diff --git a/library/Osmocom_VTY_Functions.ttcn b/library/Osmocom_VTY_Functions.ttcn
index a448b8b..3dd0429 100644
--- a/library/Osmocom_VTY_Functions.ttcn
+++ b/library/Osmocom_VTY_Functions.ttcn
@@ -363,4 +363,14 @@
 	mtc.stop;
 }
 
+public function f_logp(TELNETasp_PT pt, charstring log_msg)
+{
+	// log on TTCN3 log output
+	log(log_msg);
+	// log in stderr log
+	if (pt.checkstate("Mapped")) {
+		f_vty_transceive(pt, "logp lglobal notice TTCN3 f_logp(): " & log_msg);
+	}
+}
+
 }