functions to convert lchan/pchan type into human-readable string
diff --git a/include/openbsc/gsm_data.h b/include/openbsc/gsm_data.h
index 71ad88f..02fdeaf 100644
--- a/include/openbsc/gsm_data.h
+++ b/include/openbsc/gsm_data.h
@@ -190,6 +190,10 @@
struct gsm_network *gsm_network_init(unsigned int num_bts, u_int16_t country_code,
u_int16_t network_code);
+const char *gsm_pchan_name(enum gsm_phys_chan_config c);
+const char *gsm_lchan_name(enum gsm_chan_t c);
+const char *gsm_chreq_name(enum gsm_chreq_reason_t c);
+
enum gsm_e1_event {
EVT_E1_NONE,
EVT_E1_OML_UP,