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-rw-r--r--src/osmo-bts-sysmo/tch.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/osmo-bts-sysmo/tch.c b/src/osmo-bts-sysmo/tch.c
index fa21eb53..e08d8a66 100644
--- a/src/osmo-bts-sysmo/tch.c
+++ b/src/osmo-bts-sysmo/tch.c
@@ -567,6 +567,7 @@ int l1if_tch_rx(struct gsm_bts_trx *trx, uint8_t chan_nr, struct msgb *l1p_msg)
l1sap = msgb_l1sap_prim(rmsg);
osmo_prim_init(&l1sap->oph, SAP_GSM_PH, PRIM_TCH, PRIM_OP_INDICATION, rmsg);
l1sap->u.tch.chan_nr = chan_nr;
+ l1sap->u.tch.fn = data_ind->u32Fn;
return l1sap_up(trx, l1sap);
}