diff --git a/include/openbsc/gsm_04_08.h b/include/openbsc/gsm_04_08.h
index 5fa92fa..edff769 100644
--- a/include/openbsc/gsm_04_08.h
+++ b/include/openbsc/gsm_04_08.h
@@ -480,6 +480,7 @@
 
 struct msgb;
 struct gsm_bts;
+struct gsm_subscriber;
 
 /* config options controlling the behaviour of the lower leves */
 void gsm0408_allow_everyone(int allow);
@@ -488,7 +489,7 @@
 int gsm0408_rcvmsg(struct msgb *msg);
 void gsm0408_generate_lai(struct gsm48_loc_area_id *lai48, u_int16_t mcc, 
 		u_int16_t mnc, u_int16_t lac);
-int gsm48_cc_tx_setup(struct gsm_lchan *lchan);
+int gsm48_cc_tx_setup(struct gsm_lchan *lchan, struct gsm_subscriber *calling);
 enum gsm_chan_t get_ctype_by_chreq(struct gsm_bts *bts, u_int8_t ra);
 enum gsm_chreq_reason_t get_reason_by_chreq(struct gsm_bts *bts, u_int8_t ra);
 
@@ -499,4 +500,9 @@
 
 int gsm48_send_rr_release(struct gsm_lchan *lchan);
 
+/* convert a ASCII phone number to call-control BCD */
+int encode_bcd_number(u_int8_t *bcd_lv, u_int8_t max_len,
+		      u_int8_t type, const char *input);
+u_int8_t decode_bcd_number(char *output, int output_len, const u_int8_t *bcd_lv);
+
 #endif