diff --git a/openbsc/src/input/lapd.h b/openbsc/src/input/lapd.h
index 724d0cf..fd11eda 100644
--- a/openbsc/src/input/lapd.h
+++ b/openbsc/src/input/lapd.h
@@ -36,6 +36,11 @@
 					  void (*tx_cb)(uint8_t *data, int len,
 							void *cbdata), void *cbdata);
 
-int lapd_send_sabm(struct lapd_instance *li, uint8_t tei, uint8_t sapi);
+
+/* Start a (user-side) SAP for the specified TEI/SAPI on the LAPD instance */
+int lapd_sap_start(struct lapd_instance *li, uint8_t tei, uint8_t sapi);
+
+/* Stop a (user-side) SAP for the specified TEI/SAPI on the LAPD instance */
+int lapd_sap_stop(struct lapd_instance *li, uint8_t tei, uint8_t sapi);
 
 #endif /* OPENBSC_LAPD_H */