Import abis_nm_{chcomb4pchan,pchan4chcomb}() from openbsc
diff --git a/include/osmocom/gsm/gsm_utils.h b/include/osmocom/gsm/gsm_utils.h
index 19adb70..a0ef3c4 100644
--- a/include/osmocom/gsm/gsm_utils.h
+++ b/include/osmocom/gsm/gsm_utils.h
@@ -114,4 +114,30 @@
 
 uint32_t gprs_tmsi2tlli(uint32_t p_tmsi, enum gprs_tlli_type type);
 
+/* Osmocom internal, not part of any gsm spec */
+enum gsm_phys_chan_config {
+	GSM_PCHAN_NONE,
+	GSM_PCHAN_CCCH,
+	GSM_PCHAN_CCCH_SDCCH4,
+	GSM_PCHAN_TCH_F,
+	GSM_PCHAN_TCH_H,
+	GSM_PCHAN_SDCCH8_SACCH8C,
+	GSM_PCHAN_PDCH,		/* GPRS PDCH */
+	GSM_PCHAN_TCH_F_PDCH,	/* TCH/F if used, PDCH otherwise */
+	GSM_PCHAN_UNKNOWN,
+	_GSM_PCHAN_MAX
+};
+
+/* Osmocom internal, not part of any gsm spec */
+enum gsm_chan_t {
+	GSM_LCHAN_NONE,
+	GSM_LCHAN_SDCCH,
+	GSM_LCHAN_TCH_F,
+	GSM_LCHAN_TCH_H,
+	GSM_LCHAN_UNKNOWN,
+	GSM_LCHAN_CCCH,
+	_GSM_LCHAN_MAX
+};
+
+
 #endif