diff --git a/include/osmocom/abis/e1_input.h b/include/osmocom/abis/e1_input.h
index 42b1758..b304254 100644
--- a/include/osmocom/abis/e1_input.h
+++ b/include/osmocom/abis/e1_input.h
@@ -157,10 +157,12 @@
 
 	unsigned int num;
 	const char *name;
+	unsigned int port_nr;
 	struct rate_ctr_group *rate_ctr;
 
 	/* array of timestlots */
 	struct e1inp_ts ts[NUM_E1_TS];
+	unsigned int num_ts;
 
 	const struct e1inp_line_ops *ops;