ts[1-1];
+	oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML,
+					  bts->c0, TEI_OML, SAPI_OML);
+	rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL,
+					  bts->c0, TEI_RSL, SAPI_RSL);
+
+	/* create back-links from bts/trx */
+	bts->oml_link = oml_link;
+	bts->c0->rsl_link = rsl_link;
+
+#if 0
+	/* create E1 timeslots for signalling and TRAU frames */
+	e1inp_ts_config(&line->ts[4-1], line, E1INP_TS_TYPE_TRAU);
+	e1inp_ts_config(&line->ts[5-1], line, E1INP_TS_TYPE_TRAU);
+
+	/* create signalling links for TS1 */
+	sign_ts = &line->ts[1-1];
+	rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL,
+					  &bts->trx[1], TEI_RSL+1, SAPI_RSL);
+	/* create back-links from trx */
+	bts->trx[1].rsl_link = rsl_link;
+#endif
+
+	return mi_setup(0, line, NULL);
+}