diff --git a/library/Osmocom_VTY_Functions.ttcn b/library/Osmocom_VTY_Functions.ttcn
index a9f4c24..9410c9e 100644
--- a/library/Osmocom_VTY_Functions.ttcn
+++ b/library/Osmocom_VTY_Functions.ttcn
@@ -15,6 +15,7 @@
 
 	modulepar {
 		charstring mp_prompt_prefix := "OpenBSC";
+		float mp_prompt_timeout := 2.0;
 	}
 
 	const charstring VTY_VIEW_SUFFIX := "> ";
@@ -60,9 +61,9 @@
 	return charstring {
 		var charstring rx, buf := "";
 		var integer fd;
-		timer T := 2.0;
+		timer T;
 
-		T.start;
+		T.start(mp_prompt_timeout);
 		alt {
 		[] pt.receive(pattern "[\w-]+" & VTY_VIEW_SUFFIX) { };
 		[] pt.receive(pattern "[\w-]+\# ") { };