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-rw-r--r--openbsc/include/openbsc/osmux.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/openbsc/include/openbsc/osmux.h b/openbsc/include/openbsc/osmux.h
index 8c01fd00b..0e727d5c4 100644
--- a/openbsc/include/openbsc/osmux.h
+++ b/openbsc/include/openbsc/osmux.h
@@ -22,6 +22,7 @@ int osmux_send_dummy(struct mgcp_endpoint *endp);
int osmux_get_cid(void);
void osmux_put_cid(uint8_t osmux_cid);
+int osmux_used_cid(void);
enum osmux_state {
OSMUX_STATE_DISABLED = 0,